Edlebrock Carburetor on 1957 312

[Farley's34]

Is there a specific new Edelbrock or new Holley 4V carburetor that is direct bolt on to replace a Holley 1273 on stock 312 ?

[dmsfrr]

What's wrong with the existing Holley 1273? How much do you want for it?

Is it in a '57 T-Bird? They have a lower fuel inlet fitting than most other carbs to fit under the original air cleaner, which was made to fit mostly 'around' those carburetors, not so much on top of them, for clearance to the hood.

Keeping the original style air cleaner can be challenging (or not possible) with some other carburetors.

[craig]

You probably won't find a 100% direct bolt on carb other than what it came with. The Edelbrocks and Holleys are universal, you'll must likely have to make some alterations, neither would be a big deal.
I'm in agreement with dmsfrr, why not use the 1273, it was designed for your engine and it worked fine. If I were to use something else, it wouldn't be either of those. I like a 4100 Autolite, especially the '65 &'66 289 K code version. Over the years I've had several Y blocks that worked excellent with this particular carb, unfortunately it's really tough to find today...Fix you 1273, you won't be sorry

[miker98038]

Here’s a link to Ted Eaton’s 4 barrel carb tests. It’s old, but you’re comparing your old carb. Worth a few minutes to read.

https://www.eatonbalancing.com/2012/...ting-on-the-y/

There’s more carb discussions over at http://forums.y-blocksforever.com/default.aspx.
Probably because there’s more modified cars. Recent talk over there is a newer Summit carb with the annular venturis has performance much like the later Autolites Craig mentioned. There’s probably some info about setting them up as regards linkage and air cleaners.

There’s a big difference between a bolt on carb and a ready to run carb. Really smooth drive ability and performance will almost always require some tuning/jetting work. But given todays gas, even non ethanol, that may be true of the original carb.

[Hot Rod Reverend]

I am always fooling around with carbs - I guess I just love tinkering. At any rate, you can check out a blog post here on installing one of the Summit 4 barrels on a Y Block. https://www.hotrodreverend.com/post/...he-292-y-block

[ALLTIN33]

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Carter AFB lots better quality than eldelbrock only problem is fuel line is located left side of the engine on a y block just like edelbrock. Both are square bore and use the 5/8 - 20 fiting. Most all auto supply sell the fuel line it self with fuel line pressure inlet.

[55blacktie]

Farley, the simplest thing to do is arrange for Sal Cicala to rebuild your carburetor. You can also look at Factory Refurbished Carburetors on Holley's website. The 4160 carburetors are styled like the 57 4150, both of which have a single fuel inlet on the driver's side.

Tbird suppliers sell a replacement 465 cfm Holley 4160, but they are expensive (so is Holley's 390 cfm 4160). If you want either of those carburetors, you can ask Holley to put you on their contact list if either (or any other 4160 factory refurbished carburetor) becomes available. Holley will notify you by email.

If you use a replacement 4160, you will have to replace the fuel line between the mechanical pump and carburetor. Tbird suppliers (Concours, Casco, etc.) sell the replacement fuel line as well as the replacement 465 cfm carburetor.

Keep in mind that a new 4160 carburetor will have either a manual choke or electric. The 465 cfm replacement carburetor is no longer available with the heat-riser choke.

Unless you have a 55-57 Tbird, hood clearance shouldn't be a problem. The Tbird will require a drop-base air cleaner (like the original), particularly if you intend to use a carburetor spacer, including the one used with the pcv conversion kit. Summit has a 14-inch round, drop-base air cleaner/w 3-inch element that will work; the price is about $30.

[scicala]

"Farley, the simplest thing to do is arrange for Sal Cicala to rebuild your carburetor. You can also look at Factory Refurbished Carburetors on Holley's website. The 4160 carburetors are styled like the 57 4150, both of which have a single fuel inlet on the driver's side."

Thank you 55blacktie.

I would be glad to rebuild your original 1273 if you want.
I agree it would be the least expensive way to go while remaining 100% original.

Sal Cicala

[paul2748]

I have Edelbrocks on two cars, one a 312 and the other a 302. Both engine s are slightly modified. Love the carbs. Neither have given me any problems, ran good right out of the box. One has been running over 20 years with no rebuilds necessary. If it's for an early bird, the stock air filter will not work w/o modifying. One car is a stick, the other an auto.

[55blacktie]

A family member has been running a 600 cfm Edelbrock on his 65 Mustang/w 302 for years. As far as I know he's had no issues. They sell a lot of Edelbrock carbs, but they also sell a lot of Holleys. I can't say one is better than another, and you might consider other brands as well. The Summit carbs have good reviews (made by Holley), but they are dual-feed on the passenger side, like the modern Holley 4150.

Again, much of it comes down to what you want to do. If all you intend to do is replace the carburetor, there's no need to consider anything other than what you already have. If you are performance-oriented, you need to consider the entire build combination, then select the carburetor that works.

[Gene F]

Originally Posted by 55blacktie

A family member has been running a 600 cfm Edelbrock on his 65 Mustang/w 302 for years. As far as I know he's had no issues. They sell a lot of Edelbrock carbs, but they also sell a lot of Holleys. I can't say one is better than another, and you might consider other brands as well. The Summit carbs have good reviews (made by Holley), but they are dual-feed on the passenger side, like the modern Holley 4150.

Again, much of it comes down to what you want to do. If all you intend to do is replace the carburetor, there's no need to consider anything other than what you already have. If you are performance-oriented, you need to consider the entire build combination, then select the carburetor that works.

I have a Summit carb on my streetrod (was on car when I bought it), and that thing is impressive. A good value for sure.