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Chevrolet Stovebolt engine

The Chevrolet Stovebolt engine is a straight-six engine made in two versions between 1929 and 1962 by the Chevrolet Division of General Motors. It replaced the company's 171-cubic-inch (2.8 L) inline-four as their sole engine offering from 1929 through 1954, and was the company's base engine starting in 1955 when it added the small block V8 to the lineup. It was completely phased out in North America by 1962, but GM continued to build it in Brazil until 1979. It was replaced by the Chevrolet Turbo-Thrift engine.

Chevrolet Stovebolt engine
Overview
ManufacturerGeneral Motors Corporation
Also calledStovebolt Six
Cast-Iron Wonder
Production1929–1962 North America
1964–1979 Brazil
Layout
ValvetrainOHV, 2 valves per cylinder
Combustion
Fuel typeGasoline
Cooling systemWater-cooled
Chronology
Predecessor171 Straight-4
SuccessorChevrolet Turbo-Thrift engine

First generation: 1929–1936

First Generation
 
Overview
Production1929–1936
Layout
Displacement194 cu in (3.2 L)
181 cu in (3.0 L)
207 cu in (3.4 L)
Cylinder bore3+516 in (84 mm)
Piston stroke3+12 in (88.9 mm)
3+34 in (95.25 mm)
4 in (101.6 mm)
ValvetrainOHV, 2 valves per cylinder
Combustion
Oil system"splash" lubrication for the rod bearings and pressurized lubrication to the three main bearings.
Cooling systemWater-cooled
Output
Power output50 hp (37 kW) 1929–1931 194
60 hp (45 kW) 1932–1933 194
80 hp (60 kW) 1934–1936 194
Chronology
Predecessor171 Straight-4

"A six for the price of a four"

The new six-cylinder engine was introduced in 1929 Chevrolet cars and trucks, replacing the company's first inline-4. The 1927 Chevrolet Series AA Capitol had sold very well—over a million units sold as compared to about 400,000 of Ford's Model T—but Ford had introduced a new model in the autumn of 1927: the Model A. The Model A, with its improved 40 hp (30 kW) four-cylinder, compared much more favourably to the 27 hp (20 kW) Series AA Capitol, and sales of the Model A surpassed Chevrolet by 1929.[1]: 14  Chevrolet had been considering switching to a six-cylinder engine since 1925, and the ascendency of the Model A precipitated the switch. Chevrolet had long been known for its "valve-in-head" design in the previous four-cylinder engine, so General Manager William S. Knudsen and marketing executive Richard Grant insisted that the new six-cylinder design also use overhead valves. The new engine was mockingly called the "Cast-Iron Wonder" and "Stovebolt Six" for its seemingly old-fashioned design,[1]: 12–14  but it was famously advertised as "a six for the price of a four" to great success: the Chevrolet was priced only $100 more than the Model A, and the brand regained the sales lead from Ford in 1931.[1]: 12–14 

194

When introduced in 1929 the six-cylinder was 193.9 cubic inches (3.2 L) in size and produced 46 hp (34 kW). This engine used a forged steel crankshaft with three main bearings and cast-iron pistons. Bore and stroke was 3+516 in × 3+34 in (84 mm × 95 mm).

A balanced crankshaft was introduced for 1932, while a higher (5.2:1) compression ratio upped output to 60 hp (45 kW).

This engine was used in all Chevrolet passenger cars from 1929 through 1932.

Applications:

207

 
1933 Chevrolet L6 engine

The original 194 CID engine was replaced with an improved 206.8-cubic-inch (3.4 L) variant (the stroke was increased to 4 inches (101.6 mm)) in 1933, introduced in the Series CA Eagle. This newly revised engine put out 65 hp (48 kW), and was produced until 1936.

Toyota's first engine, the Type A produced from 1935 to 1947, was a reverse engineered copy of the 206.8 cubic inches (3.4 L) Chevrolet engine.[3]

Applications:

  • 1933 Chevrolet Series CA Eagle / Master - 65 hp (48 kW) @ 2800 rpm, 146 lb⋅ft (198 N⋅m) @ 1000-1800 rpm[2]: 10 
  • 1933 Chevrolet Series CB/OA/OB/OC/OD Commercial Utility - 56 hp (42 kW) @ 2750 rpm, 146 lb⋅ft (198 N⋅m) @ 1000 rpm[4]: 8 
  • 1934 Chevrolet Series DA Master - 80 hp (60 kW) @ 3300 rpm, 150 lb⋅ft (203 N⋅m) @ 800-2200 rpm[2]: 10 
  • 1934 Chevrolet Series DB/PA/PB/PC/PD Commercial Utility - 60 hp (45 kW) @ 3000 rpm, 146 lb⋅ft (198 N⋅m) @ 1000 rpm[5]: 12 
  • 1935 Chevrolet Series EA/ED Master - 80 hp (60 kW) @ 3200 rpm, 155 lb⋅ft (210 N⋅m) @ 1000-2000 rpm[6]: 82 
  • 1935 Chevrolet Series EB/QA/QB/QC/QD Commercial Utility - 68.5 hp (51 kW) @ 3200 rpm, 150 lb⋅ft (203 N⋅m) @ 1000-1400 rpm[5]: 124 
  • 1935 Chevrolet Series EC Standard - 74 hp (55 kW) @ 3200 rpm, 150 lb⋅ft (203 N⋅m) @ 1000-2000 rpm[6]: 61 
  • 1936 Chevrolet passenger cars - 79 hp (59 kW) @ 3200 rpm, 156 lb⋅ft (212 N⋅m) @ 900-2000 rpm[7]: 27, 127 
  • 1936 Chevrolet trucks - 72 hp (54 kW) @ 3200 rpm, 155 lb⋅ft (210 N⋅m) @ 900-1500 rpm[8]: 67 

