1977 Chevrolet Engines

1977 Chevrolet Engines

& Engine Accessories, Except Carburetors,

All Series & Models

Except Vega, Monza & Chevette

6 Cylinder Engine-250 Cu. In., 110 HP:

Bore & Stroke: 3.875" X 3.53"

Engine Displacement: 250 Cu. In.

Compression Ratio: 8.25:1

Taxable Horsepower: 36.03

Horsepower: 110 @ 3,800 RPM

Torque: 195 Ft. Lbs @ 1,600 RPM

Normal Oil Pressure: 36-41 Lbs/Sq. In.

Carburetor: 1 Barrel

8 Cylinder Engine-305 Cu. In., 145 HP:

Bore & Stroke: 3.736" X 3.48"

Engine Displacement: 305 Cu. In.

Compression Ratio: 8.50:1

Taxable Horsepower: 44.66

Horsepower: 145 @ 3,800 RPM

Torque: 245 Ft. Lbs @ 2,400 RPM

Normal Oil Pressure: 32-40 Lbs/Sq. In.

Carburetor: 2 Barrel

8 Cylinder Engine-350 Cu. In., 170 HP:

Bore & Stroke: 4.00" X 3.48"

Engine Displacement: 350 Cu. In.

Compression Ratio: 8.50:1

Taxable Horsepower: 51.22

Horsepower: 170 @ 3,800 RPM

Torque: 270 Ft. Lbs @ 2,400 RPM

Normal Oil Pressure: 32-40 Lbs/Sq. In.

Carburetor: 4 Barrel

8 Cylinder Engine-350 Cu. In., 180 HP:

Bore & Stroke: 4.00" X 3.48"

Engine Displacement: 350 Cu. In.

Compression Ratio: 8.50:1

Taxable Horsepower: 51.22

Horsepower: 180 @ 4,000 RPM

Torque: 270 Ft. Lbs @ 2,400 RPM

Normal Oil Pressure: 32-40 Lbs/Sq. In.

Carburetor: 4 Barrel

8 Cylinder Engine-350 Cu. In., 210 HP:

Bore & Stroke: 4.00" X 3.48"

Engine Displacement: 350 Cu. In.

Compression Ratio: 9.0:1

Taxable Horsepower: 51.22

Horsepower: 210 @ 5,200 RPM

Torque: 255 Ft. Lbs @ 3,600 RPM

Normal Oil Pressure: 32-40 Lbs/Sq. In.

Carburetor: 4 Barrel

Valve Specifications:

6 Cylinder Engine, 250 Cu. In.:

Valve Lash: 3/4 Turn

Valve Angle:

Seat, 46 Degrees; Face, 45 Degrees

Valve Spring Installed Height: 1-21/32"

Valve Spring Pressure: 175 Lbs @ 1.26"

Valve Stem Clearance

Intake: .0010-.0027"

Exhaust: .0010-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

8 Cylinder Engine, 305 Cu. In.:

Valve Lash: 3/4 Turn

Valve Seat Angle:

Seat, 46 Degrees; Face, 45 Degrees

Valve Spring Installed Height:

Intake: 1-22/32"

Exhaust: 1-19/32"

Valve Spring Pressure:

Intake: 200 Lbs. @ 1.25"

Exhaust: 200 Lbs. @ 1.16"

Valve Stem Clearance

Intake: .0010-.0027"

Exhaust: .0010-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

8 Cylinder Engine, 350 Cu. In.:

Valve Lash: 3/4 Turn

Valve Seat Angle:

Seat, 46 Degrees; Face, 45 Degrees

Valve Spring Installed Height:

Intake: 1-22/32"

Exhaust: 1-19/32"

Valve Spring Pressure:

Intake: 200 Lbs. @ 1.25"

Exhaust: 200 Lbs. @ 1.16"

Valve Stem Clearance

Intake: .0010-.0027"

Exhaust: .0010-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

Pistons, Pins, Rings, Crankshaft & Bearings:

6 Cylinder Engine, 250 Cu. In.:

Piston Clearance: .0010"-.0020"

Ring End Gap:

Compression Ring: .010

Oil Ring: .015

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 1.9928"-2.000"

Bearing Clearance: .0007"-..0027"

Main Bearings:

Shaft Diameter: 2.2983"-2.2993"

