LS1TECH - Camaro and Firebird Forum Discussion
LS1-LS2-LS3-LS6-LS7 PERFORMANCE
Generation III Internal Engine
How much to deck LS1 heads for 10.5 CR?

Generation III Internal Engine 1997-2006 LS1 | LS6

Sponsored by:

How much to deck LS1 heads for 10.5 CR?

Reply Subscribe

Search this Thread

Old

Mar 8, 2005 | 09:52 PM

#1

Thread Starter

TECH Resident

iTrader: (56)

Joined: Jan 2002

Posts: 975

Likes: 0

From: Bartlett, IL

Default

How much to deck LS1 heads for 10.5 CR?

I have stock LS1 heads and looking for a 10.5 CR, how much do I need them decked? And, will I need 7.35" pushrods or will stock lenghts work?

Thanks

Old

Mar 8, 2005 | 09:55 PM

#2

LSX Mechanic

iTrader: (89)

Joined: Nov 2001

Posts: 10,396

Likes: 14

From: Atlanta

Default

~.015ish should get you that much on a 5.7 head.

7.4's should be fine, but the true way will be calculating the base circle of your cam into the equation. I ran 7.4 pushrods with heads cut .025 on a 230/232 cam.

Old

Mar 8, 2005 | 09:58 PM

#3

Thread Starter

TECH Resident

iTrader: (56)

Joined: Jan 2002

Posts: 975

Likes: 0

From: Bartlett, IL

Default

Thanks Damian.

I'll be using a baby cam, nothing bigger than a 222/222 .550 114+2

I've been out of the head/cam train thought since I sold my modded SS, I used to know all this info by hard.

Old

Mar 8, 2005 | 10:28 PM

#4

SN95 Director

iTrader: (16)

Joined: Jul 2003

Posts: 10,755

Likes: 7

From: Valencia, Ca

Default

.010 w/ a stock gasket and deck height will net you 10.54

Old

Mar 9, 2005 | 12:58 AM

#5

TECH Senior Member

Joined: Mar 2004

Posts: 14,620

Likes: 17

From: BFE

Default

I believe that a 0.040>0.042 gasket with no milling will do the same.
and give you a better quench.

Reply Subscribe

deck, decking, heads, ls, ls1, stock

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 04:31 PM.