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AUTOLITE 4100

B67FSTB

The NorCal dude from Belgium
While cleaning out my seller , I stumble on this carburator.
Its a 4100 autolite carburator with following stamps on it :
"E" and below "1.12" which I believe its a 600cfm carb.
on the bottom near trottle lever " C0AE K " so its not of a mustang I believe.

Is it worth restoring? It needs a choke plate , vent tubes , secondairie booster or nozzles I guess. And of course a rebuilt kit , I think.

Your thoughts please.
 

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I'm not much for concurs restorations so I don't know what it is worth or what it would cost. With that said, the Autolite carb is a good carb. It's probably worth it, if you have something to put it on...
 
I have always heard it is a good carb.
A "1.12" 4100 is a 600cfm carb and should match my 351W I have in the fastback.
Thats the reason of my thoughts plus its too good to throw away.:(
 
I have always heard it is a good carb.
A "1.12" 4100 is a 600cfm carb and should match my 351W I have in the fastback.
Thats the reason of my thoughts plus its too good to throw away.:(
well there you go! I'd fix 'er up and put it on the 351
 
if you dont want it i would be willing to take it off your hands. i like the autolite carbs, i have a 480cfm one sitting in my work/storage area.
 
Is 600 cfm to small for a 351?
Just based on engine size...absolutely. The formula to calculate necessary CFM is cubes X max RPM X VE / 3456. With this formula a 500 CFM would do the job on a typical engine. Now if this is a performance built (meaning well designed and assembled not just bolt on intake and headers kind of thing) your VE would be higher which could start to increase CFM need.
 
Just based on engine size...absolutely. The formula to calculate necessary CFM is cubes X max RPM X VE / 3456. With this formula a 500 CFM would do the job on a typical engine. Now if this is a performance built (meaning well designed and assembled not just bolt on intake and headers kind of thing) your VE would be higher which could start to increase CFM need.

Huh? well that's cool. I thought for sure it would be too small. But good to know thanks, I'm gonna use that formula myself!
 
About the most common mistake people make when putting together an engine combo is over-sizing the carb. Followed up by poor cam choice. Bigger is hardly ever better in either category. A simple 600 vac secondary carb will be more than enough for about any small block combo out there. Leave the big ones and double pumpers to the racers.
 
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