Bearing Clearance: .0003"-.0029"

Thrust on Bearing #: 7

Shaft End Play: .002"-.006"

8 Cylinder Engine, 305 Cu. In.:

Piston Clearance: .0007"-.0017"

Ring End Gap:

Compression Ring: .010"

Oil Ring: .015"

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 2.009"-2.100"

Bearing Clearance: .0013" -.0035"

Main Bearings:

Shaft Diameter:

#1: 2.4484"-2.4493"; #2, 3, & 4: 2.4481"-2.4490"

#5: 2.4479"-2.4488"

Bearing Clearance:

Front: .0008"-.0020"

Intermediate: .0011"-.0023"

Rear: .0017"-.0032"

Thrust on Bearing #: 5

Shaft End Play: .002"-.006"

8 Cylinder Engine, 350 Cu. In., Except Corvette High Permormance:

Piston Clearance: .0007"-.0017"

Ring End Gap:

Compression Ring: .010"

Oil Ring: .015"

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 2.099"-2.100"

Bearing Clearance: .0013"-.0035"

Main Bearings:

Shaft Diameter:

#1: 2.4484"-2.4493"; #2, 3, & 4: 2.4481"-2.4490"

#5: 2.4479"-2.4488"

Bearing Clearance:

Front: .0008"-.0020"

Intermediate: .0011"-.0023"

Rear: .0017"-.0032"

Thrust on Bearing #: 5

Shaft End Play: .002"-.006"

8 Cylinder Engine, 350 Cu. In., Corvette High Performance:

Piston Clearance: .0046"-.0056"

Ring End Gap:

Compression Ring: .010"

Oil Ring: .015

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 2.099"-2.100"

Bearing Clearance: .0013"-.0035"

Main Bearings:

Shaft Diameter:

#1: 2.4484"-2.4493"; #2, 3, & 4: 2.4481"-2.4490"

#5: 2.4479"-2.4488"

Bearing Clearance:

Front: .0008"-.0020"

Intermediate: .0011"-.0023"

Rear: .0017"-.0032"

Thrust on Bearing #: 5

Shaft End Play: .002"-.006"

Engine Tightening Specifications:

Engine Tightening, 6 Cylinder, 250 Cu. In.:

Spark Plugs: 15 Ft. Lbs

Cylinder Head Bolts: 95 Ft. Lbs (Left Hand Front Headbolt: 85 Ft. Lbs.)

Exhaust Manifold: 30 Ft. Lbs

Rocker Arm Cover: 45 Inch Lbs.

Connecting Rod Cap Bolts: 35 Ft. Lbs

Main Bearing Cap Bolts: 65 Ft. Lbs.

Flywheel to Crankshaft: 60 Ft. Lbs.

Vibration Damper: 60 Ft. Lbs.

Engine Tightening, 8 Cylinder, 305 Cu. In.:

Spark Plugs: 15 Ft. Lbs

Cylinder Head Bolts: 65 Ft. Lbs.

Intake Manifold: 30 Ft. Lbs

Exhaust Manifold: 20 Ft. Lbs

Rocker Arm Stud: 50 Fg. Lbs.

Rocker Arm Cover: 45 Inch Lbs.

Connecting Rod Cap Bolts: 45 Ft. Lbs.

Main Bearing Cap Bolts: 70 Ft. Lbs.

Flywheel to Crankshaft: 60 Ft. Lbs.

Vibration Damper: 60 Ft. Lbs.

Engine Tightening, 8 Cylinder, 350 Cu. In.:

Spark Plugs: 15 Ft. Lbs

Cylinder Head Bolts: 65 Ft. Lbs.

Intake Manifold: 30 Ft. Lbs

Exhaust Manifold:

Outside Bolts: 20 Ft. Lbs

Inside Bolts: 30 Ft. Lbs.

Rocker Arm Cover: 45 Inch Lbs.

Connecting Rod Cap Bolts: 45 Ft. Lbs.

Main Bearing Cap Bolts: 70 Ft. Lbs.

Outer Bolts on Engines with 4 Bolt Caps: 65 Ft. Lbs.

Flywheel to Crankshaft: 60 Ft. Lbs.

Vibration Damper: 60 Ft. Lbs.

Alternator & Regulator Specifications:

Alternator #1102394

Rated Capacity: 37 Amperes