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LS2 90mm Electric Throttle body to replace 78mm

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Old 09-09-2007, 07:20 PM
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Default LS2 90mm Electric Throttle body to replace 78mm
Does anybody have any information on replacing the 78mm tb with a 90mm.
My truck is a 2003 and the plugs are different on the two tb's. There is also a different number of pins in the two plugs. Six on the ls2 and eight on the existing. Any info will help greatly.
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Old 09-09-2007, 07:24 PM
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what other mods do you have to support this TB? what intake manifold do you have? any other mods besides boltons?

i dont know the answer to your questions but unless you have extensive mods and a 90mm inlet on your manifold, you dont need it
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Old 09-09-2007, 07:43 PM
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I am running a 427 with l92 heads and truck intake.
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Old 09-09-2007, 11:06 PM
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youll need a ssr intake or you can convert to a car style or vic jr. pm drx for a harness adaptor .
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Old 09-10-2007, 01:04 AM
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I don't believe that it'll work on the regular truck intake. It has to be an intake off of a SSR/TBSS that already has an opening big enough for the 90mm tb.
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Old 09-10-2007, 05:47 PM
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Sorry i didn't clarify earlier. The intake is a truck intake from a 2007 escalade which has the large opening.
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Old 09-10-2007, 06:49 PM
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you need to either get a harness from speartech for the 6pin to 8pin and a 2002 tac module and some guys have got the harness from drx.
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Old 09-11-2007, 11:33 AM
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Dr X harness is the way I have gone, much easier than the Speartec/TAC module way IMHO.
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Old 09-13-2007, 08:03 PM
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Sounds good. I talked to DrX and he was a lot of help. Probably going that route.
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Old 10-22-2007, 09:23 PM
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Who is DRX?
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