What heads are compattible

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Sep 9, 2011 | 10:30 PM

blue birdy 87

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Joined: Mar 2011

Posts: 327

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From: Washington state

Car: White 84 z28

Engine: Chevy 350

Transmission: T5

Axle/Gears: Posi and?

What heads are compattible

Hi i was wondering what gm cars i can get heads off of from pullapart that would work on a 350 small block. I heard that the about 1999-2004 subarbans with the 5.3 engine have good vortec heads on them. Please dont tell me if you know a vehicle with heads that will fit but wont perform well. I am looking to build a 300 horse or more engine

thanks

Sep 10, 2011 | 03:11 AM

vetteoz

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From: Not in Kansas anymore

Car: 82 Z28

Engine: 383 SP EFI/ 4150 TB

Transmission: T400

Axle/Gears: QP 9" 3.73

Re: What heads are compattible

Quote:

Originally Posted by blue birdy 87

I heard that the 1999-2004 subarbans with the 5.3 engine have good vortec heads on them.

5.3 is a Gen III LSX engine so the heads won't fit on regular SBC.
You need heads from a 96 -00 L31 350 engine that came in trucks ,vans and SUV's
See
http://www.nastyz28.com/forum/showthread.php?t=56505

The good performance Vortec heads for SBC everybody mentions only came on the above vehicles
Read
https://www.thirdgen.org/forums/post...993-post8.html
so you know what you are looking for

As a note; all late GM truck engines are called Vortecs
http://en.wikipedia.org/wiki/GM_Vortec_engine

Last edited by vetteoz; Sep 10, 2011 at 03:22 AM.