Max lift Stock valve springs

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May 27, 2013 | 03:34 PM

Lockhart88Iroc

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From: Waco texas

Car: 2004 Chevy Malibu/1988 Iroc Z

Engine: 3.5 v6 Malibu, and 305 camaro

Transmission: 700r4

Axle/Gears: 3:45

Max lift Stock valve springs

What's the safest max lift on a cam I can buy and run on stock valve springs?

May 27, 2013 | 04:36 PM

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Re: Max lift Stock valve springs

.480

May 27, 2013 | 06:20 PM

sofakingdom

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Re: Max lift Stock valve springs

Stock cams are already too much

No aftermarket cam can be used with NEW stock springs, let alone old wore-out ones.

May 28, 2013 | 12:25 PM

88FormulaF_Bomb

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From: nw indiana

Car: 1988 firebird formula 350

Engine: L98

Transmission: 700r4

Axle/Gears: 2.77

Quote:

Originally Posted by g92optioned

.480

setting him up for failure

Posted from Thirdgen.org App for Android

May 28, 2013 | 04:50 PM

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Re: Max lift Stock valve springs

Am I? I have always known it to be .480. Am I wrong?

May 28, 2013 | 05:19 PM

sofakingdom

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Re: Max lift Stock valve springs

Quote:

Am I wrong?

Yes

Stock cams are around .400", with really mild gentle longevity-optimized ramps at the expense of "performance", and stock springs are pretty much maxed out by them.

They are TOTALLY COMPLETELY inadequate for an aftermarket "upgrade" cam, especially any modern one with aggressive violent valve action like the Voodoo or XE series.