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Old 02-25-2009, 10:26 PM   #1
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stock tb size and cfm tb ?

ok i heard the stock tb size for the svtf is 66mm at its widest point.
and the cfm throttle bodies arent measured at the same point.
what is the measurement of the widest point on the cfm 67mm tb?

please explain in best of detail as possible.


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Old 02-26-2009, 12:56 AM   #2
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Saw your post on the CFM product FAQ thread. Even if the widest point of the 67mm throttle body is still 67mm (in reality it is probably larger) it is still going to flow better then a 65mm with a wide point of 70mm. Air will always be restricted by the smallest diameter point on the TB... So a 67mm will flow better than a 65mm and so on and so forth...
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Old 02-26-2009, 01:20 AM   #3
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I had one of the cfm throttle bodies on my car in the past. It is a good performance mod. It will get you some small hp gains and better throttle response. It's less restrictive than the factory tb. It doesnt have a narrow point. Get yourself one, you'll like it.
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Old 02-27-2009, 12:16 PM   #4
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IIRC, the measurement of the stock TB is actually the outside diameter rather than the inside diameter. A side by side comparison and it's clear the aftermarket 65mm tb's are larger.
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