Pre 87 head on newer style block?
Thread Starter
Joined: Oct 2002
Posts: 905
Likes: 42
From: Hamilton Ontario Canada
Car: 1985 Camaro IROC-Z
Engine: 350
Transmission: GForce T-5
Axle/Gears: 10 bolt 3.73 posi
Pre 87 head on newer style block?
Can aluminum heads designed for pre 87 block be used on 87-later blocks if the correct intake is used?
Joined: Jun 2000
Posts: 5,364
Likes: 51
From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: Pre 87 head on newer style block?
the only difference is the bolt angle on the middle intake bolts. 72 deg. instead of 90. W/ correct intake it's a bolt in deal.
Member
Joined: Aug 2006
Posts: 279
Likes: 1
From: Corning, CA
Car: 89' RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: Pre 87 head on newer style block?
So if you had say a set of heads from an 86' 305 you could also use your intake from the same motor and bolt it on to say, an 89' 305?
Member
Joined: Aug 2006
Posts: 279
Likes: 1
From: Corning, CA
Car: 89' RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: Pre 87 head on newer style block?
Interesting.. I have heads that were rebuilt with no actual miles on it (a bit of time running before I realized the bottom end was toast) that I wouldn't mind keeping for a spare set since the heads on my rs are getting close to rebuild time.
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