Newer head compatibility on '86 intake manifold??
Thread Starter
Joined: Jan 2002
Posts: 732
Likes: 1
From: waco, tx
Car: 91Z28 L98
Engine: HSR 350
Transmission: Goebel 700R4
Newer head compatibility on '86 intake manifold??
I have an '86 IROC TPI with the 5.0L. I'm looking to build a 350 for it and would like to go with an '87 up block and heads. Will the newer heads bolt right up to my intake manifold or will some bolt holes or anything need to be ground out? I do know of someone who came across this problem, but it was on a truck, not a camaro. So are all the TPI manifold bases the same or were they different for those early years?
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The TPI bases were different in '85 & '86 vs. '87-later. The center two bolts angle on each side is the issue, and a little elongation of the manifold will allow the bolts to fit the later heads.
Thread
Thread Starter
Forum
Replies
Last Post
ambainb
Camaros for Sale
11
Apr 25, 2016 09:21 PM
Dialed_In
Firebirds for Sale
2
Aug 20, 2015 01:45 PM
