Hot Rods school me on y block intakes

was listening to a person speak about y blocks having a different port configuration according to year manufactured, any truth, or just talk i have a 57 272 and would like to buy a 3x2 intake for it but wanted to make sure which one actually fits this application. thanks in advance hot rust

 

The Edelbrock 573 ('57 3 carb) tripple is probably the best Y-block 3X2.. It matched the better/improved '57 ports, while two previous Edelbrock tripples were made for the earlier '54-'56 heads.

 

Try to stay away from the Offehauser 3x2, unless you are just going for looks!It is the worst performer of all the Y-block 3x2s set ups!






Bones

 

The yblock has stacked ports on all years I even ran a 392 intake on a 239 once.

 

so in 57 they redesigned the ports in the heads. will look for one of the edelbrock 573 intakes. thanks guys appreciate it.

 

I ran an Edelbrock 573 on my 56 292 for a while right up until I got tired of fighting three old 94 carburetors.

 

The right 4-barrel intake and carburetor will perform better than 3x2 and be easier to live with. Check out Ted Eaton's manifold tests on eatonbalancing.com.

 

He means 292, not "392."

 

Ya my fat fingers trying to type on my phone

 

I never bothered to learn to read braille, because my fingers don't work any better than my eyes.

 

The 57 272 MAY have the port size of the 55-56 heads. If you can get the 56 one even if you have the larger head ports it will perform as good if not better than the larger 357. I have always used the gaskets to blend the smaller intakes to the larger opening. This makes a slight vacuum effect helping low end torque and street performance.
When I see dyno tests charts I look at 1500-3000 where 99.9% of my driving is done. If I see 5-10 lbs of added torque there, it’s the one I choose.

 

Before you start spending money, do a little research. Starting with the heads you have. Bottom of Mummert’s site has a lot of info, including casting numbers, years, nominal chamber volume for heads,etc.

http://www.ford-y-block.com/

Knowing what you’ve got will play into the worth of the manifold you buy. Blacktie’s link to Ted Eaton’s site is another must read, but remember he’s testing on a pretty stout larger displacement engine. But there’s a ton of info there, too.

Make sure it a 57 distributor, and both the centrifugal and vacuum advance are working.

 

throwing out a pic of marine intake for those who have not seen one

 

Three deuces for looks, 4 bbl for performance.
Just my opinion.

 

Dual quads for a bigger WOW look.!

 

I never heard of a '57 272. '56 was the last 272 as far as I know. I have a 272 in my '55 Ford.

 

1957 Tbird 292 and 312 engines both came with the big valve

Nope. 57 was the last year for the 272, and it utilized the same big-valve heads (1.92 intake "G" heads as the 292 and 312. Want verification? Go to ford-y-block.com. Scroll down and click on "Technical", and look at "Cylinder Head Identification."

 

Different, not better, unless you have a problem with hood clearance.

 

Does the Y-Block suffer from any weirdness due to the stacking? Heat cracks, or lean running cylinder or anything?

 

No,the why of the Ford Y layout was done,is ::: ,Too match flow for every port as close as pos. combind with factory intakes,better then GM. There are some aftermarket intakes,that do not have walls in ports, in there intake with out a wall between cly. Looking at these's/both port are one big open hole. Those suck an work poorly on anything{ some are made this way for GM also,but more so poor on Ford Y=Two clys have firing order next to each other on right bank firing order> so open between those is bad . ;;Fix is don't use those type after market intakes,they designed them that way to save cost for after market Co./not to help HP of a Y.

 

There a good 3x2 for sale on Facebook’s Y-block forum.






Bones

 

Regardless of an engine's cylinder head/intake manifold design, it is more common that not for one cylinder to run a bit richer/leaner than others, particularly at higher rpm. If the difference is considerable, the sparks plugs will show it. If it's more subtle, a good dyno test will bring it to light.

1957 Y-block G heads made until April, 57 had issues with cracking. For that reason, Ford "posted" later heads, including the "113" service replacement heads. Ford recommended that the earlier heads not be milled more than .010; however, Ted Eaton (eatonbalancing.com), Tim McMaster (y-blockguy.com) and John Mummert (ford-y-block.com) have said that the non-posted can be safely milled .025. Posted heads can be milled more than .025. Ted Eaton has an article on an engine build in which posted heads had been milled .080, which, I think, is a bit extreme for any cylinder head, but no issues have been reported.

 

That's why I asked, if there was a particular cylinder to pay more attention to as early warning.

 

Ted Eaton told me that he routinely posts non-posted heads. I will have mine posted.

 

I have seen a few cars/w marine intake. Like I already said, "Different, not better." This addresses space limitations with inboard engines, like Chris Craft.