ZZ4 or TFS Heads with a ZZ4 cam

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04-18-2009, 12:26 AM

The Project

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Car: 89 IROC

Engine: 305 TPI / ZZ4 cam

Transmission: Stage 2 700R4, LS1 driveshaft

Axle/Gears: Strange 3.42 w/ Auburn

ZZ4 or TFS Heads with a ZZ4 cam

I'm swapping a ZZ4 cam into my 305TPI 89 IROC.

Which is the better head choice to go with...ZZ4 or TFS 305 heads?

I'll also be adding Comp magnum full roller rockers and Comp moly pushrods.

Thanks

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04-19-2009, 01:38 PM

slow305rs

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Re: ZZ4 or TFS Heads with a ZZ4 cam

Wondering the same thing myself.......not sure what heads are best with the ZZ4 cam.

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