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gains from ls6 intake
12 Second Club
Joined: Mar 2004
Posts: 94
Likes: 0
From: ca
I picked up 3 tenths and 4 MPH after adding an LS6 intake, P&P TB, and a tune. Conditions at the track were very comparable for both runs. Hard to say how much I gain just from the LS6, but I'm going to assume I picked up 30 rwhp or less with the three mods. Car has LT's, LM1, and a lid. Of course the tune alone could have been half of that gain being that I had LT's, and the LS6 and TB might have been the other half or roughly 15 hp, but thats all just my guess.
OK visited the track after lid and LS6 manifold. The clutch is slipping more but I picked up 1mph anyway (106.6 -> 107.55). Obviously I need to replace the clutch to put the power down, but I think a ported TB would help get more air into the manifold. That will probably be my next mod.
ill be doing an ls6 intake at the end of december or early january with a ported tb, im hoping to see a nice gain. i just dont know if i want to go with a hand ported tb like janzter or the powderpro, or the cnc'd one from rev extreme? any opinions?
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I went with the powderpro, he did a really good port job on the TB and was very up front, honest, and easy to deal with. I felt a solid improvement so to me it was $65 very well spent.
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
I saw .5mph and .05 et improvement from the LS6 intake while still on manifolds. I believe that they have worked synergistically with my headers, though, to provide stronger overall gains.
I saw nothing at the track from my ported TB. Both the ported TB and the LS6 helped a lot with responsiveness and general driveability. I would do them both again, no question.
I saw nothing at the track from my ported TB. Both the ported TB and the LS6 helped a lot with responsiveness and general driveability. I would do them both again, no question.
It seems like the general consensus on the board is that the handported offers little to no gains except in throttle response. I almost want to try the cnc'd one for the claimed gains but it does cost quite a bit more...
i have a cam and lt's and some other stuff 
i have the ls6 intake and p&p throttle body sitting in my garage right now was wondering if it's worth putting it on right now or waiting till i can get it re-tuned??? as i will be purchasing heads mid next year hopefully
i have the ls6 intake and p&p throttle body sitting in my garage right now was wondering if it's worth putting it on right now or waiting till i can get it re-tuned??? as i will be purchasing heads mid next year hopefully 
I would think that the more mods you have to the car, the bigger the difference would be. Since, you increase flow everywhere else, you will reach a point where the LS1 would hold the motor back more and more. On a stock motor not as much.
The good hand ported ones in the $60-$80 range available on here are well worth the $$, but for overall power the $129 exchange for a soild proven 6-8 rwhp is a bargain per dollar spent.
