Maybe it's my old eyes but in the illustration KULTLUZ posted it looks like the one for the 2V and 4V are facing in opposite directions. As far as I know the valve only works in one direction?

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...you know something?

This ILL is showing the carb spacer needed and it was most likely phenolic on top of that. I don't have a TRUCK MPC for the period but if you GOOGLED the PN, I bet one would show.

Supposedly, FORD used a unique 4V intake for the 292 4V Truck engine but in most instances I have read claim it was an ECZ-B.

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There are several alternatives- Here is one. It needs to be baffled.

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^^^I've seen that photo before when I researched a PCV modification but saw would be extremely difficult since it required drilling the block. You would certainly need to do it on a bare block that could be cleaned of the metal shavings. Baffling it would be another challenge.


~DJ~ AKA "Bleach"
1956 Ford Fairlane Town Sedan 30K original miles

I think the easiest easy out of it now that you actually have the CASCO spacer itself is to plumb in a double nipple valve as shown below. The 6A665 adapter moves the hose around the rear vacuum inlet on the rear of the intake. Just try to mount the valve vertical @ the bottom and not horizontal towards the spacer nipple.

If you notice on the 4V install, there is a metal tube that allows rising and cooling of the vapors and allows them to drop towards the valve instead of being ingested.

I can't read the maker of the valve but try to buy a quality one such as STANDARD, NIEHOFF or AC DELCO.

Mount the OEM phenolic spacer above the alum one and you should have it.

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I'm not sure of I want to add the phenolic spacer. I want to try it out as I currently have it. Would there be that much extra heat getting to carb using the Casco spacer alone?


~DJ~ AKA "Bleach"
1956 Ford Fairlane Town Sedan 30K original miles

No problem. Try it and see how she does, If you experience cold hard start or fuel percolation, maybe consider one then.

FORD used the phenolic spacer on the 57 with the FORD and CARTER carbs and an aluminum spacer with the HOLLEY.

You shouldn't have to worry about hood clearance as it is a '56 (high hood) and you are using a later low profile ACL.

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I had cold start problems even with the phenolic spacer. I'm in the habit of pouring a little 2-stroke gas down the carb before I start it.  I've actually done that with most carbed vehicles I've recently owned.
I'm not worried at all about the hood clearance. I'm real anxious to get this little project done.


~DJ~ AKA "Bleach"
1956 Ford Fairlane Town Sedan 30K original miles