c6 intake
Safety Car
Joined: Nov 2010
Posts: 3,725
Likes: 84
From: Woodlands (houston) TX
do you mean the intake manifold? or the filter and intake tube?
the intake manifold from the c6 you can use is the only the LS2 and it sucks unless it has been ported, you want a LS6 intake manifold. if you mean the filter and tube just buy a aftermarket set up.
the intake manifold from the c6 you can use is the only the LS2 and it sucks unless it has been ported, you want a LS6 intake manifold. if you mean the filter and tube just buy a aftermarket set up.
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
I've never heard anyone say that an LS2 swap on an LS1 was something people consider. The LS2 setup sucks.
Team Owner
Joined: Feb 2001
Posts: 27,251
Likes: 130
From: Short Hills, NJ
Safety Car
Joined: Nov 2010
Posts: 3,725
Likes: 84
From: Woodlands (houston) TX
well wait a min wasnt it in 2002 when gm put ls6 intakes on all the motors ls1 and ls6. i would say you would see considerable gains in switching to a fully ported(center post removed) LS2 intake due to 90mm throttle body opening. and if you really wanna pick up go to 90mm TB as well.
Team Owner
Joined: Feb 2001
Posts: 27,251
Likes: 130
From: Short Hills, NJ
It would seem that way and yes switching to a 90mm throttle body opening (and throttle body) should let more air in but still many tests have shown that the LS2 intake just does not flow as well as the LS6 intake does.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
well wait a min wasnt it in 2002 when gm put ls6 intakes on all the motors ls1 and ls6. i would say you would see considerable gains in switching to a fully ported(center post removed) LS2 intake due to 90mm throttle body opening. and if you really wanna pick up go to 90mm TB as well.
If the TB is a restriction, then yes. the real bottle neck is the MAF in front of it but it takes big power to have that be a restriction. A 440 motor I helped with saw a big gain with a Lingenfelter MAF. The motor was in a C5. It was in the 540rwhp range.
I dount it will be a big help on H/C motors.
I was wrong in the past about the MAF screen so if you do swap out for a 100MM maf, use one.
I think the TB after the MAF is the next bottle neck. FI would definitely benefit.
The LS2 intake manifold has the worst looking runners and the LS3 has the best looking being there are no casting marks (LS3 and L76). The LS6 is much like the LS2 in regard to casting marks where the sections of the plastic come together. While both respond to porting, a really bad LS2 will pick up the most power. An LS3 picks up the least amount.
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Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
It's been done on cars with LS1 intake manifolds and it helped a little bit (probably due more to the larger 90mm throttle body opening than anything else) but one would likely be going backwards if they replaced an LS6 intake manifold (be it on an LS1 or LS6 motor) with an LS2 manifold.
Swapping to the LS2 intake is just swapping out junk for junk.
