ENGINE SPECS
1957 Chevrolet 283 (270 hp) V8 Engine Specs
GENERAL SPECIFICATIONS
Model Designation: 150, 210 & Bel Air with 2 4 barrel carburetors and dual exhaust
Wheel base: 115
Valve Location: In head
Bore and Stroke: 3.875 x 3.000
Piston displacement, Cubic Inches: 283
Compression ratio: w/3 4-barrel carbs: 9.5
Maximum Brake Horsepower: w/ 2 4-barrel carbs: 270 @ 6000 RPM
Maximum Torque Lbs.Ft. @ RPM: w/ 2 4-barrel carbs: 285 @ 4200 RPM
Normal Oil Pressure Pounds: 35
TUNE UP SPECIFICATIONS (all models)
Spark Plug Make: AC 44
Spark Plug Gap, Inch: .035
Firing Order: 18436572 (front to rear left bank: 1-3-5-7, right bank: 2-4-6-8)
Timing Mark: Second line before "0" on timing tab on front cover; Location: Damper
Engine Idle Speed, RPM: 425
Compression Pressure & Cranking Speed: 150 min.
Voltage & Polarity: 12 volts, negative ground
PISTON AND RING SPECIFICATIONS
Fitting Pistons with Scale: Pistons removed from above. Shim thickness: .0015
Pounds on a Pull Scale: 7-18
Ring End
Gap: In tapered bores,
fit rings in tightest portion of ring travel
Compression: .009
Oil: .005
Wristpin Diameter, Inch: .9271
VALVE SPECIFICATIONS
Operating
Clearance:
w/mechanical valve lifters and two 4-barrel carbs: Intake:
.012 Hot Exhaust: .012 Hot
Valve Seat Angle, degrees: 45
Valve Timing: (BTDC
= before top dead center; ATDC = after top dead
center)
w/ mechanical valve lifters and two 4-barrel carbs: Intake
opens: 35 BTDC Exhaust
Closes: 31 ATDC
Valve Spring
Pressure Pounds at Inches Length:
Inner
Spring: 69 @ 1.696
Valve Lift Zero Lash: Intake: .398 Exhaust: .398
Stem Diameter: Intake: .3415-.3422 Exhaust: .3410-.3417
Valve Stem Clearance: Intake: .001-.003; Exhaust: .0015-.003
ENGINE BEARING SPECIFICATIONS
Connecting Rod Bearings:
Journal
Diameter, Inches: 1.999-2.000
Bearing Clearance, Inch: .001-.003
Main Bearings:
Journal
Diameter, Inches: 2.2978-2.2988
Bearing clearance: .001-.003
Shaft End Play: .002-.006 (Thrust
on Bearing 5)
CAPACITY DATA
Cooling
System:
Without
heater: 16 quarts
With heater: 17 quarts
Fuel Tank: 16 gallons
Engine Oil: 4 quarts + 1 quart for filter change
Transmission: Standard: 2 pints; w/overdrive: 3 pints; Automatic: 3-1/2 quarts
Rear Axle: 3-1/2 pints
WHEEL ALIGNMENT SPECIFICATIONS
Caster,
Degrees
Limits: +1/2 to +1-1/2
Desired: +1
Camber,
Degrees
Limits: 0 to +1
Desired: +1/2
Toe-In, Inches: 5/32 to 7/32
Toe-Out
on Turns, Degrees: (If
toe-out is incorrect, when other adjustments are
correct, look for bent steering arms.)
Outer wheel: 18-1/2
Inner Wheel: 20
Steering Axis Degrees: (If
spindle support angle is incorrect,
but camber is correct, look for bent suspension
arms or steering knuckle support)
3-1/2 to 4-1/2
Other 1957 Chevrolet engine specs
1957 Chevrolet 283 (270 hp) V8 Engine Specs
1957 Chevrolet 283 (270 hp) V8 Engine Distributor Specs
1957 Chevrolet 283 (270 hp) V8 Engine Generator Specs
1957 Chevrolet 283 (270 hp) V8 Engine Regulator Specs
1957 Chevrolet 283 (270 hp) V8 Engine Starting Motor Specs
1957 Chevrolet 283 (270 hp) V8 Engine Tightening Specs
1957 Chevrolet Wheel Alignment Specs
Other 1957 Chevrolet V8 Engine Options
1957 Chevrolet 265 (162 hp) V8 Engine Specs
1957 Chevrolet 283 (185 hp) V8 Engine Specs
1957 Chevrolet 283 (220 hp) V8 Engine Specs
1957 Chevrolet 283 (245 hp) V8 Engine Specs
1957 Chevrolet 283 (250 hp) V8 Engine Specs
1957 Chevrolet 283 (283 hp) V8 Engine Specs
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