Y block intake port matching

[Bruce Compton, Canada]

Looking at aftermarket aluminum intakes for the Y block that "fit" everything from '55-'62 , 239"-312" engines, why are there several different listings for intake gaskets (1954,1955-56 and 1957-62 plus a difference for 2V ad 4V). Also, if the heads are interchangeable left to right, why are there two different part numbers for left and right intake gaskets?? I hav'nt messed with Y blocks for 40 years so I'm a little foggy about these details. What does not match and what does??? Thanks : Bruce

[parklane]

Bruce, I do know that a intake for a 272, 292, 312, doesn't seal too well on a 239/256, so the aftermarket aluminum intake will probably have the same problem areas. As far as different part no. for the intake, I have no idea.

[Daves55Sedan]

Somebody correct me if I am wrong here on any of this, but I believe the 1954, 239 Y-block intake and heads are smaller than the later years and are NOT interchangeable.
Beyond that, the 292 truck intake gaskets are different from the car engine intake gaskets but they ARE interchangeable with the 272, 292 and 312 engines, I think. The only difference in the truck intake gasket is that is has a smaller opening at the heat riser passage, but mating between intake and heads is identical.
There is no difference between the left and right intake gaskets. They are identical. The exhaust manifold gaskets are also identical from side to side, but they have aluminum-facing on one face of each gasket. You want to install the aluminum-faced side outward on each.
2V = (2) venturi intake. 4V = (4) venturi intake. I doubt there is an aftermarket aluminum 2V intake available. They probably have a 4V and possibly a dual 4V for hot-rodders. Pick the poison you want to use. It does not make any difference which carb you plan to use. The mating between intake and heads is the same as I described above.
Sorry, I don't know that much about the Mercury 256, but it looks to me like a 272 with a little smaller bore maybe. Ford used the little 239 in trucks from '54 thru '55, while the 239 was discontinued in cars at the end of the '54 model year. I think they started using the 292 with a steel crank in trucks from '56 thru '64. 1964 was the last year for the y-block engine.

[JeffB2]

Back when they produced aftermarket Y-Block intakes there were actually three styles one for the 239-256,one for the 272's(small port)1955-56 and one for(large port) 1957 and later 292-312's as the cubes increased so did port sizes.Here is a chart http://victorylibrary.com/mopar/edel.htm

[bjmayberry2]

Just ran across this old but informative article.

http://www.oocities.org/yblockhead/HotRodding292.html

BJ

[Y-Blockhead]

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Originally Posted by Daves55Sedan

There is no difference between the left and right intake gaskets. They are identical.

That's incorrect, there most certainly is a difference between the right and left intake gaskets. try laying one on top of the other. Notice the center exhaust crossover is aligned but the ports and water passage are not.

[Hot Rod Reverend]

ditto on Y-blockhead's information. just got out a new set and he is correct...

[darrell]

i have often seen people mix up intake gaskets and end with a giant vacuum leak.gaskets are interchangeable from 55 up even though ports sizes changed over the years.both 239 and 256 in 54 were odd balls but the 239 and 256 for 55 were the same as later years.these were all truck engines.

[Y-Blockhead]

Originally Posted by bjmayberry2

Just ran across this old but informative article.

http://www.oocities.org/yblockhead/HotRodding292.html

BJ

That's an interesting article. Can't say I ever remember seeing a set of ECZ-E or ECZ-F heads?

[Ole Don]

The Hot Rod Reverend has some pictures I sent him, (I'm not smart enough to post them myself). Maybe if we ask nicely he will post the picture showing how I mark the heads and manifolds to match gaskets. Its easy to do, and makes free horse power.

[bjmayberry2]

Originally Posted by Ole Don

The Hot Rod Reverend has some pictures I sent him, (I'm not smart enough to post them myself). Maybe if we ask nicely he will post the picture showing how I mark the heads and manifolds to match gaskets. Its easy to do, and makes free horse power.

Would really like to see your marking procedures. Never saw them posted

[bjmayberry2]

Ole Don
E mail sent.

[scicala]

Originally Posted by Y-Blockhead

That's an interesting article. Can't say I ever remember seeing a set of ECZ-E or ECZ-F heads?

I agree, a very nice article, but I also agree there must be some kind of typo with the ECZ-E and ECZ-F heads. No such thing. He's referring to them as big valve heads for '57 thru '59. There were actually no heads that had the casting number end with an "E" or "F" in any model year except the very rare 1957 supercharger head (EDB-E).
All big valve heads in '57 and part of '58 for cars were ECZ-G, no mater if they were on a 272, 292 or 312.

[JeffB2]

Here is some real Y-block tech if you got deep pockets:http://www.mustangandfords.com/techa..._engine_build/

[zoegrant]

B.J. I really enjoyed reading this y-block article...thanks....J in CT

[Hot Rod Reverend]

Whoops! Just now saw this posting and call out for me to show the photos that Ole Don sent me sometime back. Sorry about that. Let me see if I can find them.

[08jmateo]

I have a Edelbrock 2 4 bbl aluminum intake that can be installed on 272, 292 and 312
If interested let me know