Head Swap on stock bottom???
Thread Starter
Melting Slicks
Joined: Nov 2008
Posts: 2,008
Likes: 12
From: NOLA
Head Swap on stock bottom???
So I have stock ls1 heads on my car now. I may change them to some 317 truck heads(stock unported) and do headstuds in the process.
A&A Si 3.6 pulley
blower cam
headers
meth
Makes 10 pounds of boost now. What kind of boost would it make after the swap? What kind of gains will I get? Will the drop in compression off set the better flow capabilities of the 317 heads and make the gains minimal? All assuming I keep the 3.6 pulley. I am hoping that it will relieve some boost pressure and with the lower compression it will make a little more power but be safer from detonation.
A&A Si 3.6 pulley
blower cam
headers
meth
Makes 10 pounds of boost now. What kind of boost would it make after the swap? What kind of gains will I get? Will the drop in compression off set the better flow capabilities of the 317 heads and make the gains minimal? All assuming I keep the 3.6 pulley. I am hoping that it will relieve some boost pressure and with the lower compression it will make a little more power but be safer from detonation.
Last edited by Robert 2000; May 9, 2012 at 09:43 PM.
Le Mans Master
Joined: Jun 2004
Posts: 6,164
Likes: 103
So I have stock ls1 heads on my car now. I may change them to some 317 truck heads(stock unported) and do headstuds in the process.
A&A Si 3.6 pulley
blower cam
headers
meth
Makes 10 pounds of boost now. What kind of boost would it make after the swap? What kind of gains will I get? Will the drop in compression off set the better flow capabilities of the 317 heads and make the gains minimal? All assuming I keep the 3.6 pulley. I am hoping that it will relieve some boost pressure and with the lower compression it will make a little more power but be safer from detonation.
A&A Si 3.6 pulley
blower cam
headers
meth
Makes 10 pounds of boost now. What kind of boost would it make after the swap? What kind of gains will I get? Will the drop in compression off set the better flow capabilities of the 317 heads and make the gains minimal? All assuming I keep the 3.6 pulley. I am hoping that it will relieve some boost pressure and with the lower compression it will make a little more power but be safer from detonation.
Thread Starter
Melting Slicks
Joined: Nov 2008
Posts: 2,008
Likes: 12
From: NOLA
I should have stated it earlier I have a blown head gasket and my tuner already has some heads that I am getting a good price on. So its one of those since I am in there things.
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Thread Starter
Melting Slicks
Joined: Nov 2008
Posts: 2,008
Likes: 12
From: NOLA
