Which Heads?
Thread Starter
Intermediate
Joined: Oct 2017
Posts: 41
Likes: 1
Which Heads?
I'm looking to do some mods to my 87 coupe, i.e. headers, cam, open airbox. I understand that one big issue on the L98 are the heads. Without going wickedly expensive, what are good heads to swap onto this engine? LT1, Vortec, etc? It currently has aluminium heads if that makes a difference.
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Depending on exactly how far youre going with mods, your stock '128 heads may be fine. The main difference between them and the '113 heads in 88-91 is the exhaust port size, in terms of flow ability. I'd tell you to have them professionally ported if your end goal was 350-400chp. If you want further than AFR heads are the way.
So what is the goal and what combo are you putting together?
So what is the goal and what combo are you putting together?
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Contact TPIS for porting and reconditioning your stock L98 heads: https://www.tpis.com/pages/cylinder
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
I hate dealing with machine shops. I do the heads myself or buy new. Cant go wrong with the jegs heads, for the money.
https://www.jegs.com/i/ProMaxx-Perfo.../2168/10002/-1
https://www.jegs.com/i/ProMaxx-Perfo.../2168/10002/-1
