FOR GM & CHRYSLER GD-350/350N/440/440N/454/454N

* Clean and remove all preserve. Apply grease on bronze ring and place it on the back of cam gear.

* Turn NO.1 piston to TDC posisiton and install crank and cam gears. Line up timing marks face to each other.

* After gears are in mesh, install desired offset bushing on dowel pin hole on cam gear. There are 0-2-4-6-8 degree offset bushings are included in the package. The "0" degree bushing has hole on center.

* Slide idle gear half way in between both gears with the larger gear on the passenger side and the longer axle toward to engine block.

* Put timing cover & gasket in place. Push the idle gear all the way in. Remove cover and make sure to have a 0.015- 0.060" clearance betwen axle and block. The idle gear is riding on the timing cover in normal operation. Grind off axle end to increase clearance or install a bolt on cover to reduce clearance.

* Install cam gear bolts with proper torque. Make sure locking plate is installed.

* Hand crank engine to ensure the gear set is running smoothly. When the larger idle gear is in hard mesh, the small idle gear must has 0.005-0.070" clearance for freely up down movement.

* Install cam button on cam gear. Make sure to have a 0.05-.010" clearance between cam button and timing cover. Grind off button end or add shims for correct clearance.

* Place timing cover with seal compound on both side of gasket.

*Run engine at slow speed to ensure no abnormal sound from timing set.

TECH SUPPORT
CAT POWER ENGINE PARTS, INC.

H=0.025"-8°

H=0.040"-6°

H=0.055"-4°

H=0.066"-2°

H=0.080"-0°