Another head question...
Thread Starter
Racer
Joined: May 1999
Posts: 290
Likes: 0
From: Nashville TN
Another head question...
I believe I have found a set of '89 Vette heads (113 casting). I don't think my '85 manifolds/headers will work right with these heads due to the "D" shaped exhaust ports. Am I right? TIA...
:cheers:
:cheers:
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Another head question... (85z51vette)
I believe the early intake base has different head bolt angles but you can make an adjustment to your base.
I'm not sure about the exhaust but think it would work. Check out the part number from GM to be sure. BTW my stock headers don't realy fit my 113 D ports either.
I'm not sure it the EGR is in the same place either.
I'm not sure about the exhaust but think it would work. Check out the part number from GM to be sure. BTW my stock headers don't realy fit my 113 D ports either.
I'm not sure it the EGR is in the same place either.
Advanced
Joined: Apr 2001
Posts: 88
Likes: 0
From: oakdale,mn,u.s.a.
Re: Another head question... (85z51vette)
According to Jim Pace performance parts catalog the 1008813 does not have EGR passages, .100" higher exhaust ports, angle plug design, and drilled for center bolt style valve cover. I am allmost positive you would also need to modify the intake. I have also been looking into a set of these heads for my 87 L98, but it looked like there are better, at least less complicated set ups for the 86E back engines.
Thread Starter
Racer
Joined: May 1999
Posts: 290
Likes: 0
From: Nashville TN
Re: Another head question... (vettemech85)
The heads your are talking about are based on the 8113 heads. I think an actual Corvette 8113 would still have egr, but thats not a major problem. I had planned on purchasing the late model intake as well, so there should be no troubles there. And angle plugs and center bolt valve covers are cool! :D
I might be wrong, so if anyone thinks they just won't work, lemme know! Thanks!
I might be wrong, so if anyone thinks they just won't work, lemme know! Thanks!
Advanced
Joined: Oct 2001
Posts: 71
Likes: 0
From: Fairbanks AK
Re: Another head question... (85z51vette)
Everything from your '85 will bolt straight onto the 10088113 castings. The '85 exhaust manifold ports are round, so you need to carefully port them to the proper shape to utilitze the higher D-shaped port. Do not break through the manifold tubing, remove material from the mounting flange only. My '91 castings did not have the EGR port in the heads. You need centerbolt valve covers. Be sure to use proper head bolts with washers.
[Modified by Turismo, 1:47 AM 1/26/2002]
[Modified by Turismo, 1:47 AM 1/26/2002]
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Advanced
Joined: Apr 2001
Posts: 88
Likes: 0
From: oakdale,mn,u.s.a.
Re: Another head question... (85z51vette)
Let's confirm this intake question. Will the 10088113 heads match the 86e back intakes? :confused: Can you use the late model heads and match them up with later year headers, in a 85 car?