181

A 181-cubic-inch (3.0 L) (3+516 by 3+12 inches (84 mm × 89 mm)) version was also introduced in 1933, in the lower priced Series CC Standard, and used again in the 1934 Series DC Standard. It made a peak 60 hp (45 kW) at 2300 rpm, and peak torque of 125 lb⋅ft (169 N⋅m) at 1200-2000 rpm. The compression ratio in the 1933 model was 5.2:1, and was increased to 5.35:1 in 1934. Production of this version ended after 1934, and the Standard used the 206.8 cubic inch engine thereafter.

Second generation: 1937–1962

Second generation
Overview
Production1937-1963 US
1964-1979 Brazil
Layout
Displacement216 cu in (3.5 L)
235 cu in (3.9 L)
261 cu in (4.3 L)
Cylinder bore3+12 in (88.9 mm)
3+916 in (90.5 mm)
3+34 in (95.25 mm)
Piston stroke3+34 in (95.25 mm)
3+1516 in (100 mm)
ValvetrainOHV, 2 valves per cylinder
Compression ratio6.5:1 to 8.25:1
Combustion
Cooling systemWater-cooled
Output
Power output85 hp (63 kW) to 155 hp (116 kW)

The Stovebolt engine was significantly re-engineered for the 1937 model year, distinguished from the earlier 1929-1936 engines by having a redesigned crankcase with four main bearings in lieu of the older engine's three bearings. It is often known as the "Blue Flame" engine, although that name was only officially applied beginning in 1953, and then only for the 235ci version coupled to the Powerglide automatic transmission (including in the Corvette).[9]

216

This engine had a 216.48-cubic-inch (3.5 L) displacement with a bore and stroke of 3+12 by 3+34 inches (88.90 mm × 95.25 mm). A four-bearing crankshaft was added, along with 6.5:1 compression pistons, for 85 hp (63 kW). A new cylinder head in 1941 increased output to 90 hp (67 kW), and 6.6:1 compression gave the 1949 model 92 hp (69 kW). This generation did not use a fully pressurized oiling system. The connecting rods were oiled using an "oil trough" built into the oil pan that had spray nozzles that squirted a stream of oil at the connecting rods (which were equipped with "dippers"), thus supplying oil to the rod bearings.

Rod bearings were made of babbitt cast integral with the rod. The bearing was adjustable for wear by removing copper shims placed between the rod cap and connecting rod. In this way specified oil clearance could be maintained. If the crankshaft were to be turned undersized, or if the bearing was damaged or worn out, rod and bearing were replaced as a unit, typically at the dealership.[citation needed]

This engine was also used in GM's British Bedford truck. In the late 1930s rival Austin decided to get into the 2-3 ton truck ("lorry") market and in a crash program based the design on the basic architecture of this "Stove Bolt" engine, except that they added detachable shell main and con-rod bearings and pressurized lubrication. That Austin engine, in six-cylinder form, post war known as the Austin D-Series, went on to power cars such as the Austin Sheerline and Princess, and the Jensen Interceptor and 541. Austin also lopped off two cylinders to create the BS1 engine and in that form various versions, with various capacities, powered cars such as the Austin 16, A70 Hampshire and Hereford, A90 Atlantic, the Austin-Healey 100-4 and the Austin Gipsy, a generation of commercial vans, as well as some models of the iconic London black taxi (FX3 and FX4).

Year Compression Ratio Power Torque Notes Reference
1937-1940 6.25:1 85 hp (63 kW) @ 3200 rpm 170 lb⋅ft (230 N⋅m) @ 1200 rpm passenger cars [10][11][12][13]
78 hp (58 kW) @ 3200 rpm 168 lb⋅ft (228 N⋅m) @ 1100 rpm trucks
1941-1942 6.5:1 90 hp (67 kW) @ 3300 rpm 174 lb⋅ft (236 N⋅m) @ 1200-2000 rpm all except COE trucks [14][15]
87 hp (65 kW) @ 3300 rpm 172 lb⋅ft (233 N⋅m) @ 1200-2000 rpm COE trucks
1946-1948 90 hp (67 kW) @ 3300 rpm 174 lb⋅ft (236 N⋅m) @ 1200-2000 rpm Thriftmaster [16][17][18][19][20][21]
1949 6.6:1 [22][23]
1950-1953 92 hp (69 kW) @ 3400 rpm 176 lb⋅ft (239 N⋅m) @ 1000-2000 rpm [24][25][26][27][28][29][30][31]


235

 
1953 Corvette Blue Flame

In 1941 a 235.5-cubic-inch (3,859 cc) version of the 216 engine was introduced for use in large trucks. Both the bore and stroke of (3+916 in × 3+1516 in (90 mm × 100 mm) were increased over the 216. This engine also had an oil "dipper system" as described above, in reference to the oiling system, as in the 216.

The 235 was introduced to the Chevy passenger car line in 1950, coupled to the new Powerglide automatic transmission, and 3.55:1 rear differential. The new version used with the Powerglide transmission featured hydraulic lifters and larger intake valves to produce more power. The pushrod cover on the side of the engine also no longer extended across the cylinder head, to eliminate oil leaks.[32]: 89  In 1953 the 235 engine became standard equipment in all Chevrolet passenger cars (except the sedan delivery body, which continued to use the older 216 until 1954), but when coupled to the standard three-speed manual transmission (called Thrift-King in that guise) it featured solid lifters and lower power output: 108 hp (81 kW) versus 115 hp (86 kW) with the Powerglide.

