OLDSMOBILE ALL MODELS PLATE MOUNT THREE (3) GEARS DRIVE – INSTALLATION GUIDE

1. Remove all components from package and clean with kerosene.
2. Remove 2 lifter galley plugs from block, these holes are for new mounting plate
fasteners.
3. Remove idle gear from the mounting plate and install and secure firmly the
mounting plate with 2 bolts at lifter galley plugs.
4. Drill two holes with 17/64 bit at engine block from two bolt holes at mounting
plate lower side to 0.750” deep.
5. Tap both holes with 5/16-18 tap and clean the holes thoroughly.
6. Install the crank gear.
7, Place two washers between the mounting plate and lifter galley plugs. Install
mounting plate and torque the galley plug bolts to 45 ft-lbs. Install two 5/16 bolts
at the new bolt holes and torque to 20 ft-lbs.
8. Install the idle gear and torque the axle bolt to 80 ft-lbs.
9. Grease the brass thrust washer and place it between the cam gear thrust face and
engine block.
10. Install cam gear and torque the thrust bolt to 45 ft-lbs. Place the aluminum
bronze thrust button on the end of thrust bolts.
11. Place a news paper between all gear teeth to ensure proper backlash maintained.
12. Engine Timing:
a. Install damper on crank and set NO.1 cylinder at TDC position.
b. Using Cam maker specification to find No.1 intake opening degree and move
crank to that degree.
c. Place a dial indicator on top of valve to ensure the lift of cam specification has
reached.

For example, if the cam specification indicates the intake opens at 39º with
0.50” lift. Turn the crank to 39º with dial indicator show a 0.050”lift reached.
Mark on the cam gear this is a “0º” timing mark for the cam gear. Install
cam gear bolt.

13. You can advance by clockwise or retard the cam by counterclockwise according
to chart supplied by cam manufacturer.

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