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Mar 16, 2008 | 07:50 PM

T-Pat

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Staging Lane

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From: Springfield, MO

TB question

Is there any way to tell the size of my throttle body because I don't think i have a stock size on my car?

Mar 16, 2008 | 11:22 PM

LS1crazy01

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From: ILLINOIS

Well I can tell you that a stocker is 75 mm. So messure it with a ruller or tape messure. Or snap a pic and post it and you would get a quick response.

Mar 17, 2008 | 11:01 AM

Bad Blue WS6

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From: Germantown Hills IL

Also,,if there is no ridge or lip where the TB meets your intake, either LS6, or LS1,,,then your a stocker,,,,maybe ported and/or polished.

Mar 17, 2008 | 05:34 PM

T-Pat

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Staging Lane

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From: Springfield, MO

i just don't know how to get back in the throttle boddy and really get a good ,measurement without eyeballing it mostly. i didn't kno if there was an easier way to tell. and what do you mean by a lip where the TB meets the intake? sorry if these are dumb questions by the way, ls1 newbie here.

Mar 17, 2008 | 06:49 PM

BlackDuk98

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From: Cleveland Ohio

You can use a snap guage or you could use a caliper at the back of the TB.

Mar 17, 2008 | 07:29 PM

mikenews

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is it a factory tb?

Mar 17, 2008 | 09:22 PM

BlackDuk98

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From: Cleveland Ohio

Quote:

Originally Posted by T-Pat

i just don't know how to get back in the throttle boddy and really get a good ,measurement without eyeballing it mostly. i didn't kno if there was an easier way to tell. and what do you mean by a lip where the TB meets the intake? sorry if these are dumb questions by the way, ls1 newbie here.

yes. Both a stock tb and either an ls6 intake or a a '97-'00 intake will be a 75mm opening. If there is a diff in the opening sizes, well....ya may have something diff.