LT4 Head Gasket Dimensions?

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Oct 23, 2002 | 06:10 PM

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Thread Starter

Melting Slicks

Joined: Jun 2000

Posts: 3,215

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From: Tampa Florida

LT4 Head Gasket Dimensions?

Planning on doing some cylinder head work on my LT4 and would like to nail down the compression ratio afterward...but need specs on the current OEM LT4 head gasket.

I believe it to be .049 in compressed thickness, but do not know its diameter?

Thanks for the help.

:)

Oct 27, 2002 | 09:27 AM

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Thread Starter

Melting Slicks

Joined: Jun 2000

Posts: 3,215

Likes: 6

From: Tampa Florida

Re: LT4 Head Gasket Dimensions? (No Go)

Anyone?

Thanks

:)

Oct 27, 2002 | 09:28 PM

svcjmo

Racer

Joined: Aug 2001

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From: Smyrna Tn

Re: LT4 Head Gasket Dimensions? (No Go)

If you to increase your compression, use the metal gasket from the impala ss. It measures about 0.03. Don't know about stock.

Oct 29, 2002 | 06:52 PM

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Thread Starter

Melting Slicks

Joined: Jun 2000

Posts: 3,215

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From: Tampa Florida

Re: LT4 Head Gasket Dimensions? (svcjmo)

I would like to bump the compression up a bit.

I'm thinking the Fel Pro gasket 1074 will work pretty well as its compressed is .039 and 4.125 diameter. If my calculations are right, I will go from a 10.8 to 11.1 to 1 compression with same cc head.

The Impala gasket is little too thin, but my real question is if it is able to be used on aluminum heads (no brinnelling?) as the Impala was iron headed.

I don't know...

:)

Thanks for the input!

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