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Post Info TOPIC: Carburetor


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Carburetor


Have a 64Pontiac,283 ,2 barrel.Have 4 barrel centre head.What is the best carb for this setup,a 500 ,maybe 600 and what would be the best brand.Car has stainless duals.

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Phil Brewer


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What's a 4 barrel centre head?


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seventy2plus2 wrote:

What's a 4 barrel centre head?


 Well, as a guess, center, between the heads! Intake manifold I am sure he means.



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Vincent Jr.



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Center head is often the term used here on the East Coast for an intake manifold although I also heard that a few times in Ontario. In PEI a hangar bearing is called a "steady bearing" and an oil pan is called a "bottom pan". Snow tires are often referred as (by the old timers) "Ground Grips". Took me a while to learn some of these terms when I worked in service here. A hood is still called a "bonnet" here too. I've also seen "tires" spelled the English way "tyres".


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I learned something new today. Centre head, steady bearing and bottom pan are all new to me. Ground grips was a common term here when I was a kid.

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Ok, if he has a 4 barrel centre head (intake manifold), what flange or bolt pattern does it have? (carter, holley, quadrajet, etc?) Photo's would help.

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Canadian Poncho wrote:

Center head is often the term used here on the East Coast for an intake manifold although I also heard that a few times in Ontario. In PEI a hangar bearing is called a "steady bearing" and an oil pan is called a "bottom pan". Snow tires are often referred as (by the old timers) "Ground Grips". Took me a while to learn some of these terms when I worked in service here. A hood is still called a "bonnet" here too. I've also seen "tires" spelled the English way "tyres".


 A steady bearing in my parts growing up was called a carrier bearing. When I first started in my field, I asked my GM parts guy for a carrier bearing and he didn't know what I was asking for. The intake was known as a "dome or battleship". I was in Brampton in '87 and went to get a dome gasket for my uncles G-van.. what's a dome gasket? Oil pan was a base pan.

As for the intake? I would say it would be an equibore, "squarebore" for '64?



-- Edited by 67Poncho on Sunday 10th of January 2021 07:37:22 PM

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Vincent Jr.



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Phil, on a power pack 283, the carb was a 4gc, about a 450 cfm, unless you have built some sort of screamer high reving 283, Id go no bigger than a 283. As was discussed above, what intake do you have amd what carb will it accept?

Welcome to Canadian Poncho btw from a fellow east coaster.

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Hi Phil, welcome from Halifax. DonSSDD is likely right the 4 BBL of choice by GM was a Rochester 4gc. In my mind, since your 283 came with a 2BBL which they all did from 62 onward, you need to Google the casting number from the intake to find out what carb it was designed to accommodate. As a Cape Bretoner, we use to refer to the intake as 'dome' so I get the centre head name but have never heard of it Interesting how we all have different names for the same parts. Please don't let that deter you from posting!

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Typo on my note above, cfm 450/500 recommended.

Rochester 4gc used on at least 59 283s and low hp 327s until the quadrajet came out. Higher hp 327s had a Carter afb, likely a 450-500 cfm. For instance, in 62, the 283 only came as a 2 barrel, the 327-250hp had a 4gc, the 327-300hp had an afb. The 63 low hp 409 had a big 4gc, high hp had 1 or 2 afbs.

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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic



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I have a couple of factory rochester 4GC carburetors for a factory square bore manifold,  if one is of any interest to you.  will need rebuild.  if you are wanting a stock factory look that is.



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If you go with a Edlebrock or Holley the stock 4 bbl. air filter won't fit [ if you have one] as these have a larger dia. opening but a aftermaket "open filter" will work. Also you can get a carb. adapter plate to fit your older "intake " but that will raise the carb a 1/2" or more. a picture of manifold [ centre head] would help?? Welcome from Blackstock Ontario

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