Zz-4 Head Porting
07-05-2003, 12:56 PM
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Car: 88 iroc x 2- 1 T-Top, 1 Vert
Engine: 350 tpi, 305 tpi
Transmission: 700R4-2800 stall, 700R4 stock
Zz-4 Head Porting
I'M PORTING A SET OF ZZ-4 ALUM. HEADS. I NEED SOME ADVICE, IS IT O-K TO CUT AWAY THE PRESSED IN STEEL VALVE GUIDE? HOW MUCH MATERIAL SHOULD I REMOVE IN THE BOWL AREAS? HAS ANY BODY DONE THIS BEFORE? I AM SURE THEY HAVE- I DID A SEARCH AND THERE'S 267 THREADS FOR HEAD PORTING AND ZERO THREADS FOR THE ZZ-4 HEADS. JUST DON'T HAVE THE TIME TO READ THEM ALL. HELP ME OUT HERE FELLAS-MIKE
07-05-2003, 01:29 PM
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Car: 91 Z28
Engine: Forged 383
Transmission: Pro-built 700R4
07-06-2003, 01:23 AM
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Car: 88 iroc x 2- 1 T-Top, 1 Vert
Engine: 350 tpi, 305 tpi
Transmission: 700R4-2800 stall, 700R4 stock
thanks joe- i have the s-a porting kit. it outlines pretty much what was on that link. i am more interested in the specifics of the zz-4 heads. i've been getting pretty crazy with the port work and was wondering how thin i can grind the walls between the runners and the water jackets. your car is real close to the setup i've been building-what's it run?-mike.
07-07-2003, 10:34 AM
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07-07-2003, 11:12 AM
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Car: 88 iroc x 2- 1 T-Top, 1 Vert
Engine: 350 tpi, 305 tpi
Transmission: 700R4-2800 stall, 700R4 stock
wow ! you are right, that is what i needed. thanks alot !!
07-07-2003, 11:13 AM
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Car: 88 iroc x 2- 1 T-Top, 1 Vert
Engine: 350 tpi, 305 tpi
Transmission: 700R4-2800 stall, 700R4 stock
joe, i'd still like to know what kind of power you're making....
07-07-2003, 08:52 PM
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Car: 91 Z28
Engine: Forged 383
Transmission: Pro-built 700R4
tpi_roc, thanks that's the link I was really looking for. That one is really good.
Mike, I'm still running the AFR/SR/219cam setup in my car for about another month when I rebuild the 383 again. Right now I'm having bigtime ring sealing problems. When I get done with the new setup and after installing Hooker Supercomps, I'm expecting 475-500hp at the crank or almost 400rwhp. That's what I'm shooting for, but it takes a lot of block preparation and careful assembly to get those kind of #'s from a superram setup, but it can be done with AFR's. I've seen it.
Mike, I'm still running the AFR/SR/219cam setup in my car for about another month when I rebuild the 383 again. Right now I'm having bigtime ring sealing problems. When I get done with the new setup and after installing Hooker Supercomps, I'm expecting 475-500hp at the crank or almost 400rwhp. That's what I'm shooting for, but it takes a lot of block preparation and careful assembly to get those kind of #'s from a superram setup, but it can be done with AFR's. I've seen it.
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07-07-2003, 10:16 PM
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I made a post a while back with a collection of some of my favorite porting links, if you read each and everyone you'd be a pro by the time you were done, might try to do a search for it.
There are other good write ups like this one
There are other good write ups like this one
07-08-2003, 12:08 AM
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Car: 88 iroc x 2- 1 T-Top, 1 Vert
Engine: 350 tpi, 305 tpi
Transmission: 700R4-2800 stall, 700R4 stock
do you remember the title of the thread or the thread #. there are literally 100's of them under " head porting "
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