ENGINE SPECS

1956 Buick 322 (220 hp) V8 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: Special V8 - Series 40

Wheel base: Special V8: 122

Valve Location: In head

Bore and Stroke: 4.000 x 3.2

Piston displacement, Cubic Inches: 322

Compression ratio: Special V8: 8.9

Maximum Brake Horsepower: Special V8: 220 @ 4400

Maximum Torque Lbs.Ft. @ RPM: Special V8: 319 @ 2400

Normal Oil Pressure Pounds: 35

TUNE UP SPECIFICATIONS

Spark Plug Make: AC 44

Spark Plug Gap, Inch: .032

Firing Order: 12784563 (front to rear: Left bank: 2-4-6-8; Right bank: 1-3-5-7)

Ignition Timing: Yellow timing mark aligns with "5" on timing indicator: Location: Vib. Damper

Engine Idle Speed, RPM: 450

Cylinder Head Torque Lbs.Ft.: 63-73

Voltage & Polarity: 12 volts, negative ground

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale:
Shim thickness .003
Pounds on Scale: 7 to 13

Ring End Gap:
Compression: .015
Oil: .025

Clearance in Groove: Compression: .002-004; Oil: .0035-.0095

Wristpin Diameter, Inch: .940

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: 30 degrees BTDC
Exhaust Closes: 44 ATDC

Valve Spring Pressure Pounds at Inches Length:
Inner Spring: 24 @ 1-1/2; Outer Spring: 43 @ 1-1/2

Valve Stem Clearance: Intake: .0025; Exhaust: .004

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.249-2.250
    Bearing Clearance, Inch: .0002-.0023
    Rod End Play, Inch: .006-.011
    Rod Bolt Tension: Lbs.Ft.: 45-55

Main Bearings:
    Journal Diameter, Inches: 2.498-2.499
    Bearing clearance: .0005-.0025
    Shaft End Play: .004-.008    (Thrust on Bearing No. 3)
    Main Bolt Tension: Lbs.Ft.: 100-110

CAPACITY DATA

Cooling System:
Without heater: 17-1/2
With heater:19

Fuel Tank: 19 gallons

Engine Oil: 6 quarts

Transmission: 2-1/2 w/auto 10 qts.

Rear Axle: 6 pints

Other 1956 Buick Engine Specs

1956 Buick 322 (220 hp) V8 Engine Specs

1956 Buick 322 (255 hp) V8 Engine Specs

1956 Buick 322 V8 Engine Specs:
Delco-Remy Distributor Specs

1956 Buick 322 V8 Engine Specs:
Delco-Remy Generator Specs

1956 Buick 322 V8 Engine Specs:
Delco-Remy Regulator Specs

1956 Buick 322 V8 Engine Specs:
Delco-Remy Starting Motor Specs

1956 Buick 322
Wheel Alignment Specs

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