Quote Originally Posted by LS6 Silverado View Post
Ok have a few questions about installing a comp cam in my 02 silverado 5.3l- Cam is the Comp XR265HR- Motor has 82K miles.

1. Will I need a new timing set from Comp so I can degree the cam?
2. Is it even necassary to degree the cam? Will stock timing gears/chain work?
3. Will comp 918's work with stock retainers? If not is there any significant difference between Comps steel retainers vs there titanium besides weight?
4. Oil pump- Should I replace? Still has 45psi at idle warm and over 60psi while driving.
5. Lifters? Stock ones ok or should I go LS7?
6. Other than pushrods anything else I should address while Im in there?
Any thoughts will be greatly appreciatted, Thanks-
Did this same swap a few months ago.

1. & 2. A timing set will not be necessary for your swap. As long as your not changing the timing set, I wouldn't touch the oil pump(4.). The less you take apart, the better off you are.
3. I'm using 918's with stock retainers and they're more than adequate.
5. & 6. The only things I changed with my cam swap were the cam and the springs. Unless that cam has a smaller than stock base circle, everything should work perfectly.