COMP Cams 5491 Sprint Car Front Drive Kit for LS Engines - Manual (Page 5)

COMP Cams ®
3406 Democrat Rd.
Memphis, TN 38118
Phone: 901.795.2400
Part #COMP4-158
Revised 8/10/12
Toll Free: 1.800.999.0853
www.compcams.com
Figure 1: Crank Gear Installed in RHS
®
(raised cam) Block Configuration with Crank at #1 TDC
Step 5: Press the SCH1612 idler bearing [41] into the idler gear [3]. Preassemble the idler gear and
two bronze thrust washers [7] onto the axle on the front idler mounting plate [5]. Assemble so that the
slots on the washers are facing the idler gear. Slide the rear idler mounting plate [6] over the axle
ensuring that the counterbore is facing toward the gear. Place the two long aluminum spacers [8] in
between the two idler mounting plates and install the M8X1.25x75mm [30] stud through the front
plate, spacer, and into the threaded hole of the back plate. Note: if you have a later style RHS
®
block,
you can thread the stud into the block itself instead of the rear idler mounting plate. If you run
this configuration, drill out the threaded hole in the rear idler mounting plate to 23/64ths.
Figure 2: Later Style RHS
®
Block Idler Mounting Hole
Step 6: After ensuring that the proper dimple is still pointing directly up on the crank gear, set the cam
gear so that the dimple is pointing directly down. Now slide the idler gear and mounting plate
assembly into place between the cam and crank gears. Ensuring that the long spacer is in place, use
the M8X1.25x55mm socket head cap screw [28] to attach the assembly to the block through the driver
side hole. Now use the M8X1.25x30mm bolt [26] along with the short aluminum spacer [12] to mount
to the block using the lower passenger side hole. Do not tighten these bolts until proper backlash is set.
Later Style RHS
®
Block Idler
Mounting Hole.