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LS1 and LS4 Throttle body differences.

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Kansas GXP

Post subject: LS1 and LS4 Throttle body differences.

Posted: Wed Sep 23, 2009 11:32 am

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Does anyone know if there are any or major differences between the LS1 and LS4 throttle bodies?
I have a little experiment I would like to try, but first need to see how close the LS1 and LS4 TB's are to eachother.

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BumpStick

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Wed Sep 23, 2009 2:43 pm

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Well there is one BIG difference.... LS1 TB is cable operated and LS4 is Drive-By-Wire. As for the sizes, i dont know, I'd actually like to know that one myself.... Where you going with this? You got my attention

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Quote:

Originally Posted by peter@aps
F body twin turbo car will be in reality traction limited not power limited.

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hotrodolds

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Wed Sep 23, 2009 2:45 pm

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But, assuming sizing is the same or similiar, couldn't you pull the cable apparatus off of an LS1 for the LS4? Or adapt the LS4 electronics to the LS1?

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Kansas GXP

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Tue Sep 29, 2009 1:30 pm

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I am actually wanting to know, because I was looking for a TB spacer for our cars. I haven't found anything yet, and don't want to waste too much time looking, if the LS1 and LS4 tb's are the same size or bolt pattern.

I do believe that the Silverado 5.3 TB and the LS4 are the same bolt pattern, but bigger bore, and therefore may also be adapted to the LS4.

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JC05GXP

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Tue Sep 29, 2009 7:02 pm

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The ones for the Trailblazer/Envoy will fit ours. I think its the 4.2L I-6. Here's a link to one http://www.summitracing.com/parts/AID-200-586

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BumpStick

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Tue Sep 29, 2009 10:29 pm

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JC05GXP wrote:

The ones for the Trailblazer/Envoy will fit ours. I think its the 4.2L I-6. Here's a link to one http://www.summitracing.com/parts/AID-200-586

Dang do they have any that arent so expensive?

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Quote:

Originally Posted by peter@aps
F body twin turbo car will be in reality traction limited not power limited.

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JC05GXP

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Fri Oct 02, 2009 7:16 pm

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Well, this one is a bit cheaper, not too much http://www.summitracing.com/parts/HAM-3 ... ubmodel|LS

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DP 08 GXP

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Fri Oct 02, 2009 7:36 pm

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JC05GXP wrote:

Well, this one is a bit cheaper, not too much http://www.summitracing.com/parts/HAM-3 ... ubmodel|LS

thats the one i got.

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BumpStick

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Sun Oct 04, 2009 9:59 pm

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Some anyone for a TrailBlazer 4.2 will work then... Time to go searching.

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06 Sport Red Metallic grand Prix GXP [Magna Flow, CAI/K&N, SuperChips Cortex]
04 Black CBR 600RR [Leo Vince, PCIII, K&N]

Quote:

Originally Posted by peter@aps
F body twin turbo car will be in reality traction limited not power limited.

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Panther427

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Sun Oct 11, 2009 1:57 pm

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LS1 TB use 3 bolts to attach to the intake. LS4 use the newer 4 bolts to attach to the Intake.

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Kansas GXP

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Thu Oct 15, 2009 11:03 am

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So then the LS1 TB takes the same bolt pattern as the 5.3L from my truck as well. Wonder what the diff. is between them. Maybe the LS1 TB is bigger for better flow.

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Panther427

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Sat Oct 17, 2009 7:23 am

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Im not certain but i think the 3 or 4 bolt mounting pattern may be related to the style of throttle. Cable or drive by wire. Though im not sure.

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Astralketamine

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Mon Jul 04, 2011 12:47 am

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I think this would work, but not sure
http://rebelautoworxs.ca/index/index.ph ... ducts_id=7

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bigdog9191999

Post subject: Re: LS1 and LS4 Throttle body differences.

Posted: Mon Jul 04, 2011 6:10 am

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