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ENGINE SPECS

1955 Chevrolet 235 (123 hp) Inline 6 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: One-Fifty, Two-Ten, Bel-Air, w/Standard Trans

Wheel base: 115

Valve Location: In head

Bore and Stroke: 3.5625 x 3.9375

Piston displacement, Cubic Inches: 235

Compression ratio: 7.5

Maximum Brake Horsepower: Standard Trans: 123 @ 3800 RPM

Maximum Torque Lbs.Ft. @ RPM: Standard Trans: 207 @ 2000

Normal Oil Pressure Pounds: 35

TUNE UP SPECIFICATIONS

Spark Plug Make: AC 44-5

Spark Plug Gap, Inch: .035

Firing Order: 153624

Ignition Timing: Timing mark: steel ball located on flywheel.

Engine Idle Speed, RPM: Manual shift trans. 475

Cylinder Head Torque Lbs.Ft.: 90-95

Compression Pressure & Cranking Speed: 130 Min.

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale:
     Shim thickness to use: Standard Trans.: .0015
    Pounds Pull on Scale: Standard Trans.: 7-18

Rings: Compression: .007; Oil: .015

Wristpin Diameter, Inch: .8662

VALVE SPECIFICATIONS

Operating Clearance:
    Standard trans:
        Intake: .006 H
        Exhaust: .013 H

Clearance for Timing Intake: 0

Valve Seat Angle, degrees: Intake 30; exhaust 45

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
    Standard trans:
         Intake opens: 1 degrees ATDC
         Exhaust closes : 9 degrees ATDC

Valve Spring Pressure Pounds at Inches Length:
    Standard Trans: 160 @ 1-1/2

Valve Lift, Zero Lash:
    Standard Trans: Intake: .2941; Exhaust: .3118

Valve Stem Clearance:
    Intake: .001-003
    Exhaust: .001-.003

Valve Stem Diameter:
    Intake: .3410 - .3417
    Exhaust: .3410 - .3417

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.311-2.312
    Bearing Clearance, Inch: .001-.003

Main Bearings:
    Journal Diameter, Inches: No. 1: 2.6835 - 2.6845; No. 2: 2.7145-2.7155; No. 3: 2.7455-2.7465; No. 4: 2.7765-2.7775
    Bearing Clearance, Inch: .001-.003
    Crankshaft End Play, Inch (taken on No. 3 bearing): .003 - .009

CAPACITY DATA

Cooling System:
    Without heater: 16 quarts
    With heater: 17 quarts
    Radiator Cap Relief Presure: 6-1/4 - 7-1/2
    Thermostat Opening Temp.: 180

Fuel Tank: 16 gallons

Engine Oil: 5 quarts (add 1 quart with filter change)

Transmission: 2 pints

Rear Axle: 3-1/2 pints

Other 1955 Chevrolet Engine Specs

1955 Chevrolet 235 (123 hp) Inline 6 Engine Specs

1955 Chevrolet 235 (136 hp) Inline 6 Engine Specs

1955 Chevrolet 235 (123 hp) Inline 6 Engine Distributor Specs

1955 Chevrolet 235 (123 hp) Inline 6 Engine Generator Specs

1955 Chevrolet 235 (123 hp) Inline 6 Engine Regulator Specs

1955 Chevrolet 235 (123 hp) Inline 6 Engine Starting Motor Specs

1955 Chevrolet 235 (123 hp) Inline 6 Engine Tightening Specs

1955 Chevrolet Wheel Alignment Specs

Return to Chevrolet Engine Specs Index


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