What kind of porting needs to be done to the heads to match the cam. This is for my L98 motor. What size intake and exuast valves should I run?

 

Rick, I'd stick with the stock 1.94/1.50? valves. I'd port the heads a little though. You'll need to machine the heads for the extra lift though, and try and find valve springs that will fit in the heads withOUT machining. I'll let ya know when I find my set. I think scoggin-dickey has them:

http://www.scoggindickey.com

*See ya saturday man

 

Cool! keep me updated cause I was going to go with some 2.02/1.60 valves and machine them down to 2.00/1.56. What ever you get should work for me since your cam is going to bigger than mine. Except on the lift.

 

I was thinking about putting in the zz4, and only change springs,retainers and the cam. will this work? I have ported my heads very well. I just didn't know if I would need anything else.