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Discussion Starter · #1 ·
which autolite 4100 carb will suit a stock 1965 289? i'm switching from a 2bbl to a 4bbl
which carb was standard, a 1.08 or a 1.12 ?
what is the cfm's of the carbs?
if a 1.08 is standard, is a 1.12 too much carb?
 

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The 1.08's were pretty much standard for every 289, and it ran about 475 cfm. The 1.12 was used for the Shelby 289 and possibly some of the big block engines. It typically is about 550 cfm. Both are very sweet carbs, and either one will work with a stock 289 4V. If given a choice, I'd choose the 1.08.
 

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The 1.08s rated at 480 CFM and that would be great for what you have planned. It is a sweet carb. The 1.12 is either rated at 600 or 750 CFM, I don't remember. But remember even the Hipos came with the 480s from Ford. Unless you run deep gears, and a warmed up engine, that carb will serve you well. Gonna use a stock 4V intake manifold?
 

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I just put a 4100, 1.08 on my 66 coupe, w/ a stock 4v intake. [and dual exhaust. I LOVE IT!!! works great, and was definatly an upgrade.....
 

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VictorII said:
The 1.08s rated at 480 CFM and that would be great for what you have planned. It is a sweet carb. The 1.12 is either rated at 600 or 750 CFM, I don't remember. But remember even the Hipos came with the 480s from Ford. Unless you run deep gears, and a warmed up engine, that carb will serve you well. Gonna use a stock 4V intake manifold?
No, the hipos came with a 1.12 carb
 

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Discussion Starter · #6 ·
going to use a stock ford intake.possibly an aluminum ford from a different year if i can find one.....20lbs weight difference from a cast iron unit :)
 

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Discussion Starter · #7 ·
will an ford aluminum intake from an early '80s 302 pose any problems if used, or should i stick with a cast from the '60s era?
 

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According to Bob Mannel, early 289's in full sized cars came with the 1.12. Adjusted properly (which includes proper jetting) both are very serviceable carbs on a Mustang.
 

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Edelbrock F4B is a great aluminum intake. It's a copy of the Cobra intake used on Shelbys.

Also the new Edelbrock Performer works well. If you want it to look stock, grind off the lettering and paint it Ford blue. Everyone will assume it is stock.
 
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