Vacuum port on SBC air gap. - Team Camaro Tech
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post #1 of 10 (permalink) Old Mar 2nd, 03, 09:03 PM Thread Starter
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I'm sure someone has an easy fix for this problem. I'm using a edelbrock air gap intake on my 355, using a holley 670 for fuel intake. The vacuum port for the power brakes is located under the rear bowl of the carb and there is not enough room to mount the carb without adding a spacer. Any suggestions?
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post #2 of 10 (permalink) Old Mar 2nd, 03, 09:25 PM
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I am guessing that most will say to add a spacer or dump the power brakes.

The question is: Do you have room for the spacer?
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post #3 of 10 (permalink) Old Mar 2nd, 03, 11:15 PM Thread Starter
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It's hard to say if the hood will fit yet. The front end is off for painting. The hood is a factory cowl induction hood.
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post #4 of 10 (permalink) Old Mar 3rd, 03, 03:16 AM
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Did you buy the low profile fitting from Edelbrock? It worked for me with a 650 double pumper, and Performer RPM. I didn't need to use a spacer.
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post #5 of 10 (permalink) Old Mar 3rd, 03, 03:25 AM
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I used a 1/2 aluminum 4 hole spacer with rpm air-gap. I am using a Holley 650HP and still have plenty of room with cowl hood. Able to use 4" air filter also.

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post #6 of 10 (permalink) Old Mar 3rd, 03, 11:22 AM Thread Starter
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Thanks for the help guys. I'll try the 1/2" spacer. The fitting is flush with the intake.
By the way, did you lose anything with the spacer, some reports say that torque is lost with the addition of the spacer? [img]graemlins/thumbsup.gif[/img]
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post #7 of 10 (permalink) Old Mar 3rd, 03, 04:45 PM
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Can't help on the Holley, but my Demon worked fine and the whole thing fit under the stock SS hood (barely) with a 2" filter and drop base air cleaner.

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post #8 of 10 (permalink) Old Mar 4th, 03, 02:13 PM
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The Edelbrock low-profile vacuum fitting is a simpler fix; I've used them on many cars. [img]graemlins/thumbsup.gif[/img]

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post #9 of 10 (permalink) Old Mar 4th, 03, 02:32 PM
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Another simple fix would be to put an allen head pipe plug in the manifold, and use the big vac port from the Holley as the vac source for your brakes. I think it's on the pass side of the Avenger. You coud use a tee in that line to go to your PCV as well. I did that and it worked great.
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post #10 of 10 (permalink) Old Mar 5th, 03, 08:53 AM
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I just plugged the fitting on the intake and put a Tee on the fitting from the carb. I ran one side of the Tee to the brakes, the other side to the PCV. Worked fine.
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