iron head lt1

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Jul 19, 2007 | 09:27 PM

92lt1bird

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Joined: Feb 2007

Posts: 8

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iron head lt1

How much lift can the stock iron head valve spring take?

Jul 28, 2007 | 11:13 AM

SERPENT99

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Joined: Jan 2004

Posts: 365

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From: Augusta Georgia

Car: 89 IROC

Engine: 95 350 LT1

Transmission: 4L60E

Re: iron head lt1

check out the impalass forums. They have all the good iron head LT1 info

Aug 23, 2007 | 04:56 PM

stage20

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iTrader: (3)

Joined: Jan 2004

Posts: 2,311

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From: p'cola FL

Car: 88 iroc-z/28

Engine: 408 lsx

Transmission: 5800 stall

Axle/Gears: 4.71

Re: iron head lt1

about .480 is going to be the max. you might be better off staying around .460 if the motor has miles on it.
rule of thumb... cam AND springs.
dont shortcut if you want the most power and reliability.
good luck.

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