A fully pressurized lubrication system with shell type main bearings in lieu of poured babbitt and aluminum pistons were also introduced in 1953, but only in the higher-output Blue Flame version in cars ordered with the Powerglide transmission.[32]: 102  The alleged benefits of a "blue flame" rather than yellow had been touted in Chevrolet advertising since 1934.[9] The 1953 Corvette used a unique version of the high-pressure 235 engine with mechanical lifters, the same slightly higher-lift camshaft as used in the 261 truck engine and three single-barrel, side-draft Carter Model YH carburetors to produce 150 hp (112 kW).

From 1954 to 1962, the high-pressure 235 engine with solid lifters was used in some trucks. From 1956 to 1962, all 235 engines used in cars had hydraulic lifters.

The 235 is known as one of the great Chevrolet engines, noted for its power and durability. It was replaced by the third generation 230, beginning in 1962.

Canadian-production GMC trucks also used the 216 and 235 Chevrolet straight-six engines as their base light-duty truck powerplant in the late 1940s and early 1950s. The 216 was used from 1947 to 1953, and the 235 was used in 1954 light-duty trucks only. Medium-duty GMC trucks used US built GMC engines in the 248, 270, and up sizes prior to 1954.

Year Compression Ratio Power Torque Notes Reference
1941-1948 6.62:1 93 hp (69 kW) @ 3100 rpm 192 lb⋅ft (260 N⋅m) @ 1000-1900 rpm all applications except COE trucks [14][15][17][19][21]
90 hp (67 kW) @ 3100 rpm 189 lb⋅ft (256 N⋅m) @ 1000-1900 rpm COE trucks
1949 6.7:1 93 hp (69 kW) @ 3100 rpm 192 lb⋅ft (260 N⋅m) @ 1000-1900 rpm all applications except COE trucks [23]
90 hp (67 kW) @ 3100 rpm 189 lb⋅ft (256 N⋅m) @ 1000-1900 rpm COE trucks
1950-1952 105 hp (78 kW) @ 3600 rpm 193 lb⋅ft (262 N⋅m) @ 2000 rpm passenger cars with Powerglide transmission;
4000, 6000-series heavy-duty trucks
[24][25][26][27][28][29]
100 hp (75 kW) @ 3500 rpm 190 lb⋅ft (258 N⋅m) @ 2000 rpm 5000-series COE trucks [25][27][29]
92 hp (69 kW) @ 3400 rpm 182 lb⋅ft (247 N⋅m) @ 1500-1900 rpm 3700-series Dubl-Duti vans
1953 8.0:1 150 hp (112 kW) @ 4200 rpm 223 lb⋅ft (302 N⋅m) @ 2400 rpm Corvette Blue Flame Special [33]
7.5:1 115 hp (86 kW) @ 3600 rpm 200 lb⋅ft (271 N⋅m) @ 2000 rpm passenger cars with Powerglide transmission [30]
7.1:1 108 hp (81 kW) @ 3600 rpm 200 lb⋅ft (271 N⋅m) @ 2000 rpm passenger cars with manual transmission;
4000, 6000-series heavy-duty trucks
[31]
107 hp (80 kW) @ 3600 rpm 192 lb⋅ft (260 N⋅m) @ 2000 rpm 5000-series COE trucks,
3700-series Dubl-Duti vans
1954 8.0:1 155 hp (116 kW) @ 4200 rpm 225 lb⋅ft (305 N⋅m) @ 2800 rpm Corvette Blue Flame 150 (new camshaft introduced mid-year) [34]
150 hp (112 kW) @ 4200 rpm 223 lb⋅ft (302 N⋅m) @ 2400 rpm Corvette Blue Flame 150
7.5:1 125 hp (93 kW) @ 4000 rpm 200 lb⋅ft (271 N⋅m) @ 2000 rpm passenger cars with Powerglide transmission [35]
115 hp (86 kW) @ 3700 rpm 200 lb⋅ft (271 N⋅m) @ 2000 rpm passenger cars with manual transmission
112 hp (84 kW) @ 3700 rpm 200 lb⋅ft (271 N⋅m) @ 2000 rpm all trucks except COE [36]
107 hp (80 kW) @ 3600 rpm 192 lb⋅ft (260 N⋅m) @ 2000 rpm COE trucks, Dubl-Duti vans
1955 8.0:1 155 hp (116 kW) @ 4200 rpm 225 lb⋅ft (305 N⋅m) @ 2800 rpm Blue Flame 150 (Corvette, in limited numbers)
7.5:1 136 hp (101 kW) @ 4200 rpm 209 lb⋅ft (283 N⋅m) @ 2200 rpm Blue Flame 136 (passenger cars with Powerglide transmission) [37]
123 hp (92 kW) @ 3800 rpm 207 lb⋅ft (281 N⋅m) @ 2000 rpm Blue Flame 123 (passenger cars with manual transmission)
Thriftmaster (light and medium-duty trucks)
Loadmaster (heavy-duty trucks)
[37][38]
1956-1957 8.0:1 140 hp (104 kW) @ 4200 rpm 210 lb⋅ft (285 N⋅m) @ 2400 rpm Blue Flame 140 (passenger cars)
Thriftmaster (light and medium-duty trucks)
Loadmaster (heavy-duty trucks)
[39][40][41][42]
1958 8.25:1 145 hp (108 kW) @ 4200 rpm 215 lb⋅ft (292 N⋅m) @ 2400 rpm Blue Flame 145 (passenger cars)
Thriftmaster (trucks)
[43][44]
1959-1962 135 hp (101 kW) @ 4000 rpm 217 lb⋅ft (294 N⋅m) @ 2000-2400 rpm Hi-Thrift (passenger cars)
Hi-Thrift 235 (1962)
[45][46][47][48]
217 lb⋅ft (294 N⋅m) @ 2000 rpm Thriftmaster (trucks) [49][50][51][52]
110 hp (82 kW) @ 3200 rpm 210 lb⋅ft (285 N⋅m) @ 1600 rpm Thriftmaster economy option

