Full Pressure 235 Engine Specifations

1953-62 235 engine Specification

Engine spec.

Bore                                                                                                       3 9/16”

Stroke                                                                                                   3 15/16”

Torque spec. Lbs

Cylinder head                                                                                                95

Mains                                                                                                           105

Rods                                                                                                               40

Flywheel                                                                                                        60

Rocker arm support                                                                                       30

Bellhousing                                                                                                    50

Wrist pin pinch                                                                                              30

Rods & Mains

Rod diameter                                                                                          2.311"

Mains                                                          #1                        2.6835”-2.6845"

                                                                    #2                        2.7145”-2.7155"

                                                                    #3                        2.7455”-2.7465"

                                                                    #4                        2.7765”-2.7775"

Crank end play                                                                                .003”-.011"

Rod side clearance                                                                          .005”-.012"

Rear seal diameter on crank                                                                    3.875"

Head

Valve springs   (+ or – 10 lbs.)                                             65 Lbs. @ 1.844”             Hydraulic lifters                                                                                  1 ½ turns

Solid lifters                                                             .006” intake, .016” exhaust

Intake guide height                                                                                        1"

Exhaust guide height                                                                              15/16"
Original thickness                                                                                          4"

Cam

Cam gear runout                                                                               .004” max

Crank gear runout                                                                             .003” max

Backlash                                                                                         .004”-.006”

End play                                                                                          .001”-.005”

Piston & Rings

Piston clearance                                                                            .0006”-.001”

Ring end gap                                                                                  .007”-.017”

Oil ring rails end gap                                                                     .015”- .055”

Ring clearance in groove                                                               .002”- .004”

Ring clearance in groove (oil ring)                                                .000”- .008”              

Flywheel

Runout                                                                                              .008” max