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TB gaskets - 2 different gaskets

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Old Jan 9, 2013 | 09:45 PM
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TB gaskets - 2 different gaskets

I just noticed there are 2 different TB gaskets. My new TB didn't come with a gasket, so I dug up one from my pile of parts. And now my car will not idle.
one has a triangle, and the other is more open. It's obviously for IAC air.

I'm going to try swapping gaskets, and see. But certainly I am not the only one who ran into this problem.

Is any one more familiar with this ??
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Old Jan 9, 2013 | 10:08 PM
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TB gaskets - 2 different gaskets

I think the triangle one is for the older TPIs but I have used both with no problems.
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Old Jan 10, 2013 | 06:42 AM
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Re: TB gaskets - 2 different gaskets

Seems the Holly TB is very picky about which gasket is used, as it has different idle passages than a stock TB.
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