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90mm vs. 92mm Throttle bodies for 400+CI LSX

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Old 07-25-2009, 08:17 AM
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Default 90mm vs. 92mm Throttle bodies for 400+CI LSX

Is there any gains in going 92 over 90? I have read and from what i read the intakes yield no gains so im wonderring about the TBs.

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Old 07-25-2009, 08:54 AM
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I don't know if I'd go to a 92 from a 90 unless I got some great deal or something. Maybe a 90 or 92 to a 102 might be worth while, with the larger intake of course.
Old 07-26-2009, 06:25 AM
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What about porting your 90mm throttle?
Ive heard the gains from that can be quite good.
I took to mine with a dremel and file. There is some significant meat that can be take out in front of the blade primarily as well as smoothing the hard lines behind the blade.
You just need to be careful not to damage the area where the blade seals hard to the throttle body.




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