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ENGINE SPECS

1954 Chevrolet 235 (125 hp) Inline 6 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: Six Cylinder:  One-FIfty 6, Two-Ten 6, Bel Air 6; all with Powerglide Transmission

Wheel base: 115

Valve Location: In head

Bore and Stroke: 3-9/16 x 3-15/16

Piston displacement, Cubic Inches: 235.5

Compression ratio: Powerglide: 7.5

Maximum Brake Horsepower: Powerglide: 125 @ 3600 RPM

Maximum Torque Lbs.Ft. @ RPM: Powerglide: 204 @ 2000 RPM

Normal Oil Pressure Pounds: 45

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:  425

Cylinder Head Torque Lbs.Ft.: 90-95

Compression Pressure & Cranking Speed: 130 Min.

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale:
    Removed from Above
Shim thickness to use:
    Standard trans: Pistons should pass on a .002 feeler with light pressure, and lock on a .003 feeler;
    Powerglide: Shim thickness to use: .0015; Pounds pull on scale: 7 to 18

Rings: (for tapered bores for minimum clearance fit rings in tightest portion of ring travel)
    Ring Gap, Minimum: Compression: Powerglide: .007
    Ring Gap, Minimum: Oil: .005
    Clearance in Groove: Compression: Powerglide: .002 - .0035
    Clearance in Groove: Oil: Powerglide: .001 - .0025

Wristpin Diameter, Inch: Powerglide: .8660 - 8665

VALVE SPECIFICATIONS

Operating Clearance:
    Powerglide:
        Intake: 0
        Exhaust: 0

Clearance for Timing Intake: 0

Valve Seat Angle, degrees: Intake 31; exhaust 46

Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
     Powerglide:
         Intake opens: 10-1/2 degrees ATDC
         Exhaust Closes: 15 degrees ATDC

Valve Spring Pressure Pounds at Inches Length:
     Spring: w/Powerglide: 182 @ 1-1/2

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

Valve Lift Zero Lash: w/Powerglide: Intake: .4004; Exhaust: .4004

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.311-2.312
    Bearing Clearance, Inch: .001 - .003
     Rod End Play, Inch: Powerglide: .005-.012
    Rod Bolt Tension, Lbs.Ft.: 35-45

Main Bearings:
    Journal Diameter, Inches: Front: 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    Main Bolt Tension, Lbs.Ft.: 100-110

CAPACITY DATA

Cooling System:
    Without heater: 15 quarts
    With heater: 16 quarts

Fuel Tank: 16 gallons

Engine Oil: 5 quarts

Transmission: capacity of entire Powerglide transmission is 11 qts. However, every 25,000 miles change oil in transmission only and add 5 qts pints;

Rear Axle: 3-1/2 pints

Other 1954 Chevrolet engine specs

1954 Chevrolet 235 (115 hp) Inline 6 Engine Specs

1954 Chevrolet 235 (125 hp) Inline 6 Engine Specs

1954 Chevrolet 235 (125 hp) Inline 6 Engine Distributor Specs

1954 Chevrolet 235 (125 hp) Inline 6 Engine Generator Specs

1954 Chevrolet 235 (125 hp) Inline 6 Engine Regulator Specs

1954 Chevrolet 235 (125 hp) Inline 6 Engine Starting Motor Specs

1954 Chevrolet 235 (125 hp) Inline 6 Engine Tightening Specs

1954 Chevrolet Wheel Alignment Specs

Return to Chevrolet Engine Specs Index


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