Cam ?s.
Launching!
Joined: Dec 2005
Posts: 214
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From: Brandon, MS
Originally Posted by ChipC
I think Vinci HiPerformance listed one on their web site. Technically, any LSX cam with under .590 lift at the valve (DOD lifter limit) should work. How well it works will be up to you and your tuner.
Chip
Chip
times 3.
I'm still trying to get sponsors to jump on board and develop parts for these cars. LS4 specific.
A couple have come in here. Heads, and Turbo. There needs to be some bolt-on stuff also.
I'm still trying to get sponsors to jump on board and develop parts for these cars. LS4 specific.
A couple have come in here. Heads, and Turbo. There needs to be some bolt-on stuff also.
Staging Lane
Joined: Dec 2004
Posts: 92
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I went back and looked. You are right. They are only doing the 1.8 rockers. However, if you look at the graph from their ImpalaSS page, it actually says UltraTorque camshaft, 1.8 rockers, and springs. Of course, I wouldn't want to do a cam swap for 18hp. Makes sense that it is a typo and really just rockers.
Chip
Chip
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that is a typo. it was only the rockers and springs. that typo has been corrected.
a vinci cam with .551 lift with the 1.8 rockers would yield a net valve lift of .589. unless the LS4 motor has some different pistons than a standard 5.3L has had in the past, i don't see it having any P to V issues.
Originally Posted by BASLS1SS
Vinci only offer's 1.8 ratio rockers... Which would not be able to be used with a higher lift cam anyway due to P to V clearance problems that would result.
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Verdad Gallardo Launching!
Joined: Dec 2005
Posts: 214
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From: Brandon, MS
Originally Posted by mrr23
that is a typo. it was only the rockers and springs. that typo has been corrected.
a vinci cam with .551 lift with the 1.8 rockers would yield a net valve lift of .589. unless the LS4 motor has some different pistons than a standard 5.3L has had in the past, i don't see it having any P to V issues.
a vinci cam with .551 lift with the 1.8 rockers would yield a net valve lift of .589. unless the LS4 motor has some different pistons than a standard 5.3L has had in the past, i don't see it having any P to V issues.
Um.. You are not going to get that kind of work warrantied like a factory warranty. It is illegal to put a cam shaft in an engine if it is not CARB certified. Even then that doesn't mean the factory will cover it.
Only way to do it is to just do it and hope nothing show's up because of the cam install. The factory would deny the warranty as soon as they know the engine was worked on like that.
Only way to do it is to just do it and hope nothing show's up because of the cam install. The factory would deny the warranty as soon as they know the engine was worked on like that.
TECH Fanatic
Joined: Jul 2006
Posts: 1,732
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From: K.C.
you'd be amazed at what you can get done if you know the right people.
but it would be great if it could be installed at the dealer and still covered.
as far as passing emissions, i don't see why it couldn't. hell the one i want doesn't even make any noise. the only thing it would do is barely blurb a lil on start up. then smooths out to a stock sound.
bless the stealth cams
but it would be great if it could be installed at the dealer and still covered.
as far as passing emissions, i don't see why it couldn't. hell the one i want doesn't even make any noise. the only thing it would do is barely blurb a lil on start up. then smooths out to a stock sound.
bless the stealth cams
