Home » Racing Engines » Chevrolet Small Block gen. I 302
Specifications
Chevrolet Small Block gen. I 350, V8 (90o) cyl, 4 stroke, petrol engine
Introduced in 1967
Dimensions
Cylinders arrangement: V8 with 90ยบ included angleStrokes: 4
| Bore x Stroke | Capacity |
|---|---|
| 101.6 x 88.39 mm (4" x 3.48") | 5733 cc, 350ci |
| 102.6 x 88.9 mm (4" x 3.5") | 5882 cc, 359ci |
Construction materials
cast iron or aluminum alloy block 229.2 mm (9.025") height, 111.76 mm (4.4") bore spacing, nodular iron 4 bolt crankshaft caps
A356 Aluminum Alloy head
tufftride-hardened forged 1053-steel crankshaft with 5 main bearings 62.2 mm (2.45") diameter, 53.3mm (2.1") big end bearing diameter
shot peened (a stress relieving process) steel connecting rod length between centers 144.8mm (5.7"), 3/8" bolts size, floating wrist pin
Manganese Bronze valve guides
Cylinder-head
chain driven side camshaft with overhead valves (OHV). Click here
2 valves per cylinder - 16 valves total
1.94" / 2.02" Intake Valves
1.5" exhaust valves
both valve on the same plane, 23 degrees valve plane angle from vertical
Aspiration
Natural with 4 x Weber Carburetors:
- Weber 48 DCOE
- Lucas Mark II mechanical multipoint fuel injection
- Electronic multipoint fuel injection
Ignition
Single spark plug per cylinderFiring order, 1-8-4-3-6-5-7-2
Source
Cooling and lubrication
Water cooled
Dry sump
Models used and Output
| Year | Model, Engine | Induction | Compression ratio | Power | Torque |
|---|---|---|---|---|---|
| 1967 | Lola T70, 5882cc | 4 x Weber 48 IDA | 550 HP (405 KW) @ 7500 RPM | 540 Ft-Lbs (732 NM) | |
| 1967 | Lola T70 Mk 2 | 4 x Weber 48 DCOE | 500 bhp / 373 kW | ||
| 1967 | Lola T70 Mk 3 Spyder, 5882cc | Lucas Mk II | 11.0:1 | 550 HP (405 KW) @ 7500 rpm | |
| 1967 | McLaren M1A, 5735cc | 4 x Weber 48 IDA | 550 HP (405 KW) @ 7500 RPM | 538 Ft-Lbs (730 NM) | |
| 1967 | McLaren M6, 5882cc | Lucas Mk II | 11.0:1 | 525 bhp / 392 KW @ 7000 rpm | |
| 1981 | Lola T600 (alu block) | EMFI | 13.5:1 | 620 bhp / 463 kW @ 7750 rpm | |
| 1982 | March 82G (alu block) | EMFI | 13.5:1 | 620 bhp / 463 kW @ 7750 rpm | |
| 1983 | March 83G (alu block) | EMFI | 13.5:1 | 620 bhp / 463 kW @ 7750 rpm | |
| 1984 | March 84G (alu block) | EMFI | 13.5:1 | 620 bhp / 463 kW @ 7750 rpm |
Source
Source4 bolt main bearings block '69