No PVC, no place to add 3 needed. - Chevelle Tech
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  • 1 Post By Busted Knuckles
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post #1 of 6 (permalink) Old Feb 13th, 17, 3:01 AM Thread Starter
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No PVC, no place to add 3 needed.

OK,

I find myself once again turning to the forum folks for answers. Stroker motor 496 BBC Gen 6 version... Carb (4150 style), supplied by TRERacing engines, as are the fabricated valve covers. Using a Victor Jr. intake....

Not one place on the intake, carb or V covers to hook up our 3 vacuum source points needed. PVC needs one, vacuum advance at the distributor needs one and and then the power brakes....

We added a 1 inch spacer to the carb, drilled and tapped for a 3/8" hose barb that got our PVC hose connection a place to plug in carb end -but not sure where on the valve cover on where to drill the hole drivers sid to add the PVC assembly and grommet. We did purchase the Moroso grommit that is supposed to prevent oil being pulled into the PVC valve, but from what we've read it the grommet doesn't work. Just looking at other engine installs they seem to be every where. Our V covers have nothing to act as a chanber, just a blank cover ready ro the grommit to be intealled.

So plan is to locate the hole in the v. cover to a location between the push rods and rockers nnd hope for the best. That still leaves us with the need for two more hose connections for the power brakes ande dist needs. Thought about using a fitting to allow all three needs to be handled with the one spacer plate hole we added with one of those t-type, but not sure that each item need would be answered by this one location. Not to keen on drilling 3 holes in the spacer plate

Sketchy drilling the carb base plate or metering block to add the two still missing vacuum sources.

Any suggestions on the proper way to add the 3 vacuum ports locations we need?

Thanks in advance,
57Chevy
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post #2 of 6 (permalink) Old Feb 13th, 17, 6:56 AM
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Re: No PVC, no place to add 3 needed.

Whats wrong with putting the holes all in the spacer plate?

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post #3 of 6 (permalink) Old Feb 13th, 17, 7:29 AM
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Can you drill any holes into lower rear side of intake for actual pcv. that way if you change carb spacers your not having to Make new holes etc..
You can also tie your pcv system into your exhaust. Jegs/summit have a Lil kit you can buy to properly complete the pcv to exhaust setup (common on drag cars)t at the end of the collector and that works sufficient enough and way better then nothing

If drilling.holes in valve covers unbolt and see where the room is, factory gen 6 pcv is center drivers cover and on passanger side ftesh air is between 6 and 8 I would also suggest getting baffles to install inside valve cover and a catch can to keep intake oil/sludge free.
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post #4 of 6 (permalink) Old Feb 13th, 17, 8:02 AM
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Re: No PVC, no place to add 3 needed.

I assume you're talking about a PCV rather than a piece of plastic plumbing line?
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post #5 of 6 (permalink) Old Feb 13th, 17, 8:54 AM
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Re: No PVC, no place to add 3 needed.

Quote:
Originally Posted by Busted Knuckles View Post
I assume you're talking about a PCV rather than a piece of plastic plumbing line?
Amen.

PCV = Positive Crankcase Ventilation

PVC = Poly Vinyl Chloride
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post #6 of 6 (permalink) Old Feb 13th, 17, 4:03 PM Thread Starter
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Re: No PVC, no place to add 3 needed.

Yes' another famous typo....

Need to add PCV valve drivers side, currently plan to run a 3/8" line to back middle of carb spacer. Just need to find the "right" spot to place the hole in the fabricated cover so the minimum amount of oil finds it's way into the valve.

Really have no way of attaching a baffle inside the cover, so would rather just run an elbow shaped PCV -the internally baffled PCV type and hose.

Thought maybe the carb has a place were a small additional PVC line could be added for dist. and brake booster, like one cast in but not drilled.

Seems to me using one vacuum source for all three might uses might result in not enough signal being supplied to one or another at certain throttle positions.

Thanks!
57Chevy.



Quote:
Originally Posted by blue_69_malibu View Post
Amen.

PCV = Positive Crankcase Ventilation

PVC = Poly Vinyl Chloride
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