Aluminum Head Swap Info (with pics)
Read through this ENTIRELY!
Make sure you UNDERSTAND this entirely!
This swap isn't that hard, but it does get a little complicated.
If you still have any questions I will still be here, but the last time I got into a hybrid motor like this way like 2 years ago, and I know I'm forgetting to tell you some info on it...
This thread does a real good job of explaining all the in's and out's of not only the swap, but the myriad of changes one can make in the parts. The 2000+ heads are better then pre-2000 heads, but different then the 2003+ heads; so on and so forth...
John at WOT-Tech.com has made a business out of doing this swap and has made a ton of performance parts for it...you don't have to go "balls to the wall" with the swap to get a good performance boost, but if you did want to, he'd be the guy to see, lol
EDIT: Case in point about my info needing refreshing, the 3400 heads and 3400 pistons yield 9.6:1 compression...3500 heads with 3400 pistons come in around 9:1 CR...a cam with some tight LSA's would bleed off some static compression and make it very boost friendly...if you wanted to go that route...