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Thread: 90mm F.A.S.T Throttle Body
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07-09-2009, 12:16 PM #1
90mm F.A.S.T Throttle Body
Anyone know if a 90mm FAST TB will bolt up to a stock LS1 intake on a 98 T/A. Also what is the stock opening on the LS1 is it 78mm? Is an LS6 intake 85mm?
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07-09-2009, 01:04 PM #2
No. FAST is a 4 bolt TB opening.
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07-09-2009, 02:19 PM #3
What about an LS6 intake? Will it bolt up to that or is that the same as a Ls1
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07-09-2009, 03:03 PM #4
Same. And if Im not mistaken... the 78mm and 85mm numbers your confusing is the difference between The LS1 Mass Air Flow and the Truck MAF.
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07-10-2009, 12:33 AM #5
the ls1 and ls6 tb mount is pretty mych identical with a 3 bolt mount.
the 90, and 92mm tb uses a 4 bolt pattern
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07-10-2009, 07:30 AM #6
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