Installing Cams

Upgrading your cams from stock to aftermarket race cams is the same procedure you go through when adjusting
your valve gap. So before you go any further you need to follow the directions in the Adjusting Valves to the point of
removing the cams. Except you also need to remove the cam gears from the cams before removing them from the cam
bridge. Once you have the cams removed you also need to remove the decompression mechanism from the stock exhaust
cam and put it on the aftermarket exhaust cam.
The decompression mechanism consists of a centrifugal weight, a spring and a shaft / pin.

What you need to do is drive the shaft through and out of the centrifugal weight with a hammer and punch. Place
the exhaust cam in a vice to hold it solid. Make sure to place blocks of wood on both sides of the cam so it
doesn’t get damaged in the vice jaws. Once you have driven the shaft / pin all the way through you can remove the
centrifugal weight and the spring. Do not stretch the spring. Before you install the centrifugal weight onto the
new exhaust cam. Make sure that the shaft / pin can easily slide all the way through the holes in the end of the new
exhaust cam with out binding. Your new cams have a coating on them that builds in the holes that needs to be cleaned out.
When you reinstall the centrifugal weight on the new exhaust cam make sure it moves freely back and forth.
If it doesn’t, remove it and clean the holes out some more on the exhaust cam.
Once you have the decompression mechanism working smoothly install the cams and set the valve gaps. Make sure
when you install the cam gears back onto the cams that you use blue locktight on the threads and torque to 37 foot pounds.