What is this on this carb?
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Joined: Jul 2006
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Car: 1987 Pontiac Trans Am
Engine: 350 Vortec
Transmission: 700R4
Axle/Gears: 3.42
What is this on this carb?
What is the port in between the AV flap in this pic? Not the one on top, but the horizontal one in the back?
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Joined: Sep 1999
Posts: 7,072
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From: Philly, PA
Re: What is this on this carb?
Clean air port. Used to be used with old hot air choke systems as the source for "clean" air to be fed through the choke heating system. It is open to the area behind the air valve flaps- no vacuum.
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It was also used in the early 3rd gen years for the EGR solenoid clean air source (my '82 system used it, but the '86 did not).
Thread Starter
Member
Joined: Jul 2006
Posts: 304
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Car: 1987 Pontiac Trans Am
Engine: 350 Vortec
Transmission: 700R4
Axle/Gears: 3.42
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