[dauber65]

Team,
I hope this is an easy question. I picked up a complete Comp Cam kit with a timing chain. I know the cam has a 4 degree advance build in. When I removed the GM chain I took note of the cam gear's timing mark in relation to the key hole to make sure I install the new one properly. I then noticed my new cam gear has three key hole positions. One matches up perfectly to put a mark right where my old one left off. The other two have (-4) and (4) degrees marked near the keyways. Do I use the one that puts it right where the stock one left the mark. Or do I use the (4) because my cam has a built in four degrees?
I'm assuming I use the key that puts it where my factory one was at, but I thought I'd check with you guys.

 

[Mike]

Yes ,put it where the stock one was.
Using the other positions will either advance the cam another 4°'s or retard it 4°'s.
http://www.compcams.com/Technical/Instructions/Files/172.pdf

 

[69shovel&90454SS]

If you are sure the cam has 4 degrees built in, use the zero keyway. This will, in theory, give an installation of 4 degrees advanced. I say in theory because if you don't use a degree wheel, you won't know for sure how accurate it is.

 

[wildman926]

DITTO to both John and Mike's posts.

 

[dauber65]

Thanks for the link, thats what I thought. I find it odd that info wasn't in the box set with the timing chain.