Ls2 vs ls1 throttle body
Thread Starter
Safety Car
Joined: Jun 2004
Posts: 4,987
Likes: 394
From: Stoney Creek Ontario
Ls2 vs ls1 throttle body
I see a lot of for sales and wtb for LS2 throttle bodies for LS1 engines - what's the advantage over the LS1 throttle body? Seems to be a common swap...
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
NO!!!!!!!!
You have to have an intake manifold that will accept an LS2 TB. The LS2 TB will NOT bolt to an LS1/6 intake manifold "UNLESS" the manifold has been modified. TPSI currently has a process that grafts an LS2 TB flange on to a stock manifold. Another manifold that accepts a LS2 TB is the FAST 90 or FAST 92
You also will need an adaptor wiring harness that converts the LS1/6 to LS2 configuration.
If you do this up grade you will see a gain BUT,,,,,,,The gain will be minimal until you do other mods that allows the engine to breath better:
heads
cam
headers
better exhaust
Bill C
You have to have an intake manifold that will accept an LS2 TB. The LS2 TB will NOT bolt to an LS1/6 intake manifold "UNLESS" the manifold has been modified. TPSI currently has a process that grafts an LS2 TB flange on to a stock manifold. Another manifold that accepts a LS2 TB is the FAST 90 or FAST 92You also will need an adaptor wiring harness that converts the LS1/6 to LS2 configuration.
If you do this up grade you will see a gain BUT,,,,,,,The gain will be minimal until you do other mods that allows the engine to breath better:
heads
cam
headers
better exhaust
Bill C
Last edited by Bill Curlee; Apr 27, 2009 at 09:31 AM.
Thread Starter
Safety Car
Joined: Jun 2004
Posts: 4,987
Likes: 394
From: Stoney Creek Ontario
Thanks Bill... just wondering what the attraction was is all... I assumed it was an upgrade for sure, likely less $$ than some of the aftermarket ones...didn't know however that it wouldn't fit the LS6 intake...I did know about the wiring harness though...
