what roller rockers fit a 97 3.8l camaro jegs and summit keep telling me diff.

 

read up here: http://www.zzperformance.com/grand_p...ts1.php?id=510

 

You have to find out if you have a "rail rocker" These do not use pushrod guide plates. Or are the push rod holes small?
Also what rocker ratio. 1.5 is usauly stock and a 1.6:1 will increase lift, But they sometimes will not clear the valve spring.
I think only a roller tip rocker could be used with stock low profile valve covers also.
Other than that I believe the rockers are the same as small block V8 rockers.

 

could you really tell a difference with the new aftermarket rocker kit?

 

No. not for street applications. But they make for good conversation.