what carb?

[67_camaroRS]

running a beefed up 396 BB on my 1967 camaro. i wanted know whats the best option of carburetor? edelbrock or holly? if so what series? street car not a track car.

[Rod P]

I have used both and the Holley allowed the car to be more responsive and the car made a few more HP with it also.....

[GregWeld]

The correct SIZE is every bit as important as the brand. Carburetors are just "dumb" air / fuel mixers (not really).... and they depend on vacuum and air velocity etc. So if it's a STREET carb not an all out max effort race car... I'd use 85% volumetric efficiency for your calculation.

CFM = Cubic Inches x RPM x Volumetric Efficiency divided by 3456


396 X 6500 X .85 ÷3456...... 633 CFM

For a 396.... I'd run a 700 or a 750. You're always actually better off with a carb that is SMALLER than you are with a carb that is too big! Too big leads to poor response - poor fuel milage - and a sluggish motor.

Most of the factory "hi performance" 396's ran a Holley 780.... as did the 427's of the "day". My tri-power 427/400 hp ran triple two barrels that were 1150.

Remember that back in the day - fuel was cheap - and gas milage was HORRIBLE..... I prefer to think about how little time I spend driving a street car at wide open throttle.... versus just light throttle cruising.

You asked about brand..... Holley was the carb GM put on the hi performance BBC's in their hay day.

[67_camaroRS]

Thanks that was very helpful

[ept000]

Holley's web site has a tool for calculating what carb you need. Fill in the blanks and it will give you an answer.

Oh, and Holley is a much better carb.