ls3 heads
Instructor
Joined: Apr 2008
Posts: 199
Likes: 109
or B: provide some actual knowledge. 
If your budget is nice and high, MAST motorsports makes a small bore, rectangular port cylinder head (ls3) made for us ls1 guys. Good luck and keep us updated.
AMP Racing
Joined: Aug 2006
Posts: 10,755
Likes: 589
From: Washington TWP NJ
2023 C5 of the Year Finalist - Modified
2017 C5 of Year Finalist
St. Jude Donor '09-'10-'11-'12
Why would you want to install an LS3 style head on your LS1?
First of all, they wont fit.
2nd, unless you're building a track car, it's unlikely you will like the change in performance even if they did fit.
LS3 heads are great for some applications. But the Cath port heads can outperform them in typical street builds.
Good luck with your goals.
First of all, they wont fit.
2nd, unless you're building a track car, it's unlikely you will like the change in performance even if they did fit.
LS3 heads are great for some applications. But the Cath port heads can outperform them in typical street builds.
Good luck with your goals.
