i was just wondering witch would be a better performance carb for my 355sbc. it is built for a 700-750cfm easy i was just wondering what kind to use some say the double pumper, street avenger or even the edelbrock performer. economy is not a big concern so any input would be appreicated

 

Holleys are pretty safe if You leave them alone. A Double pumper is going to give Yoy gas when You want it, the rest rely on the ennine vacuum for secondary blabes to open. Go from there.

 

I think that a vacuum secondary 750cfm holley single pumper will work great. I wouldn't go with the double pumper because thats more gas then you need.

 

Whats the complete set up? trans type, rear gears, cam specs?

 

if you body is stock weight i would stay away from the mechanical secondaries. vacuum secondaries are best for a heavy body. Sick

 

my body is stock and the whole set up is holley systamax II kit with aluminam heads, street dominator intake, roler rockers, forged crank, eagle rods , forged dome pistons, lunati cam .290/.297 dur .490/.490 lift 110degrees lobe seperation, b&m th350 with 2800rpm stall, 3.42 eaton posi, 26in tall indy profile ss,msd ignition system with hei distrbutor 10.7-1cpr. at idle i only pull around 10in of vacuum. and also what kind of power do you think it will make

 

with that cam not a as much as you are hoping. doesn't have very much lift for a bored 350. i run about the same cam in my 305. your gonna over carb with a 750. Sick

 

Is this a street racer or a track only racer....

are you running a rev limiter.....

street racer ... Edelbrock 1812 800 CFM... manual choke

track ... holley 800 sqaure bore.....since it's an auto, I'd run a vacum secondary, tuned right it'll do ya good,

 

it will be a street strip car i was just worring that i don't have enough vacuum, for a vacuum secondary carb

 

also holley claimed with that setup and a double pumper you can get about 425hp out of the motor and that is all i am really looking for