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Second Chance Garage

For the Classic Car
Restoration Enthusiast

Second Chance Garage

Second Chance Garage

For the Classic Car
Restoration Enthusiast

Second Chance Garage

Second Chance Garage

For the Classic Car Restoration Enthusiast

Second Chance Garage

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 - .009Main 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