Worth getting a retune??
Thread Starter
Racer
Joined: Apr 2009
Posts: 293
Likes: 1
From: Christiansburg Virginia
Worth getting a retune??
I was fortunate enough to purchase my 08 vette from a forum member that has a lot of GREAT work done to it. k&n intake, ported throttle body and intake manifold, ported ls3 heads, ligenfelter gt11 cam, dynatech headers, xpipe, and magnaflow exhaust. My dyno numbers are the following, 467hp and 433 trq. I was told conservative tune. Well, you can never have too much and from what Ive been looking at 500 rwhp seems reasonable with this set up. Any advice/ideas/opinions. thanks.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
I was fortunate enough to purchase my 08 vette from a forum member that has a lot of GREAT work done to it. k&n intake, ported throttle body and intake manifold, ported ls3 heads, ligenfelter gt11 cam, dynatech headers, xpipe, and magnaflow exhaust. My dyno numbers are the following, 467hp and 433 trq. I was told conservative tune. Well, you can never have too much and from what Ive been looking at 500 rwhp seems reasonable with this set up. Any advice/ideas/opinions. thanks.
We're down in Va Beach. I've built and tuned a mess of the LS3s. If you wanna come down for a dyno and have me evaluate your tune you can. Cost would be minimal for us to check it. It's almost impossible to know if there's more in it without seeing what the A/F is on the dyno, and looking at the tune.
www.vaspeed.com
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
I was fortunate enough to purchase my 08 vette from a forum member that has a lot of GREAT work done to it. k&n intake, ported throttle body and intake manifold, ported ls3 heads, ligenfelter gt11 cam, dynatech headers, xpipe, and magnaflow exhaust. My dyno numbers are the following, 467hp and 433 trq. I was told conservative tune. Well, you can never have too much and from what Ive been looking at 500 rwhp seems reasonable with this set up. Any advice/ideas/opinions. thanks.
Actually, they are much stronger than I would have thought with your set up which is very close to mine. My car has ported 243 castings and your dyno numbers are about 40 rwhp more.
Are you sure its got GT11 cam? Could it be the GT1-1?
If you want more, FAST intake and a cam with more duration would be the first areas to look at. Then drivability will be impacted.
Last edited by Mez; May 24, 2009 at 06:38 PM.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
Those are VERY good numbers with your set up and I doubt that you would gain much from a re-tune but it would not cost much to have someone else look at it. Did you get a print out with the A/F ratio?
Actually, they are much stronger than I would have thought with your set up which is very close to mine. My car has ported 243 castings and your dyno numbers are about 40 rwhp more.
Are you sure its got GT11 cam? Could it be the GT1-1?
If you want more, FAST intake and a cam with more duration would be the first areas to look at. Then drivability will be impacted.
Actually, they are much stronger than I would have thought with your set up which is very close to mine. My car has ported 243 castings and your dyno numbers are about 40 rwhp more.
Are you sure its got GT11 cam? Could it be the GT1-1?
If you want more, FAST intake and a cam with more duration would be the first areas to look at. Then drivability will be impacted.
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
My primary question is this:
Does it make sense that a ported LS3 should make 40 more rwhp than a ported LS2 with the same cam, headers, etc??
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
Yes. The engine is larger, and the heads flow like Niagara Falls!! The LS3s are VERY responsive to mild cams. I've done cam/header cars that make 475 or so.
Thread Starter
Racer
Joined: Apr 2009
Posts: 293
Likes: 1
From: Christiansburg Virginia
Depends on what they call conservative.
We're down in Va Beach. I've built and tuned a mess of the LS3s. If you wanna come down for a dyno and have me evaluate your tune you can. Cost would be minimal for us to check it. It's almost impossible to know if there's more in it without seeing what the A/F is on the dyno, and looking at the tune.
www.vaspeed.com
We're down in Va Beach. I've built and tuned a mess of the LS3s. If you wanna come down for a dyno and have me evaluate your tune you can. Cost would be minimal for us to check it. It's almost impossible to know if there's more in it without seeing what the A/F is on the dyno, and looking at the tune.
www.vaspeed.com
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