FIRST bellows?
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Junior Member
Joined: Jul 2011
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FIRST bellows?
Hello for those of you running a FIRST intake with MAF what did you do for the air bellows from the MAF to the Throttle body of the FIRST? I have an '87 vette and the throttle body on the FIRST is a bit larger than my old one. IIRC 72mm inside and a shade over 100mm on the outside.
Senior Member
Joined: Jan 2010
Posts: 820
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From: Ontario
Car: 1987 Trans am GTA
Engine: D1sc 383
Transmission: t56
Axle/Gears: 4.11
Re: FIRST bellows?
Hello for those of you running a FIRST intake with MAF what did you do for the air bellows from the MAF to the Throttle body of the FIRST? I have an '87 vette and the throttle body on the FIRST is a bit larger than my old one. IIRC 72mm inside and a shade over 100mm on the outside.
I used 3 and 4 inch silicone tubing. It's the same tubing used for power adders.
I am pretty sure the stock tube will fit on the FIRST tb, its a tight fit, and a different shape, but can be squeezed over the opening.
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