degreeing the cam

[derek]

I,ve read and heard that a cam should always be degreed when installing one and not to trust installing it "straight up" meaning just lining up the timing marks. My question is, is there a way to advance or retard cam timing on o stock Gn motor?

 

[Jerryl]

I,ve read and heard that a cam should always be degreed when installing one and not to trust installing it "straight up" meaning just lining up the timing marks.

It is strongly advised for any motor.

..... My question is, is there a way to advance or retard cam timing on o stock Gn motor?

Not an easy way. Retarding is easier than advancing.
To advance you can con purchase a, adjustable timing gear/chain set. Usually it will have both +2, +4 degree possible increments.

If you'd like to retard, you can file (Moon shape) the bolt holes in the cam gear a little. If you did this to advance the cam, the gear most likely will slip back to the stock position.

There are also off-center bushings on the market, but that is not real easy since you need to enlarge the holes in the cam gear to get it right.