261

In 1954, a 260.9-cubic-inch (4.3 L) truck engine was introduced as an optional Jobmaster engine for heavy-duty trucks. This engine was very similar to the 235 engine, except for a different block casting with a larger piston bore of 3+34 inches (95.25 mm), two extra coolant holes (in the block and head) between three paired (siamesed) cylinders, and a slightly higher lift camshaft. This engine was offered as a step up from the 235 starting in 1954. It was offered in parallel with the GMC V6 engine in 1960 until 1963, when it was discontinued. The 261 US truck engine had mechanical lifters and was available from 1954 to 1962.

The 235 and 261 truck engines were also used by GMC Truck of Canada (GMC truck 6-cylinder engines were also used in Canada). The 1955–1962 Canadian full-size Pontiac car had a standard 261-cubic-inch engine that had hydraulic lifters. This engine was not sold in the US, but was very similar to the US truck 261.

The 261 engines were also used in light trucks and the Chevrolet Veraneio from 1958 to 1979 in Brazil. Produced 148hp.

Year Compression Ratio Power Torque Reference
1954-55 7.17:1 135 hp (101 kW) @ 4000 rpm 220 lb⋅ft (298 N⋅m) @ 2000 rpm [36][38]
1956-57 7.8:1 148 hp (110 kW) @ 4000 rpm 232 lb⋅ft (315 N⋅m) @ 2000 rpm [40][42]
1958-1962 8.0:1 150 hp (112 kW) @ 4000 rpm 235 lb⋅ft (319 N⋅m) @ 2000 rpm [44][49][50][51][52]

See also

References

  1. ^ a b c "Chevrolet: 1911-1996" (pdf). General Motors Heritage Center.
  2. ^ a b c d e f "Chevrolet 1934 Passenger Car Engineering Features - Master" (pdf). General Motors Heritage Center.
  3. ^ Hall, Bob (March–April 1977). "Japan's Toyota with Stovebolts". Special-Interest Autos. No. 39. Bennington, VT. pp. 20–21.
  4. ^ "Chevrolet Trucks 1933" (pdf). General Motors Heritage Center.
  5. ^ a b "Chevrolet Trucks 1934" (pdf). General Motors Heritage Center.
  6. ^ a b "Chevrolet 1935" (pdf). General Motors Heritage Center.
  7. ^ "Chevrolet 1936" (pdf). General Motors Heritage Center.
  8. ^ "Chevrolet Trucks 1936" (pdf). General Motors Heritage Center.
  9. ^ a b Leroux, Bruno (2012-11-15). "Le saviez-vous?" [Did you know?]. La Vie de l'Auto (in French). Fontainebleau Cedex, France: Éditions LVA (1533): 8.
  10. ^ "1937 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 31.
  11. ^ "1938 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 38.
  12. ^ "1939 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 46.
  13. ^ "1940 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 50.
  14. ^ a b "1941 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 122.
  15. ^ a b "1942 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 42.
  16. ^ "1946 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 29.
  17. ^ a b "1946 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 36.
  18. ^ "1947 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 70.
  19. ^ a b "1947 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 49.
  20. ^ "1948 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 35.
  21. ^ a b "1948 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 40.
  22. ^ "1949 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 24.
  23. ^ a b "1949 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 31.
  24. ^ a b "1950 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 28, 44.
  25. ^ a b c "1950 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 76.
  26. ^ a b "1951 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 46, 76.
  27. ^ a b c "1951 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 38.
  28. ^ a b "1952 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 32, 48.
  29. ^ a b c "1952 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 92.
  30. ^ a b "1953 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 33, 51.
  31. ^ a b "1953 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 100.
  32. ^ a b Bell, Doug (1961). Cast-Iron Wonder: Chevrolet's Fabulous Six. Los Angeles: Floyd Clymer Publications. Retrieved 2021-12-30.
  33. ^ "1953 Chevrolet Corvette Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 3.
  34. ^ "1954 Chevrolet Corvette Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 2, 9.
  35. ^ "1954 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 34, 51.
  36. ^ a b "1954 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 102.
  37. ^ a b "1955 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 66.
  38. ^ a b "1955 Chevrolet Truck 2nd Series Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 184.
  39. ^ "1956 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 34.
  40. ^ a b "1956 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 83.
  41. ^ "1957 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 32.
  42. ^ a b "1957 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 99, 105.
  43. ^ "1958 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 43.
  44. ^ a b "1958 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 35, 41.
  45. ^ "1959 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 25.
  46. ^ "1960 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 56.
  47. ^ "1961 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 55.
  48. ^ "1962 Chevrolet Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 60.
  49. ^ a b "1959 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. p. 68.
  50. ^ a b "1960 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 131–134.
  51. ^ a b "1961 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 141–149.
  52. ^ a b "1962 Chevrolet Truck Vehicle Information Kit" (pdf). General Motors Heritage Center. pp. 121–124.
  • FAQ Stovebolt.com — What is a Stovebolt?
  • — The story of the Chevrolet "Stovebolt" Six.
  • Classic definition of a Stovebolt — by the Mid State Antique Stock Car Club

