1950 Chevrolet 235 Engine Specifications

General Specifications
Bore 3 9/16″
Stroke 3 15/16″
Displacement 235.5 ci
Compression 6.75 : 1
Max Brake Horsepower 105 @ 3600 RPM
Max Torque 193 Lbs.ft. @ 2000 RPM
Normal Oil Pressure 14 psi
Spark Plug Make AC 46-5
Spark Plug Gap .035″
Firing Order 153624
Engine Idle Speed 475 RPM
Oil Capacity 5 qts.
Ignition Timing Timing mark: steel ball on flywheel
Cylinder Head Torque 75 – 80 Lbs.ft.
Compression at Crank Speed 110 psi
Piston and Ring Specifications
Min. Ring Gap (Compression) .005″
Clearance in Groove (Compression) .0015″ – .0030″
Min. Ring Gap (Oil) .005″
Clearance in Groove (Oil) .0020″ – .0035″
Wristpin Diameter .8645″ – .8650″
Valve Specifications
Operating Clearance – Intake 0
Operating Clearance – Exhaust 0
Valve Seat Angle – Intake 31°
Valve Seat Angle – Exhaust 46°
Clearance for Timing Intake 0
Intake Valve Timing Opens 16° After Top Dead Center
Exhaust Valve Timing Closes 17.5° After Top Dead Center
Valve Spring Pressure 160 lbs. @ 1.5″
Valve Stem Clearance (Intake) .001″ – .003″
Valve Stem Clearance (Exhaust) .002″ – .004″
Main Engine Bearing Specifications
Journal Diameter (Front) 2.6835″ – 2,6845″
Journal Diameter (No. 2) 2.7145′ – 2.7155″
Journal Diameter (No. 3) 2.7455″ – 2.7465″
Journal Diameter (No. 4) 2.7765″ – 2.7775″
Bearing Clearance .0007″ – .0028″
Crankshaft End Play .003″ – .009″ (taken on No. 3 bearing)
Main Bolt Tension 100-110 Lbs.ft.
Connecting Rod Bearing Specifications
Journal Diameter 2.311″ – 2.312″
Bearing Clearance .0003″ – .0013″
Rod End Play .004″ – .012″
Rod Bolt Tension 35 – 45 Lbs.ft.
Delco-Remy Distributor Specifications
Distributor Part No. 1112358
Rotation Direction Clockwise
Cam Angle 31° – 37°
Breaker Point Opening .022″
Condenser Capacity 18 – .23 Mfds.
Breaker Arm Spring Tension 17 – 21 Oz.
Centifugal Advance Start 1° @ 300RPM
Centifugal Advance Full 16.5° @ 1850RPM
Vacuum Advance Start 7 – 8.5″ of vacuum
Vacuum Advance Full 16.5 – 18.5″ of vacuum
Max Vacuum Advance 10°
Delco-Remy Generator Specifications
Generator Part Number 1102710
Output 36 Amps @ 2400 RPM
Brush Spring Tension 28 oz.
Field Current (6 or 12 volts) 1.75 – 1.9
Delco-Remy Starter Specifications
Starter Part Number 1107075
Bush Spring Tension 24 – 28 oz.
No Load Test 70 amps, 5.65 Volts @ 5500 RPM
Torque Test 550 Amps, 3.25 Volts, Torque: 11 Lbs.ft.

Comments (7)

  1. Gilbert

    3 years ago

    I have a 1950 chev 235…that I got from a machine shop…she has plenty of oil pressure..but running it with the valve cover off for about 10 min..and I see no oil coming from valve train…NORMAL? NO splash no drip nothing …

  2. Gary

    3 years ago

    Take the side cover off over the lifters and follow the oil line that feeds the valve train down to the back of the block. You will see a brass fitting that threads into the block that the oil line goes into. I had the same problem that you describe with my 235 engine last summer and when I took the oil line out and then took the brass fitting out the block I discovered that it was blocked by sludge on the backside which prevented any oil from passing through it.

  3. Bob McAuley

    3 years ago

    I’m trying to id the engine in my 1950 gmc truck. |The number on the block is c324538 can anyone help please.

  4. Kevin Purcell

    3 years ago

    I have a 1950 6400 with casting code HEA 575070.
    Can someone help analyze it?

  5. Fernando

    3 years ago

    I have a 1950 chevy with an engine ID# HAD257166 or it can be HAD257I66 can find the number on any data base. trying to find out if its a 216 or a 235 ?

  6. Eric

    3 years ago

    does the firing order start from the back or the front of the motor cheers

  7. john allen

    1 year ago

    i have a 1950 chevy belair car was running i put fuel stabulizer in it when parked it set for a couple of years . well long story short im trying to start it now. new fuel pump ,points, condensrer. it trys to start as long as your turning it over some times starts then goes dead. yes the same gas in it when parked. is it bad or old gas or should i check something else

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