Carb size?
 

I have a 7.4L 300HP carbed motor. I'm changing the carb out, what size holley 4150 should I use and what size jets? Also changing to a air gap intake on recommendation from OSO. Thanks in advance!:party-smiley-004:

750cfm

look into barry grant sea demons, had very mixed results with holley marine carbs.

In fact I would recomend calling their tech line for a size recomendation.

http://www.barrygrant.com/demon/default.aspx?page=21

I agree with Griff. Anything more than a 750 will be too much for that motor.

The reason i suggest calling tech is that Demon carbs are wet flow rated and therefore do not directly compare to holley numbers.

thats like there fuel pumps are like 15 volts:eek:

The holley 4779 would be a good one,or the new version of it, or the BG speed demon,just order the j tubes or order them from Gary Williams carburetors,mississippi,he also sell carbs.
The BG seems cheaper than the Holleys,last time i shoped them.

A 4 corner idle will be better

http://www.barrygrant.com/demon/default.aspx?page=5


http://www.jegs.com/i/Barry+Grant/13...010VE/10002/-1



http://www.summitracing.com/parts/HLY-0-4779C

droplegs, hp version
http://www.summitracing.com/parts/HL...1/?image=large


if your planing on moving up in power in the future, step up to 850+