Fast 78

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May 11, 2007 | 08:24 PM

JGA

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Fast 78

I can buy a used FAST 78 from a buddy for about the same price as an LS6 intake. Can I use the FAST with my stock TB or do I have to buy a 4 bolt TB?

May 11, 2007 | 08:34 PM

MS3Z

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From: Indiana

You need a 4 bolt TB

May 11, 2007 | 09:26 PM

lgobraves

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Quote:

Originally Posted by MS3Z

You need a 4 bolt TB

That is incorrect

I am have a 78mm fast intake and stock ported tb and it works great....been using it for over a year now.

May 11, 2007 | 09:34 PM

chuckyt1

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Yea, stock throttle body, or you can hog it out to 85mm. Buy a Pro Products 85mm throttle body for 200 bucks from Byun and end up with a hell of a deal on a Fast 85/85.

There's a great write up on here where someone did this.

https://ls1tech.com/forums/showthrea...t=fast+85%2F85

May 11, 2007 | 10:13 PM

JGA

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I can get it for 450. I think I will jump on it.

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