304 Carb Reccomendations - JeepForum.com

 
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post #1 of 5 Old 05-05-2002, 12:01 PM Thread Starter
Jami
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304 Carb Reccomendations

What kind of carb, and what size do you think would be best on a 304? Any suggestions would be great. Thanks Jami


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post #2 of 5 Old 05-05-2002, 08:21 PM
scottahicks
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I run a holley 650 double pumper on an edelbrock AMC performer manifold, I had to play with the jetting a bit,, but the throttle response is simply outstanding

If its broke I can fix it. if it isnt broke give me a minute!!!

1980 CJ5, 304 V8, flat top pistons, rv cam, quadra-jet carb, edelbrock intake, hooker headers, Purple Hornies 3" header glasspacks, Solid Driveshaft, t-176 manual 4speed, 3" body lift, 1foot extended front bumper for wrecker winch "no winch yet" 33X12.5X15 Wild Country XRT's on chrome wagon wheels, custom spray paint job, lots of rust, dents, oh and a driver that treats it like a jeep "screw the paint I can make it!" Daily Driven!!!!! Green Jeep Club member #37 Flamed Jeep Club member #1 and President
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post #3 of 5 Old 05-05-2002, 11:35 PM
jeepdaddy2000
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Carb size depends on application,low speed work needs a smaller carb. High speed(RPM) motors need larger carbs.A good formula to determine this is
CarbCFM=EngineCID X MaxRPM 304 X 45000(RPM)
------------------or--------------=400CFM
3456 3456
You must be honest with your estimate of max RPM.
Personally,I prefer large 2 BBL carbs or smaller 4 BBL's with vacuum secondaries. Try to stay away from carbs with diaphram power valves as these have a way of rupturing if the engine backfires.For a mild 4 BBL upgrade a Carter AFB(Edlebrock proformer) in the 400 to 500 CFM range would be a good choice.Be sure that the intake matches the carb/cam and is the aplication you want.Otherwise any larger 2BBL(rochester 2VC/2VE/2VG exct...any 2BBL from early model GM V8)is a good choice.

bazinga
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post #4 of 5 Old 05-05-2002, 11:41 PM
jeepdaddy2000
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CarbCFM= EngineCID x MaxRPM divided by 3456. Sorry the formula didn't post right.

bazinga
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post #5 of 5 Old 05-06-2002, 07:12 AM Thread Starter
Jami
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Thanks for the help guys, I will look into this.

Jami

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