ZZ4 heads vs Aluminum Vette heads?
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ZZ4 heads vs Aluminum Vette heads?
Are there any differences on 88+ vette heads. I'm still looking to do a 350 TBI swap in my 91 RS and would like some aluminum heads that will bolt to the stock TBI intake. Are they worth the swap? Any things to look for when buying used vette heads? They will be going on a 350 TBI out of a 1990 Caprice cop car. Thanks, Tim
Joined: Sep 2003
Posts: 25,895
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: ZZ4 heads vs Aluminum Vette heads?
ZZ4 heads i believe are already machined to handle more like .550 lift cams when L98 heads are only good to .480ish. ZZ4's should have better valve springs too since they need to handle the larger ZZ4 cam
other than that, i think thats it
other than that, i think thats it
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