1952 Buick 263 (124 hp) Inline 8 Engine Specs

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GENERAL SPECIFICATIONS

Model Designation: Super 8 - Series 50;

Wheel base: 121-1/2; 125-1/2 on model 52

Valve Location: In head

Bore and Stroke: 3-3/16 x 4-1/8

Piston displacement, Cubic Inches: 263.3

Compression ratio: 6.9

Maximum Brake Horsepower: 124 @ 3600 RPM

Maximum Torque Lbs.Ft. @ RPM: 220 @ 2000 RPM

Normal Oil Pressure Pounds: 35

TUNE UP SPECIFICATIONS

Spark Plug Make: AC 46X

Spark Plug Gap, Inch: .025

Firing Order: 16258374

Ignition Timing: ADV. Timing mark on Flywheel

Engine Idle Speed, RPM: 450

Cylinder Head Torque Lbs.Ft.: 65-70

Compression Pressure & Cranking Speed: 114 Min.

Voltage & Polarity: 6 volts, negative ground

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale:
Piston should fall on a .0015 feeler and stay on a .002 feeler

Ring End Gap: (Fit rings in tapered bores for clearance shown in tightest portion of ring travel.)
Compression: .010
Oil: .010 (no fitting necessary with Flex-Fit oil rings)

Clearance in Groove: Compression: .0015-0035; Oil: .0015-.003 (Flex-Fit oil rings: .0015-.0035)

Wristpin Diameter, Inch: .8124-.8129

VALVE SPECIFICATIONS

Operating Clearance:
Series 40: Intake: .015 Hot Exhaust: .015 Hot (0 with hydraulic lifters)
Series 50: Intake: 0, Exhaust 0

Valve Seat Angle, degrees: 45

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
Intake opens: 13 degrees BTDC
Exhaust Closes: 22 ATDC

Valve Spring Pressure Pounds at Inches Length:
Inner Spring: 52 @ 1-5/16; Outer Spring: 119 @ 1-19/32

Valve Stem Clearance: Intake: .0025; Exhaust: .003

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.125-2.126
    Bearing Clearance, Inch: .0005-.002
    Rod End Play, Inch: .005-.010
    Rod Bolt Tension: Lbs.Ft.: 40-45

Main Bearings:
    Journal Diameter, Inches: 2.5625-2.5636
    Bearing clearance: .0005-.002
    Shaft End Play: .004-.008    (Thrust on Bearing No. 3)
    Main Bolt Tension: Lbs.Ft.: 90-100

CAPACITY DATA

Cooling System:
Without heater: 12 quarts (with Dynaflow 13-1/2)
With heater: 13-1/2; quarts (with Dynaflow 15)

Fuel Tank: 19 gallons

Engine Oil: 5-1/2 quarts

Transmission: 1-3/4 w/auto 9-1/2 qts.

Rear Axle: 3-1/2 pints

1952 Buick 263 (120 hp) Inline 8 Engine Specs

1952 Buick 263 (124 hp) Inline 8 (Engine Specs

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