1950 Chevrolet 235 Engine Specifications

General Specifications
Bore3 9/16"
Stroke3 15/16"
Displacement235.5 ci
Compression6.75 : 1
Max Brake Horsepower105 @ 3600 RPM
Max Torque193 Lbs.ft. @ 2000 RPM
Normal Oil Pressure14 psi
Spark Plug MakeAC 46-5
Spark Plug Gap.035"
Firing Order153624
Engine Idle Speed475 RPM
Oil Capacity5 qts.
Ignition TimingTiming mark: steel ball on flywheel
Cylinder Head Torque75 - 80 Lbs.ft.
Compression at Crank Speed110 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 - Intake0
Operating Clearance - Exhaust0
Valve Seat Angle - Intake31°
Valve Seat Angle - Exhaust46°
Clearance for Timing Intake0
Intake Valve TimingOpens 16° After Top Dead Center
Exhaust Valve TimingCloses 17.5° After Top Dead Center
Valve Spring Pressure160 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 Tension100-110 Lbs.ft.
Connecting Rod Bearing Specifications
Journal Diameter2.311" - 2.312"
Bearing Clearance.0003" - .0013"
Rod End Play.004" - .012"
Rod Bolt Tension35 - 45 Lbs.ft.
Delco-Remy Distributor Specifications
Distributor Part No.1112358
Rotation DirectionClockwise
Cam Angle31° - 37°
Breaker Point Opening.022"
Condenser Capacity18 - .23 Mfds.
Breaker Arm Spring Tension17 - 21 Oz.
Centifugal Advance Start1° @ 300RPM
Centifugal Advance Full16.5° @ 1850RPM
Vacuum Advance Start7 - 8.5" of vacuum
Vacuum Advance Full16.5 - 18.5" of vacuum
Max Vacuum Advance10°
Delco-Remy Generator Specifications
Generator Part Number1102710
Output36 Amps @ 2400 RPM
Brush Spring Tension28 oz.
Field Current (6 or 12 volts)1.75 - 1.9
Delco-Remy Starter Specifications
Starter Part Number1107075
Bush Spring Tension24 - 28 oz.
No Load Test70 amps, 5.65 Volts @ 5500 RPM
Torque Test550 Amps, 3.25 Volts, Torque: 11 Lbs.ft.

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