A.I.R. tube nut size???
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Joined: Oct 2015
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From: U.S.A.
Car: 1990 Trans Am
Engine: 383 stroker
Transmission: 700r4
A.I.R. tube nut size???
What size are the nuts that screws the air tubes into the exhaust manifolds, 15mm seems too big and might strip and 9/16 won't fit. What size is it? Please help! It's a 350 TPI L98.
Joined: May 2008
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From: Viersen, Germany
Car: 85 Iron Duke, 88 GTA and 92 TA
Re: A.I.R. tube nut size???
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Joined: Aug 2002
Posts: 223
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From: The Desert
Car: 1984 Trans Am
Engine: Lg4
Transmission: 700R4
Axle/Gears: 3:23
Re: A.I.R. tube nut size???
Joined: Jun 2001
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From: DC Metro Area
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
Re: A.I.R. tube nut size???
They are actually 1/2" - 20 straight threads, I use some 1/2"-20 alan head set screws to block them off, but 1/4" NPT plugs will work (the tapered thread is the same but will bind up in the threads when you get it threaded in far enough)
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