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[Z06] OEM throttle body size?

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Old Jan 1, 2015 | 02:35 PM
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Default OEM throttle body size?
For whoever has time please measure your throttle body and tell me what size you come up with. I just measured mine and it is just shy of 4" O.D. Wondering if it's been swapped. I'm making a hard pipe intake for it but having clearance issues. Mines a 2004.
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Old Jan 1, 2015 | 04:59 PM
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Originally Posted by c5maniac2
For whoever has time please measure your throttle body and tell me what size you come up with. I just measured mine and it is just shy of 4" O.D. Wondering if it's been swapped. I'm making a hard pipe intake for it but having clearance issues. Mines a 2004.
Stock throttle body is 78mm.
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Old Jan 1, 2015 | 05:34 PM
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It looks very original, even has the red LS6 tag on top. I guess the measurement is taken at the blade and not the outter opening?
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Old Jan 2, 2015 | 03:34 PM
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From: Alamosa CO
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Originally Posted by c5maniac2
It looks very original, even has the red LS6 tag on top. I guess the measurement is taken at the blade and not the outter opening?
That is correct.
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Old Jan 3, 2015 | 05:59 PM
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IIRC the stock throttle body OD is 3.75" and the 78mm is the TB blade size as stated above.

S
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Old Jan 4, 2015 | 03:18 PM
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From: Wylie TX --> Less is More, except under the hood !
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Here is a pic i took comparing the stock LS6 78mm to the LS2 90mm.



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