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Old Nov 2, 2004 | 02:48 PM
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From: Port Alberni
carb replacement

i have a 600 edelbrock on a 77 460 all stock i have a chance to put a 750 edelbrock on is this a good thing or not i plan on a set of headers in the near future this is in a 79 f250 4x4
 
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Old Nov 2, 2004 | 03:47 PM
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"83 460's came with the 4180 Holley with is a 750 cfm from the factory
 
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Old Nov 2, 2004 | 03:54 PM
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so this will probabaly do it some good
 
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Old Nov 2, 2004 | 05:23 PM
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Originally Posted by F250Wildman
"83 460's came with the 4180 Holley with is a 750 cfm from the factory
A Holley 4180 is a 600 CFM carb. I put a Edelbrock 600 CFM on my 86 460 and it runs great. A 460 will run out of steam at about 5000 rpm's which, by that time, you'll blow the engine and the carb will be the least of your worries. If you go with a 750 cfm carb, you might have to jet-down to make it run decent.
 
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Old Nov 2, 2004 | 05:32 PM
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so i should just stick with what i have.one more thing is that im putting 150lbs extra on my front end any way of lightning it other than a new intake
 
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Old Nov 2, 2004 | 09:33 PM
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any stock 460 will run great with a good 600 cfm
 
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Old Nov 3, 2004 | 06:10 AM
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I run 72 primary jets in my 460 to get it to run right, thats in a 4160 list 3310
 
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Old Nov 4, 2004 | 07:00 PM
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I have a 750 Edelbrock on my 460('79).No problems with rich or lean.I only have about 2K mi.with the carb and the end of the tail pipes not all black and smaggy.Truck is very responsive,but it still gets 10-12 mpg.............
 
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Old Nov 5, 2004 | 05:24 PM
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Stay with a 600 CFM. After you build it to over 300+ HP then a 750 CFM may be needed.
 
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Old Nov 5, 2004 | 06:07 PM
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i plan on a mild cam dual plane intake and headers what do you think this will bring a 1977 460 up to
 
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Old Nov 5, 2004 | 06:11 PM
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It really baffles me why it seems like everybody is recommending a carburetor that is SMALLER than what came from the factory!

JEEZ guys! The manufacturers work on these engine designs for a couple of YEARS, testing combinations ad nauseum before they release them to the public, and they spend literally MILLIONS of dollars doing it!

Stick with the STOCK CFM rating or better--those engineers put them on there in that configuration for a REASON!
 
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Old Nov 5, 2004 | 06:20 PM
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i dont know what CFM came on the 77 460 but i will be going with the 750 it has a 600 on it now the motor isnt in the truck yet but will be soon
 
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Old Nov 5, 2004 | 11:34 PM
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Originally Posted by Stonecoldtx
It really baffles me why it seems like everybody is recommending a carburetor that is SMALLER than what came from the factory!

JEEZ guys! The manufacturers work on these engine designs for a couple of YEARS, testing combinations ad nauseum before they release them to the public, and they spend literally MILLIONS of dollars doing it!

Stick with the STOCK CFM rating or better--those engineers put them on there in that configuration for a REASON!
460's came with a Holley 4180 which is a 600CFM carb. A Holley 4160 is a 750CFM carb. The factory equipped Fords with both, but the majority of 460's came with 600CFM carb's.
 
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Old Nov 5, 2004 | 11:49 PM
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Sorry, but I'll have to disagree with you on that--if I recall correctlythe ones that came on them originally beginning in 1968 were Motorcraft 4300 series carburetors, and while those original engines were equipped with the 600CFM version, all the one from about 1970-on were equipped with a larger, 750CFM unit . . .

Some of them were even the "Spread Bore" versions, intended to mimic the Quadrajet from GM, and I also know for a fact that a BUNCH of that version of the carburetors were even put on the 351C engines all the way through the '74 model year--I think on the 351HO and 351CJ.
 
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Old Nov 6, 2004 | 10:50 AM
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Sorry, but I just replaced the FACTORY Holley 4180 which is a 600CFM carb on my 86 F-250 with the 460 for an Edlebrock 1406 which is a 600CFM carb as well. I was concerned about the 600 being too small as well and considered the 750, but I talked to a service manager friend of mine at the local Ford dealership, and he told me tha the 600 is fine for a largely stock 460. If you do get a cam and some go-fast parts, then the 750 is the way to go.
 
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