MikeM

That's easy but that would never, ever be an option for me. Next to detergent oil and electronic fuel injection, that's one of the best things that ever happened to an internal combustion engine in my opinion.

Kerrmudgeon

You'll notice on your Edelbrock there is a blank where the oil fill tube can go. You just have to drill it out to use it since there's one on your block....could be your easiest solution to get air into the motor anyway. Then drill a hole in the intake straight through to the lifter galley behind the carb (NOT through a runner!), make a baffle for the inside of it, and run a PCV to the carb base of the intake.















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TCracingCA

I never understood the "waffle maker" designed plenum! If you cut the darn thing in half sideways, then you would probably be able to make nice ones for Breakfast!

GUSTO14

PML offers a wide variety of valve covers that can accommodate a PCV system for blocks that do not come with the normal provisions. They utilize an internal baffle that accesses a self contained breather (or can be plumbed to your air cleaner) on one cover and a PCV valve on the other cover. Here's a modified set with the Corvette script.

http://www.yourcovers.com/valve_covers_11026.php
They come in a variety of finishes including polished, natural or powder coated. These are slightly taller than the original Corvette finned covers (to easily accommodate roller rockers) and the casting is significantly more substantial than the originals. The covers are not inexpensive, but they are high quality and make it very easy to accommodate later blocks in early Corvettes... or any other vehicle you may have one in.

We had a customer with a '75 Corvette that insisted on using finned "Corvette" covers, a drop based air cleaner from a '67 and his Edelbrock intake (with no fill tube), and a Holley carb. The PML's made it possible and he can even pull his PCV valve and add oil using a funnel and an elbow.

Oh and they even have script Corvette covers for Big Blocks...

http://www.yourcovers.com/valve_covers_9096.php

Good luck... GUSTO

Al T

The Edelbrock does have the provision to drill for an oil fill tube........ or I could use this. I've had it sitting on a shelf for years.



Would I be able to put a set of carbs on it for a reasonable price? Seriously, that is probably not an option.
Likely drilling out the oil filler boss and adding the rear PCV is the best option. Leaving the OEM intake is another option but I already have the Performer intake (which is probably 20 pounds lighter) and a 600cfm Holley.

Allan

TCracingCA

Yes this would be far easier, but going thru the back of the block would be less visible, than thru the manifold. But drilling aluminum is far easier!

PS sometimes doing something the harder way, gives you more to talk about at the weekend car show!

Al T

This issue just raised another question. I've got a '64 GTO that I've currently got torn apart to do a frame replacement. It's got a 66 421 Tri-power engine in it (currently on a stand). I resealed it while it was out and the other day I was looking at it and realized there is no ventialtion set up as there is with a small block. Oil filler on the driver's side valve cover.... that's it, no road draft tube etc. How does this engine ventilate without a PCV sytem or road draft tube??



Thanks in advance.

Allan
Thanks.

JohnZ

Got a Pontiac Shop Manual or a Pontiac Assembly Manual?

wilcar

Pontiacs have a valley pan under the intake and the pcv goes into a rubber grommet in the front of the pan.

Al T

Thanks!