'72 K5 with new GM performance block. Can I tee PCV vacuum and brake assist off of carb?

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'72 K5 with new GM performance block. Can I tee PCV vacuum and brake assist off of carb?

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Chevrolet Forums >> Chevy Trucks, Vans & SUV's >> K5 Blazer >> '72 K5 with new GM performance block. Can I tee PCV vacuum and brake assist off of carb?

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'72 K5 with new GM performance block. Can I tee PCV vac... - 7/9/2007 12:01:03 AM

jeffwsi

Posts: 3
Joined: 7/8/2007
Status: offline

Hello,

I just dropped a new GM performance block into my '72 K5. What a pain, getting all the new fangled stuff matched up to '72 chassis.

I have one problem now. I need vacuum for the PCV port on the valve cover and another vacuum for the vacuum assisted brakes. The Holley 600CFM carb has a single vacuum port.

Is it possible to tee that vacuum off of the carb and run both the PCV and brake off of the same vacuum port?

Thanks,

Jeff

Post #: 1

RE: '72 K5 with new GM performance block. Can I tee PCV... - 7/16/2007 2:48:16 PM

dailyk5

Posts: 2
Joined: 7/15/2007
Status: offline

well, ive done that on my 75 blazer and i haven't had a minutes problem with that. Although I heard you're not supposed to, mine's been like that for about three years now. Worked for me.

(in reply to jeffwsi)

Post #: 2