Stock Head specs

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Mar 24, 2002 | 12:21 AM

SMKNGTA

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Joined: Feb 2002

Posts: 317

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From: WI

Car: 1989 GTA

Engine: LS1

Transmission: T56

Axle/Gears: 9bolt 3.27s

Stock Head specs

Does anyone know the specs on stock L98 heads and LT1 heads?

Mar 24, 2002 | 02:53 AM

monte-ss

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Joined: Apr 2000

Posts: 398

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From: Salisbury NC

Car: 87 Monte Carlo SS

Engine: 89 IROC 350 TPI

Transmission: 700R4 rebuilt w/TCI kit

Axle/Gears: 9" from 57 ranchero unsure gears.

the stock cast iron heads are 64CC (Im pretty sure but not 100%) and the valves are the 1.94 intake 1.5 exhaust, the aluminum are 58cc with same valves no idea on LT1 heads

Mar 24, 2002 | 07:32 PM

SMKNGTA

Thread Starter

Member

Joined: Feb 2002

Posts: 317

Likes: 0

From: WI

Car: 1989 GTA

Engine: LS1

Transmission: T56

Axle/Gears: 9bolt 3.27s

Thanks, is there anyone out there that might know the LT1 specs?

Mar 25, 2002 | 10:07 PM

89Raptor

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Posts: n/a

Here is a link to a site with more information on them and other SBC heads than you can probably use.

http://www.purplesagetradingpost.com...fo/heads1.html

I believe the valves are 1.94/1.50 on an LT1.