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ENGINE SPECS

1951 Cadillac 331 (160 hp) V8 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: Series 60S, Series 61, Series 62, Series 75

Wheel base: Series 60S: 130; Series 61: 122; Series 62: 126; Series 75: 147

Valve Location: In head

Bore and Stroke: 3-13/16 x 3-5/8

Piston displacement, Cubic Inches: 331.0

Compression ratio: 7.50

Maximum Brake Horsepower: 160 @ 3800 RPM

Maximum Torque Lbs.Ft. @ RPM: 312 @ 1800 RPM

Normal Oil Pressure Pounds: 35

TUNE UP SPECIFICATIONS (all models)

Spark Plug Make: AC 48X

Spark Plug Gap, Inch: .035

Firing Order: 18436572 (front to rear: Right bank 2-4-6-8, left bank 1-3-5-7)

Timing Mark: "A" mark for premiurm fuel; "C" mark for regular fuel; location: Vib. Damper

Engine Idle Speed, RPM:  Standard transmission: 375; w/automatic 375 (in drive)

Cylinder Head Torque Lbs.Ft.: 65-70

Compression Pressure & Cranking Speed: 120 min.

Voltage & Polarity: 6 volts, negative ground

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale: Pistons removed from above. Shim thickness: .002

Pounds on a Pull Scale: 11

Ring End Gap: In tapered bores, fit rings in tightest portion of ring travel
Compression: .010
Oil: .010

Clearance in Groove: Compression: .0017-0035; Oil: .0015-.003

Wristpin Diameter, Inch: 1.000

VALVE SPECIFICATIONS

Operating Clearance:
     Intake: 0  Exhaust: 0

Valve Seat Angle, degrees: 44

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
         Intake opens: 14 BTDC
         Exhaust Closes: 24 ATDC

Valve Spring Pressure Pounds at Inches Length:
    Inner Spring: 60 @ 1-11/16

Valve Stem Clearance: Intake: .001-.0025; Exhaust: .0015-.0035

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.2488-2.2493
    Bearing Clearance, Inch: .0005-.002
    Rod End Play, Inch: .008-.014
    Rod Bolt Tension: Lbs.Ft.: 40-45

Main Bearings:
    Journal Diameter, Inches: 2.4990-2.4995
    Bearing clearance: .0008-.0025
    Shaft End Play: .001-.005    (Thrust on Rear Bearing)
    Main Bolt Tension: Lbs.Ft.: 90-100

CAPACITY DATA

Cooling System:
    Without heater: 18 quarts
    With heater: 19

Fuel Tank: 20 gallons

Engine Oil: 5 quarts

Transmission: w/out overdrive: 2-1/2 pints; Automatic: 12 quarts

Rear Axle: 5 pints

Other 1951 Cadillac Engine Specs

1951 Cadillac 331 V8 (160 hp) Engine Specs

1951 Cadillac 331 V8:
Distributor Specs


1951 Cadillac 331 V8:
Generator Specs


1951 Cadillac 331 V8:
Regulator Specs


1951 Cadillac 331 V8:
Starting Motor Specs


1951 Cadillac:
Wheel Alignment Specs


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