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Throttle Body size?

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Old 04-09-2009, 05:19 PM
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Default Throttle Body size?

Yesterday I measured my TB and I don't think that I measured my TB size wrong. I measured across the middle from the air lid size and took the inches and converted it into MM. I came up with 85 it is on the stock ls6 manifold is that possible and did I measure it right?
Old 04-09-2009, 07:07 PM
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i think they are 75mm...take a pic of it.
Old 04-09-2009, 08:02 PM
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You have to measure the TB blade to determine if it is a 75 or 85mm TB.
Old 04-09-2009, 08:23 PM
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So measuring the blade would that require having to disassemble the throttle body?
Old 04-09-2009, 09:03 PM
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Originally Posted by BigBirdLS1
So measuring the blade would that require having to disassemble the throttle body?

No just push it open and measure with tape measure
Old 04-09-2009, 09:38 PM
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Just measure the rear opening, not the front. Itll be close enough.




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