ReallyWildStuff

Before I buy those fancy notched VCs I wanted to seek opinions : My overall plan is as noted here:

Question: "The '68 H/O had PCV in the passenger's side valve cover, and a single valve cover breather in the driver's side", is that correct?"

What I want to do is follow the '68 H/O setup re: OAI & carb plumbing. I think '68 & '69 W-25 setups could be just as appropriate to copy but I don't know how they compare to '68 H/O. This approach may allow me to source specific parts easier.

Question: Are there any known operational problems running dual-snorkel under the bumper OAI & PCV on the valve cover ("excessive pressure" or "blow by" or "something")? I notice that the factory eventually moved away from that setup with the demise of under-bumper scoops.

This is all happening with Edelbrock Performer intake that's already installed (fun fact: no boss for drilling the PCV into the intake next to the water hose clamp on this Edelbrock piece) so "factory correct a-la '68 455" is obviously not an Achievable Objective even past my blue paint and "regular" oil fill tube...a factory aluminum intake would be just what the Dr. ordered re: building an engine made out of all "Best Olds OEM parts" but that's not in the cards right now.

I got distracted in my research by EDIT "V-code" OAI setups that use two valve cover breathers and the intake-mounted PCV. I did put a Mondello "turkey tray" replacement underneath the intake and supposedly that prevents excessive oil pickup by an intake-mounted PCV...but again no boss on this intake so not going that direction.

I plan to create a "Major Build" post so I can consolidate my questions and document what's going on in one place. As it is I've been asking questions one-off and I appreciate the help I've been getting.

Thank you,

Brian in Houston

joe_padavano

I think you're waaaay overthinking this. Use the stock 68 setup. All 68-69 W-30s and 31s were configured the same as the 68 H/O (except, of course, the swapping sides for the PCV and breather tube). I don't know what this has to do with the valve covers, however. Notched or not, they still have the D-shaped cutouts for the breather or PCV grommets.

ReallyWildStuff

I am "checking my work" only re: the final product coming together the way I want, i.e. "accurate" to something I don't have access to.

You _are_ in fact the _head_ of the Truth Decay Enforcement Division, yes?

joe_padavano

Sorry, but I guess I didn't follow your first post with the nested quote. I got the impression you are fabricating some sort of dual-snorkel air cleaner for a 1977 B-body? What am I missing?

ReallyWildStuff

yes, that is what I am doing, and i want to use as many OEM parts as possible / look as stock as possible

this will be a functional analogue of the air cleaner on a '68 H/O (and as you said W-30 & W-31...I misspoke with "W-25", although those may be similar, I don't know.).

The stock '77 air cleaner has "one long snorkel on the driver's side"; the '68 has "two short snorkels". I don't want to pay for a '68 piece (I'm also running HEI, so running the older air cleaner would only introduce more hood clearance problems)...so I'm looking ahead to whether I will add a 2nd long snorkel to the passenger side of the '77 air cleaner...

or if instead a shorter one would be better re: clearing the A/C compressor...

which would end up looking like a mirror-image of the factory V-code setup I mentioned (although that had thru-the-hood OAI), which has dual breathers & PCV in the intake.

Confused? You won't be after the next episode of Soap.