what throttle bodies are the same as the LS4?
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From: Lake Zurich IL
what throttle bodies are the same as the LS4? a friend of mine wants a ported and polished t/b and i said i would do it for him. but the GXP is his daily hoopty and cant have the downtime for me to do the p&p. i looked on ebay under LS4, but no t/bs came up. any other ones that will work?
I haven't come across one. (although my searching was mostly for an adapter from a 4 bolt throttle body to a three bolt intake flange)
My calipers tell me we have a 76mm TB, four bolt pattern. I believe the 5.3 truck engines have a 85mm TB, which won't match up too well to the intake.
My calipers tell me we have a 76mm TB, four bolt pattern. I believe the 5.3 truck engines have a 85mm TB, which won't match up too well to the intake.
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From: K.C.
COLORADO 04-05 Throttle Valve Assm; 3.5L
ENVOY 05 Throttle Valve Assm; 4.2L
TRAILBLAZER 03-05 Throttle Valve Assm; (4.2L)
HUMMER H3 06
BRAVADA 03-04 Throttle Valve Assm; (4.2L)
ENVOY XL 03-05 Throttle Valve Assm; 4.2L
ENVOY 03-04 Throttle Valve Assm; (4.2L)
IMPALA 06 Throttle Valve Assm; 5.3L
ISUZU ASCENDER 03-05 Throttle Valve Assm; 4.2L
GRAND PRIX 05-06 Throttle Valve Assm; 5.3L
ENVOY XUV 04-05 Throttle Valve Assm; 4.2L
TRAILBLAZER EXT 03-06 Throttle Valve Assm; 4.2L
CANYON 04-05 Throttle Valve Assm; 3.5L
MONTE CARLO 06 Throttle Valve Assm; 5.3L
TRAILBLAZER 06 Throttle Valve Assm; 4.2L
RAINIER 04-05 Throttle Valve Assm; 4.2L
SAAB 9-7X 05-06 6 cyl
ENVOY 05 Throttle Valve Assm; 4.2L
TRAILBLAZER 03-05 Throttle Valve Assm; (4.2L)
HUMMER H3 06
BRAVADA 03-04 Throttle Valve Assm; (4.2L)
ENVOY XL 03-05 Throttle Valve Assm; 4.2L
ENVOY 03-04 Throttle Valve Assm; (4.2L)
IMPALA 06 Throttle Valve Assm; 5.3L
ISUZU ASCENDER 03-05 Throttle Valve Assm; 4.2L
GRAND PRIX 05-06 Throttle Valve Assm; 5.3L
ENVOY XUV 04-05 Throttle Valve Assm; 4.2L
TRAILBLAZER EXT 03-06 Throttle Valve Assm; 4.2L
CANYON 04-05 Throttle Valve Assm; 3.5L
MONTE CARLO 06 Throttle Valve Assm; 5.3L
TRAILBLAZER 06 Throttle Valve Assm; 4.2L
RAINIER 04-05 Throttle Valve Assm; 4.2L
SAAB 9-7X 05-06 6 cyl
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IIRC, the GTO came with the LS1 with a cable operated three bolt TB or the LS2 with a 90mm electronic throttle body (4 bolt throttle body, but I believe the bolt spacing is different from the LS4 throttle body). I don't believe either will work.
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From: Ohio
I figure I will add this to the Throttle Body trilogy. The following was episode 2, titled "You Can Make the Shoe Fit, But You May Not Be Able To Wear It Because of Wiring Differences"
https://ls1tech.com/forums/ls4-performance/843096-different-tb-topic-revisited.html
https://ls1tech.com/forums/ls4-performance/843096-different-tb-topic-revisited.html
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From: K.C.
