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ENGINE SPECS

1947 Cadillac 346 (150 hp) V8 Engine Specs

GENERAL SPECIFICATIONS

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

Wheel base: Series 60S: 133; Series 61: 126; Series 62: 129; Series 75: 136

Valve Location: In block

Bore and Stroke: 3-1/2 x 4-1/2

Piston displacement, Cubic Inches: 346.0

Compression ratio: 7.25

Maximum Brake Horsepower: 150 @ 3400 RPM

Maximum Torque Lbs.Ft. @ RPM: 260 @ 1700 RPM

Normal Oil Pressure Pounds: 30

TUNE UP SPECIFICATIONS (all models)

Spark Plug Make: AC 104

Spark Plug Gap, Inch: .030

Firing Order: 18736542 (front to rear: Right bank 2-4-6-8, left bank 1-3-5-7)

Timing Mark: IGN, location: Vib. Damper

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

Cylinder Head Torque Lbs.Ft.: 70-75

Compression Pressure & Cranking Speed: 105

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: .007
Oil: .007

Clearance in Groove: Compression: .0022-0035; Oil: .0015-.003

Wristpin Diameter, Inch: .875

VALVE SPECIFICATIONS

Operating Clearance:
     Intake: 0  Exhaust: 0

Valve Seat Angle, degrees: 45

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
         Intake opens: Top Dead Center
         Exhaust Closes: 10 ATDC

Valve Spring Pressure Pounds at Inches Length:
    Inner Spring: 66 @ 1-59/64

Valve Stem Clearance: Intake: .001-.003; Exhaust: .002-.004

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.4590-2.4595
    Bearing Clearance, Inch: .0005-.002
    Rod End Play, Inch: .008-.014
    Rod Bolt Tension: Lbs.Ft.: 60-65

Main Bearings:
    Journal Diameter, Inches: 2.4990-2.4995
    Bearing clearance: .0008-.0025
    Shaft End Play: .001-.005    (Thrust on Number 2 Bearing)
    Main Bolt Tension: Lbs.Ft.: 130-140

CAPACITY DATA

Cooling System:
    Without heater: 25 quarts
    Without heater: 25; with heater: 26

Fuel Tank: All models except 75: 20 gallons; Model 75: 24 gallons

Engine Oil: 7 quarts

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

Rear Axle: 5 pints

Other 1947 Cadillac Engine Specs

1947 Cadillac 346 V8 (150hp) Engine Specs

1947 Cadillac 346 V8:
Distributor Specs


1947 Cadillac 346 V8:
Generator Specs


1947 Cadillac 346 V8:
Regulator Specs


1947 Cadillac 346 V8:
Starting Motor Specs


1947 Cadillac:
Wheel Alignment Specs


Return to Cadillac Engine Specs Index


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