External links

  • Sheridan's 1946 Chevy Truck — 1941–46 Chevrolet truck photos; much information.
  • Stovebolt.com — Online information resource and discussion forums for pre-'73 Chevrolet & GMC trucks.
  • chevytrucks.org — Specializing in information on 1941–59 Chevrolet trucks; how-to articles, pictures, history, etc.
  • — This site is dedicated to the history and preservation of the Chevrolet & GMC commercial haulers that were produced just before, during, and just after World War II, 1941–46.
  • — The No. ? online information resource for old trucks and politics.

chevrolet, stovebolt, engine, straight, engine, made, versions, between, 1929, 1962, chevrolet, division, general, motors, replaced, company, cubic, inch, inline, four, their, sole, engine, offering, from, 1929, through, 1954, company, base, engine, starting, . The Chevrolet Stovebolt engine is a straight six engine made in two versions between 1929 and 1962 by the Chevrolet Division of General Motors It replaced the company s 171 cubic inch 2 8 L inline four as their sole engine offering from 1929 through 1954 and was the company s base engine starting in 1955 when it added the small block V8 to the lineup It was completely phased out in North America by 1962 but GM continued to build it in Brazil until 1979 It was replaced by the Chevrolet Turbo Thrift engine Chevrolet Stovebolt engineOverviewManufacturerGeneral Motors CorporationAlso calledStovebolt SixCast Iron WonderProduction1929 1962 North America1964 1979 BrazilLayoutValvetrainOHV 2 valves per cylinderCombustionFuel typeGasolineCooling systemWater cooledChronologyPredecessor171 Straight 4SuccessorChevrolet Turbo Thrift engine Contents 1 First generation 1929 1936 1 1 A six for the price of a four 1 2 194 1 3 207 1 4 181 2 Second generation 1937 1962 2 1 216 2 2 235 2 3 261 3 See also 4 References 5 External linksFirst generation 1929 1936 EditFirst Generation OverviewProduction1929 1936LayoutDisplacement194 cu in 3 2 L 181 cu in 3 0 L 207 cu in 3 4 L Cylinder bore3 5 16 in 84 mm Piston stroke3 1 2 in 88 9 mm 3 3 4 in 95 25 mm 4 in 101 6 mm ValvetrainOHV 2 valves per cylinderCombustionOil system splash lubrication for the rod bearings and pressurized lubrication to the three main bearings Cooling systemWater cooledOutputPower output50 hp 37 kW 1929 1931 19460 hp 45 kW 1932 1933 19480 hp 60 kW 1934 1936 194ChronologyPredecessor171 Straight 4 A six for the price of a four Edit The new six cylinder engine was introduced in 1929 Chevrolet cars and trucks replacing the company s first inline 4 The 1927 Chevrolet Series AA Capitol had sold very well over a million units sold as compared to about 400 000 of Ford s Model T but Ford had introduced a new model in the autumn of 1927 the Model A The Model A with its improved 40 hp 30 kW four cylinder compared much more favourably to the 27 hp 20 kW Series AA Capitol and sales of the Model A surpassed Chevrolet by 1929 1 14 Chevrolet had been considering switching to a six cylinder engine since 1925 and the ascendency of the Model A precipitated the switch Chevrolet had long been known for its valve in head design in the previous four cylinder engine so General Manager William S Knudsen and marketing executive Richard Grant insisted that the new six cylinder design also use overhead valves The new engine was mockingly called the Cast Iron Wonder and Stovebolt Six for its seemingly old fashioned design 1 12 14 but it was famously advertised as a six for the price of a four to great success the Chevrolet was priced only 100 more than the Model A and the brand regained the sales lead from Ford in 1931 1 12 14 194 Edit When introduced in 1929 the six cylinder was 193 9 cubic inches 3 2 L in size and produced 46 hp 34 kW This engine used a forged steel crankshaft with three main bearings and cast iron pistons Bore and stroke was 3 5 16 in 3 3 4 in 84 mm 95 mm A balanced crankshaft was introduced for 1932 while a higher 5 2 1 compression ratio upped output to 60 hp 45 kW This engine was used in all Chevrolet passenger cars from 1929 through 1932 Applications 1929 Chevrolet Series AC International 46 hp 34 kW 2600 rpm 124 lb ft 168 N m 1000 rpm 2 10 1930 Chevrolet Series AD Universal 50 hp 37 kW 2600 rpm 124 lb ft 168 N m 900 rpm 2 10 1931 Chevrolet Series AE Independence 50 hp 37 kW 2600 rpm 124 lb ft 168 N m 800 rpm 2 10 1932 Chevrolet Series BA Confederate 60 hp 45 kW 3000 rpm 130 lb ft 176 N m 800 2000 rpm 2 10 207 Edit 1933 Chevrolet L6 engine The original 194 CID engine was replaced with an improved 206 8 cubic inch 3 4 L variant the stroke was increased to 4 inches 101 6 mm in 1933 introduced in the Series CA Eagle This newly revised engine put out 65 hp 48 kW and was produced until 1936 Toyota s first engine the Type A produced from 1935 to 1947 was a reverse engineered copy of the 206 8 cubic inches 3 4 L Chevrolet engine 3 Applications 1933 Chevrolet Series CA Eagle Master 65 hp 48 kW 2800 rpm 146 lb ft 198 N m 1000 1800 rpm 2 10 1933 Chevrolet Series CB OA OB OC OD Commercial Utility 56 hp 42 kW 2750 rpm 146 lb ft 198 N m 1000 rpm 4 8 1934 Chevrolet Series DA Master 80 hp 60 kW 3300 rpm 150 lb ft 203 N m 800 2200 rpm 