Carburetion
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Freshman User
Joined: Feb 2003
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From: Northwest NJ
Carburetion
We have a 79 F100, inline 6 300, my dear daughters BF ( now EX!) messed it up with a piece of trash carb,,,, we want to go back to a stock type and size carb,,, anyone know what was there stock???? HELP!!!!! he tossed the old one...grumble, momble, grumble!! 
Thank you!!
Thank you!!
Last edited by Pupwalker; Jan 13, 2005 at 03:05 PM. Reason: oopsed
New User
Joined: Jan 2008
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The biggest problem is the thread is in the wrong forum.
It either belongs in the Fuel delivery forum or the Inline engine forum.
This is not a Year Truck specific topic it is about a carburetor.
Thread moved to Inline six forum.
It either belongs in the Fuel delivery forum or the Inline engine forum.
This is not a Year Truck specific topic it is about a carburetor.
Thread moved to Inline six forum.
Thread Starter
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Freshman User
Joined: Feb 2003
Posts: 32
Likes: 0
From: Northwest NJ
they put on a holley 500 2bbl, even though everything has been checked, it floods, will not idle, gas in exoust, the carb frosts on the bottom... our Mech feels it is a bad carb, junk and start over.... feels that it is "over carbed" I am sick of this truck being off road, for months, with 3 of us working, depending on 1 car is the pits!!!
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Elder User
Joined: Oct 2004
Posts: 556
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From: Ridgeway, Virginia
I think by 79 Carter had moved to the YFA which is a YF with a bunch of extra vacuum ports for all the emissions crap that was being put to work on such models. If you want utter simplicity go order a Carter YF based on around a 68 model. Most were manual choke which is a plus to me but if you must have an automatic choke you need to find one with an electric choke instead of the heat tube type. The heat tube is a lousy idea and you probably dont have that type setup with a 79 engine. I'm not sure what years the YF was produced with electric choke. It probably wouldnt be hard to add an electric choke spring in place of the heat type. They both have what looks like the same size housing.
Some of the older 300s had a slightly smaller carb base and I believe swapping carbs made for the different intakes can be done with some slight modification of the bolt holes. Or you can swap out intakes. Reason I say this is the fact that I suggested an early YF and this may be an issue. Really getting an old manifold would be the way I would go if I had an emissions engine and was not running the emission controls. That way you loose all the goofy vacuum ports and you can loose the nasty EGR valve as well. Sounds good Huh?
Hope this helps!
Greg
Some of the older 300s had a slightly smaller carb base and I believe swapping carbs made for the different intakes can be done with some slight modification of the bolt holes. Or you can swap out intakes. Reason I say this is the fact that I suggested an early YF and this may be an issue. Really getting an old manifold would be the way I would go if I had an emissions engine and was not running the emission controls. That way you loose all the goofy vacuum ports and you can loose the nasty EGR valve as well. Sounds good Huh?
Hope this helps!
Greg
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