the debate begins here!!!

[shiifty_dart]

Hello all I know this will start a debate but I have a 383 with a doug herbert cam the lift is 480, and stock bore doing the math I came up with aprox. 580 cfm carb so I just rounded up to 600 cfm. I want to know what I should use and what experince you guys and gals have had with this delema? I have a 750 holley but its about wore out should I get a 600/650/750? thanks all
shiifty

 

[moturbopar]

If you are looking for a new carb i am having great luck with the summit 750 carb! I have it on a 318 and it runs great! Has no flat spots, no hesitations, best bolt on and run carb I have ever used.

 

[mullinax95]

I ran a 750 vacuum secondaries Holley on 383 with a MP .484 cam and I had no problems. It would fly. In comparison I ran a 500 cfm on my 273 with no problems. I doubt I would feel comfortable with a 600 cfm carb on a 383. If you have a auto trans stick with vacuum and if have a manual trans go with mechanical.

 

[805moparkid]

that calculation seems to only be a factor from a milage stand point... i think of it more as a minimum...

cant go wrong with a 750 on a BB

i mean... i run a 600 DP on my 6 lol