2 10 1934 Chevrolet Series DB PA PB PC PD Commercial Utility 60 hp 45 kW 3000 rpm 146 lb ft 198 N m 1000 rpm 5 12 1935 Chevrolet Series EA ED Master 80 hp 60 kW 3200 rpm 155 lb ft 210 N m 1000 2000 rpm 6 82 1935 Chevrolet Series EB QA QB QC QD Commercial Utility 68 5 hp 51 kW 3200 rpm 150 lb ft 203 N m 1000 1400 rpm 5 124 1935 Chevrolet Series EC Standard 74 hp 55 kW 3200 rpm 150 lb ft 203 N m 1000 2000 rpm 6 61 1936 Chevrolet passenger cars 79 hp 59 kW 3200 rpm 156 lb ft 212 N m 900 2000 rpm 7 27 127 1936 Chevrolet trucks 72 hp 54 kW 3200 rpm 155 lb ft 210 N m 900 1500 rpm 8 67 181 Edit A 181 cubic inch 3 0 L 3 5 16 by 3 1 2 inches 84 mm 89 mm version was also introduced in 1933 in the lower priced Series CC Standard and used again in the 1934 Series DC Standard It made a peak 60 hp 45 kW at 2300 rpm and peak torque of 125 lb ft 169 N m at 1200 2000 rpm The compression ratio in the 1933 model was 5 2 1 and was increased to 5 35 1 in 1934 Production of this version ended after 1934 and the Standard used the 206 8 cubic inch engine thereafter Second generation 1937 1962 EditSecond generationOverviewProduction1937 1963 US1964 1979 BrazilLayoutDisplacement216 cu in 3 5 L 235 cu in 3 9 L 261 cu in 4 3 L Cylinder bore3 1 2 in 88 9 mm 3 9 16 in 90 5 mm 3 3 4 in 95 25 mm Piston stroke3 3 4 in 95 25 mm 3 15 16 in 100 mm ValvetrainOHV 2 valves per cylinderCompression ratio6 5 1 to 8 25 1CombustionCooling systemWater cooledOutputPower output85 hp 63 kW to 155 hp 116 kW The Stovebolt engine was significantly re engineered for the 1937 model year distinguished from the earlier 1929 1936 engines by having a redesigned crankcase with four main bearings in lieu of the older engine s three bearings It is often known as the Blue Flame engine although that name was only officially applied beginning in 1953 and then only for the 235ci version coupled to the Powerglide automatic transmission including in the Corvette 9 216 Edit This engine had a 216 48 cubic inch 3 5 L displacement with a bore and stroke of 3 1 2 by 3 3 4 inches 88 90 mm 95 25 mm A four bearing crankshaft was added along with 6 5 1 compression pistons for 85 hp 63 kW A new cylinder head in 1941 increased output to 90 hp 67 kW and 6 6 1 compression gave the 1949 model 92 hp 69 kW This generation did not use a fully pressurized oiling system The connecting rods were oiled using an oil trough built into the oil pan that had spray nozzles that squirted a stream of oil at the connecting rods which were equipped with dippers thus supplying oil to the rod bearings Rod bearings were made of babbitt cast integral with the rod The bearing was adjustable for wear by removing copper shims placed between the rod cap and connecting rod In this way specified oil clearance could be maintained If the crankshaft were to be turned undersized or if the bearing was damaged or worn out rod and bearing were replaced as a unit typically at the dealership citation needed This engine was also used in GM s British Bedford truck In the late 1930s rival Austin decided to get into the 2 3 ton truck lorry market and in a crash program based the design on the basic architecture of this Stove Bolt engine except that they added detachable shell main and con rod bearings and pressurized lubrication That Austin engine in six cylinder form post war known as the Austin D Series went on to power cars such as the Austin Sheerline and Princess and the Jensen Interceptor and 541 Austin also lopped off two cylinders to create the BS1 engine and in that form various versions with various capacities powered cars such as the Austin 16 A70 Hampshire and Hereford A90 Atlantic the Austin Healey 100 4 and the Austin Gipsy a generation of commercial vans as well as some models of the iconic London black taxi FX3 and FX4 Year Compression Ratio Power Torque Notes Reference1937 1940 6 25 1 85 hp 63 kW 3200 rpm 170 lb ft 230 N m 1200 rpm passenger cars 10 11 12 13 78 hp 58 kW 3200 rpm 168 lb ft 228 N m 1100 rpm trucks1941 1942 6 5 1 90 hp 67 kW 3300 rpm 174 lb ft 236 N m 1200 2000 rpm all except COE trucks 14 15 87 hp 65 kW 3300 rpm 172 lb ft 233 N m 1200 2000 rpm COE trucks1946 1948 90 hp 67 kW 3300 rpm 174 lb ft 236 N m 1200 2000 rpm Thriftmaster 16 17 18 19 20 21 1949 6 6 1 22 23 1950 1953 92 hp 69 kW 3400 rpm 176 lb ft 239 N m 1000 2000 rpm 24 25 26 27 28 29 30 31 235 Edit 1953 Corvette Blue Flame In 1941 a 235 5 cubic inch 3 859 cc version of the 216 engine was introduced for use in large trucks Both the bore and stroke of 3 9 16 in 3 15 16 in 90 mm 100 mm were increased over the 216 This engine also had an oil dipper system as described above in reference to the oiling system as in the 216 The 235 was introduced to the Chevy passenger car line in 1950 coupled to the new Powerglide automatic transmission and 3 55 1 rear differential The new version used with the Powerglide transmission featured hydraulic lifters and larger intake valves to produce more power The pushrod cover on the side of the engine also no longer extended across the cylinder head to eliminate oil leaks 32 89 In 1953 the 235 engine became standard equipment in all Chevrolet passenger cars except the sedan delivery body