Timing Gear Drive Set Installation
RPM Timing Gear Drive Sets are designed to provide superior performance for street and strip
applications. Please review and follow these instructions for proper installation:
• Apply moly-grease on bronze ring and install it on the back of the cam gear
• Set the # 1 piston to TDC.
• Install cam and crank gears to align both timing marks to the centerline of engine facing each other.
• Slide idler gears to fit in between mounted gears with LARGER Idle Gear on left side (facing block)
with longer idle axle towards engine block. If shorter pin is required, use supplied pin.
• Make sure to have 0.015 – 0.060” clearance between engine block and back of idle axles. See
diagram below. Grind off end of idle axle for proper clearance if necessary.
• After gear is in mesh, install offset bushing on cam dowel pin hole. If not degreeing camshaft, put
“0” degree bushing (one with hole in middle) in pin hole. When degreeing cam, always turn crank
clockwise.
• Install cam gear bolts, washers and lock plate to factory torque specification. It is a must to bend
tabs of lock plate over bolt heads to prevent bolts walking.
• Turn crank clockwise and check the Reverse Idle Gear (smaller gear) it should have free vertical
movement. The reverse idle gear is rotating under no-load and must have sufficient clearance.
• Install cam thrust bearing assembly with 0.005 – 0.010” clearance to front cover. If necessary, install
shims or grind off thrust plate for proper clearance.
RPM Timing Gear Drive Sets are designed to provide superior performance for street and strip
applications. Please review and follow these instructions for proper installation:
• Apply moly-grease on bronze ring and install it on the back of the cam gear
• Set the # 1 piston to TDC.
• Install cam and crank gears to align both timing marks to the centerline of engine facing each other.
• Slide idler gears to fit in between mounted gears with LARGER Idle Gear on left side (facing block)
with longer idle axle towards engine block. If shorter pin is required, use supplied pin.
• Make sure to have 0.015 – 0.060” clearance between engine block and back of idle axles. See
diagram below. Grind off end of idle axle for proper clearance if necessary.
• After gear is in mesh, install offset bushing on cam dowel pin hole. If not degreeing camshaft, put
“0” degree bushing (one with hole in middle) in pin hole. When degreeing cam, always turn crank
clockwise.
• Install cam gear bolts, washers and lock plate to factory torque specification. It is a must to bend
tabs of lock plate over bolt heads to prevent bolts walking.
• Turn crank clockwise and check the Reverse Idle Gear (smaller gear) it should have free vertical
movement. The reverse idle gear is rotating under no-load and must have sufficient clearance.
• Install cam thrust bearing assembly with 0.005 – 0.010” clearance to front cover. If necessary, install
shims or grind off thrust plate for proper clearance.
0.015 - 0.060"
CLEARANCE
CLEARANCE
INSTALL SCREW
OR MILL RECESS
Installation Instructions
YOUR ONLY CHOICE FOR PERFORMANCE ENGINE PARTS
| Racing Parts Maximum RPM International Inc. |
See RPM Products Technical Detail:
 |
 |
 |
 |
 |
 |
 |
 |
 |
16313-16319 Arthur St. Cerritos CA 90703 USA Phone:562-926-9188 Fax:562-926-9128 Call us toll-free at 1800-9810-RPM(776) Copyright 2010. RacingPartsMaximum. All rights reserved.