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which valve springs?

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04-17-2007, 06:34 AM

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which valve springs?

What are the cheapest valve springs that I can buy from summit, that will work with the ZZ4 cam, its max lift is .510

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04-17-2007, 07:31 PM

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Car: 1988 Firebird S/E

Engine: 406Ci Vortec SBC

Transmission: TH-350/3500stall

Axle/Gears: 7.5" Auburn 4.10 Posi-Traction

Re: which valve springs?

Lunati #73943 at $66 will do the job. Check the installed height and shim as nessessary to get them as close to 1.70" as possible. Comp cams stock diameter valve spring shims kit #4753 $25

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04-19-2007, 05:33 AM

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Re: which valve springs?

I just bought the GMPP orange color coded ZZ4 valve springs from Scoggin-Dickey to run with my ZZ4 cam. Only cost about $45 for the springs. You'll want to get the matching retainers too, which are less than 20 bucks IIRC.

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