3 outlet Intake Manifold Port

[Vetteman61]

Hello all,

I can't seem to find a definitive answer about this online, perhaps because I don't know the correct terminology to search with.  On the back of our '67 Camaro (RS, 327, powerglide, Power steering, power brakes, AC) there is a vacuum port with 3 connectors:  Transmission, Power brakes, and another line that is plugged.  I'm curious what the 3rd (middle) connection is for.  The only clues I have found online is that perhaps someone put a '68/'69 port on the intake and the middle port was for the vacuum headlights (which '67 of course doesn't have).  My suspicion was that maybe it went to a vacuum canister for the AC system, but I'm not sure if '67 camaros were supposed to have them; our car does not.

Thank you,
Brandon

[x66 714]

I'm pretty sure the last one is for the a/c...Joe

[Petes L48]

If you have a 67 AIM look at UPC J50 Sheet A3.  J50 p/brakes, C60 AC, M35 auto.  67s with AC had the vacuum cannister in the upper rear of the driver fender (UPC C60 Sheet E2 in the 67 AIM)

[Vetteman61]

Thanks for the replies.  I don't have the AIM.  It seems our car is missing the vacuum canister.  Thanks for the information.  Perhaps I can find more info now by looking up vacuum canister and maybe find some pictures also.