Need help with L76 with LS3 cam
Thread Starter
Teching In
Joined: Aug 2010
Posts: 3
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Need help with L76 with LS3 cam I got a g8 gt, put a LS3 cam in and removed the DOD crap. The only other mods I have is a Volant CAI, and slp loud mouth axle backs. Ran the car before having it tuned for about 2 weeks and noticed the problem, i had it tuned hoping the problem would clear, no help. The problem, when running WOT at 4300 RPM in first and second the car breaks up. feels like either the torque converter is locking up and un locking rapidly. after 4700 its fine and pulls REALLY hard. I hooked it up to a tech II at work, and it picked up nothing. i unhooked the MAF no help, then the MAP, no help. even went as far as putting the factory filter box, no help. I am not sure if it is the Valve springs but the cams are not that much different that i should need them. Anyone with help speak up
TECH Resident
Joined: Apr 2008
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From: Right here, right now!
I got a g8 gt, put a LS3 cam in and removed the DOD crap. The only other mods I have is a Volant CAI, and slp loud mouth axle backs. Ran the car before having it tuned for about 2 weeks and noticed the problem, i had it tuned hoping the problem would clear, no help. The problem, when running WOT at 4300 RPM in first and second the car breaks up. feels like either the torque converter is locking up and un locking rapidly. after 4700 its fine and pulls REALLY hard. I hooked it up to a tech II at work, and it picked up nothing. i unhooked the MAF no help, then the MAP, no help. even went as far as putting the factory filter box, no help. I am not sure if it is the Valve springs but the cams are not that much different that i should need them. Anyone with help speak up
Teching In
Joined: Jul 2011
Posts: 7
Likes: 0
From: Auckland, New Zealand
Hi pilotchuck
I know this is an old post, but I wondered what the problem with your LS3 cam turned out to be? I am considering doing the same thing with my L76 motor but I am worried if the valve springs are up to it. What fixed the problem? Thanks
I know this is an old post, but I wondered what the problem with your LS3 cam turned out to be? I am considering doing the same thing with my L76 motor but I am worried if the valve springs are up to it. What fixed the problem? Thanks