which continued to use the older 216 until 1954 but when coupled to the standard three speed manual transmission called Thrift King in that guise it featured solid lifters and lower power output 108 hp 81 kW versus 115 hp 86 kW with the Powerglide A fully pressurized lubrication system with shell type main bearings in lieu of poured babbitt and aluminum pistons were also introduced in 1953 but only in the higher output Blue Flame version in cars ordered with the Powerglide transmission 32 102 The alleged benefits of a blue flame rather than yellow had been touted in Chevrolet advertising since 1934 9 The 1953 Corvette used a unique version of the high pressure 235 engine with mechanical lifters the same slightly higher lift camshaft as used in the 261 truck engine and three single barrel side draft Carter Model YH carburetors to produce 150 hp 112 kW From 1954 to 1962 the high pressure 235 engine with solid lifters was used in some trucks From 1956 to 1962 all 235 engines used in cars had hydraulic lifters The 235 is known as one of the great Chevrolet engines noted for its power and durability It was replaced by the third generation 230 beginning in 1962 Canadian production GMC trucks also used the 216 and 235 Chevrolet straight six engines as their base light duty truck powerplant in the late 1940s and early 1950s The 216 was used from 1947 to 1953 and the 235 was used in 1954 light duty trucks only Medium duty GMC trucks used US built GMC engines in the 248 270 and up sizes prior to 1954 Year Compression Ratio Power Torque Notes Reference1941 1948 6 62 1 93 hp 69 kW 3100 rpm 192 lb ft 260 N m 1000 1900 rpm all applications except COE trucks 14 15 17 19 21 90 hp 67 kW 3100 rpm 189 lb ft 256 N m 1000 1900 rpm COE trucks1949 6 7 1 93 hp 69 kW 3100 rpm 192 lb ft 260 N m 1000 1900 rpm all applications except COE trucks 23 90 hp 67 kW 3100 rpm 189 lb ft 256 N m 1000 1900 rpm COE trucks1950 1952 105 hp 78 kW 3600 rpm 193 lb ft 262 N m 2000 rpm passenger cars with Powerglide transmission 4000 6000 series heavy duty trucks 24 25 26 27 28 29 100 hp 75 kW 3500 rpm 190 lb ft 258 N m 2000 rpm 5000 series COE trucks 25 27 29 92 hp 69 kW 3400 rpm 182 lb ft 247 N m 1500 1900 rpm 3700 series Dubl Duti vans1953 8 0 1 150 hp 112 kW 4200 rpm 223 lb ft 302 N m 2400 rpm Corvette Blue Flame Special 33 7 5 1 115 hp 86 kW 3600 rpm 200 lb ft 271 N m 2000 rpm passenger cars with Powerglide transmission 30 7 1 1 108 hp 81 kW 3600 rpm 200 lb ft 271 N m 2000 rpm passenger cars with manual transmission 4000 6000 series heavy duty trucks 31 107 hp 80 kW 3600 rpm 192 lb ft 260 N m 2000 rpm 5000 series COE trucks 3700 series Dubl Duti vans1954 8 0 1 155 hp 116 kW 4200 rpm 225 lb ft 305 N m 2800 rpm Corvette Blue Flame 150 new camshaft introduced mid year 34 150 hp 112 kW 4200 rpm 223 lb ft 302 N m 2400 rpm Corvette Blue Flame 1507 5 1 125 hp 93 kW 4000 rpm 200 lb ft 271 N m 2000 rpm passenger cars with Powerglide transmission 35 115 hp 86 kW 3700 rpm 200 lb ft 271 N m 2000 rpm passenger cars with manual transmission112 hp 84 kW 3700 rpm 200 lb ft 271 N m 2000 rpm all trucks except COE 36 107 hp 80 kW 3600 rpm 192 lb ft 260 N m 2000 rpm COE trucks Dubl Duti vans1955 8 0 1 155 hp 116 kW 4200 rpm 225 lb ft 305 N m 2800 rpm Blue Flame 150 Corvette in limited numbers 7 5 1 136 hp 101 kW 4200 rpm 209 lb ft 283 N m 2200 rpm Blue Flame 136 passenger cars with Powerglide transmission 37 123 hp 92 kW 3800 rpm 207 lb ft 281 N m 2000 rpm Blue Flame 123 passenger cars with manual transmission Thriftmaster light and medium duty trucks Loadmaster heavy duty trucks 37 38 1956 1957 8 0 1 140 hp 104 kW 4200 rpm 210 lb ft 285 N m 2400 rpm Blue Flame 140 passenger cars Thriftmaster light and medium duty trucks Loadmaster heavy duty trucks 39 40 41 42 1958 8 25 1 145 hp 108 kW 4200 rpm 215 lb ft 292 N m 2400 rpm Blue Flame 145 passenger cars Thriftmaster trucks 43 44 1959 1962 135 hp 101 kW 4000 rpm 217 lb ft 294 N m 2000 2400 rpm Hi Thrift passenger cars Hi Thrift 235 1962 45 46 47 48 217 lb ft 294 N m 2000 rpm Thriftmaster trucks 49 50 51 52 110 hp 82 kW 3200 rpm 210 lb ft 285 N m 1600 rpm Thriftmaster economy option261 Edit In 1954 a 260 9 cubic inch 4 3 L truck engine was introduced as an optional Jobmaster engine for heavy duty trucks This engine was very similar to the 235 engine except for a different block casting with a larger piston bore of 3 3 4 inches 95 25 mm two extra coolant holes in the block and head between three paired siamesed cylinders and a slightly higher lift camshaft This engine was offered as a step up from the 235 starting in 1954 It was offered in parallel with the GMC V6 engine in 1960 until 1963 when it was discontinued The 261 US truck engine had mechanical lifters and was available from 1954 to 1962 The 235 and 261 truck engines were also used by GMC Truck of Canada GMC truck 6 cylinder engines were also used in Canada The 1955 1962 Canadian full size Pontiac car had a standard 261 cubic inch engine that had hydraulic lifters This engine was not sold in the US but was very similar to the US truck 261 The 261 engines were also used in light trucks and the Chevrolet Veraneio from 1958 to 1979 in Brazil Produced 