Thread: 01 top swap with 97gtp parts

Originally Posted by 01GrandPrixTURBOGT

dumb not to do what? check the heads?

Dumb not to drop to a 3.3 with a fullsize intercooler. Personally I'd go down to a 3.25 or 3.1. 3.0 will be pushing it on stock injectors.

Originally Posted by matt5112

High compression, remember?

You probably won't be able to touch those pulleys without a cam or heads.

Furthermore, a 3.4 on high comp is about where you start requiring larger injectors than L67.

LOL at high compression. Sorry I always crack up when I hear guys say a L36 has high compression. But I see your point. Should still be able to run at least a 3.3 with a fullsize intercooler. And anyone who is going with a top swap should never stay with their NA injectors. They are just asking for trouble. I assumed this top swap would be done correctly with at least L67 injectors which will be plenty for his setup. When in doubt use an injector formula and you will see what the exact size injectors you need. It's not rocket science and takes out the guessing game. And no one in their right mind mind should even consider a set of heads unless knocking on 10's.

To the op yes a 3.5 pulley is fine if you are paranoid. Happy modding.

Re-read my post.

Never mentioned NA injectors.