L33_944

I'm trying to figure out what the best carb for a 6.0L would be running the edelbrock performer RPM intake?? They recommend their 800CFM for a 5.7L.

I want a holley carb though and they dont make an 800CFM in their street avenger line.

Should i go 850cfm street avenger? or a smaller double pumper?

Thanks,
Jeff

Lonnies Performance

iTrader: (16)

The Edelbrock is an air valve secondary carb, so it is larger than needed, but due to this design will not over carburate the motor.

Going too big with a double pump Holley will cause you grief.
It can bog at low rpm if too large.

A vac secondary Holley is more forgiving & is OK at 750cfm.

Double pumpers are more appropriate at a 650-700.
Unless you are running a lot of gear and/or big converter, conservative is better.

cfm = cubic inch * max rpm/3456. This is the formula for 100% VE which street engines normally do not achieve.

L33_944

so then a 6.0L is 366CI

366*6000(rpm)/3456 = 635
if redline were 6500 then = 688

I'm new to carbs so could i run a 750 holley? or is that over kill and cause it to stumble down low?
im thinking this carb: http://www.holley.com/0-3310C.asp

Lonnies Performance

iTrader: (16)

Yes, the 3310 vac secondary 750 is fine. For a double pumper you may be better with a 650-700 as mentioned above.

L33_944

awesome thanks for the info!