148hp Year Compression Ratio Power Torque Reference1954 55 7 17 1 135 hp 101 kW 4000 rpm 220 lb ft 298 N m 2000 rpm 36 38 1956 57 7 8 1 148 hp 110 kW 4000 rpm 232 lb ft 315 N m 2000 rpm 40 42 1958 1962 8 0 1 150 hp 112 kW 4000 rpm 235 lb ft 319 N m 2000 rpm 44 49 50 51 52 See also EditChevrolet Turbo Thrift engine List of GM engines Chevrolet Straight 4 engine General Motors Atlas engine LL8 Vortec 4200 Duramax I6 engineReferences Edit a b c Chevrolet 1911 1996 pdf General Motors Heritage Center a b c d e f Chevrolet 1934 Passenger Car Engineering Features Master pdf General Motors Heritage Center Hall Bob March April 1977 Japan s Toyota with Stovebolts Special Interest Autos No 39 Bennington VT pp 20 21 Chevrolet Trucks 1933 pdf General Motors Heritage Center a b Chevrolet Trucks 1934 pdf General Motors Heritage Center a b Chevrolet 1935 pdf General Motors Heritage Center Chevrolet 1936 pdf General Motors Heritage Center Chevrolet Trucks 1936 pdf General Motors Heritage Center a b Leroux Bruno 2012 11 15 Le saviez vous Did you know La Vie de l Auto in French Fontainebleau Cedex France Editions LVA 1533 8 1937 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 31 1938 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 38 1939 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 46 1940 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 50 a b 1941 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 122 a b 1942 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 42 1946 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 29 a b 1946 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 36 1947 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 70 a b 1947 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 49 1948 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 35 a b 1948 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 40 1949 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 24 a b 1949 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 31 a b 1950 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center pp 28 44 a b c 1950 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 76 a b 1951 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center pp 46 76 a b c 1951 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 38 a b 1952 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center pp 32 48 a b c 1952 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 92 a b 1953 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center pp 33 51 a b 1953 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 100 a b Bell Doug 1961 Cast Iron Wonder Chevrolet s Fabulous Six Los Angeles Floyd Clymer Publications Retrieved 2021 12 30 1953 Chevrolet Corvette Vehicle Information Kit pdf General Motors Heritage Center p 3 1954 Chevrolet Corvette Vehicle Information Kit pdf General Motors Heritage Center pp 2 9 1954 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center pp 34 51 a b 1954 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 102 a b 1955 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 66 a b 1955 Chevrolet Truck 2nd Series Vehicle Information Kit pdf General Motors Heritage Center p 184 1956 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 34 a b 1956 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 83 1957 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 32 a b 1957 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center pp 99 105 1958 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 43 a b 1958 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center pp 35 41 1959 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 25 1960 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 56 1961 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 55 1962 Chevrolet Vehicle Information Kit pdf General Motors Heritage Center p 60 a b 1959 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center p 68 a b 1960 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center pp 131 134 a b 1961 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center pp 141 149 a b 1962 Chevrolet Truck Vehicle Information Kit pdf General Motors Heritage Center pp 121 124 FAQ Stovebolt com What is a Stovebolt Chevrolet Stovebolt Six by Jack Nerad The story of the Chevrolet Stovebolt Six Classic definition of a Stovebolt by the Mid State Antique Stock Car ClubExternal links EditSheridan s 1946 Chevy Truck 1941 46 Chevrolet truck photos much information Stovebolt com Online information resource and discussion forums for pre 73 Chevrolet amp GMC trucks chevytrucks org Specializing in information on 1941 59 Chevrolet trucks how to articles pictures history etc The Art Deco Series This site is dedicated to the history and preservation of the Chevrolet amp GMC commercial haulers that were produced just before during and just after World War II 1941 46 OldTruckNetwork com The No online information resource for old trucks and politics Retrieved from https en wikipedia org w index php title Chevrolet Stovebolt engine amp oldid 1120211918 235, wikipedia, wiki, book, books, library,

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