2001 vs. 2002 LS6 head
I think the springs are different. Did the light weight valves come out in 2002? Any flow differences?
Thanks.
As the owner of an '01 I can tell you they don't flow the same. The '02 heads are slightly better. If you want to upgrade I wouldn't worry about the minor difference you'd get from the '02 vs. the '01, but if you are looking to upgrade from LS1's I would go for the '02+.


