BB carb size [Archive] - Chevelle Tech

: BB carb size


vendo
Dec 14th, 03, 7:32 PM
I have a 402 .060 over .494 lift cam 10:8.1 pistons and I have a edlebrock new quad 750..looking at some charts say a 750 is way to big..it does smell real rich on idle and lowend Is not great.. want to try a quad 650 on it I don't run the car over 4k..I just drive it,and I updated the trans with a 700R4 and ran up to lake george N.Y. from mass..very nice. what do you think. al

TJW
Dec 23rd, 03, 1:36 AM
Judging by the rpm range you'll be in, the 650 should be fine. If it's a Holley, you might have to monkey with it to lean the idle.

Bad Rat 414
Dec 24th, 03, 1:31 PM
I run a 750 duouble pumper on my 414 with a .575 inch lift cam and around 10.8:1 and I have no problems at all.

Mike Feudo
Dec 24th, 03, 2:14 PM
Even if it's too big you can tune the richness out. In a car with an OD trans I would think very hard about a Q-jet. They meter extremely well at part throttle which is where you will be with the OD.