[DAVID GAGNARD]

Guys;

Holley's own formula for determining carb cfm size for any given internal combustion engine goes like this;

Maximum RPM x cubic inches divided by 3456...assuming that given engine is 100% efficent....

Example; My 351-W-----6000 rpms x 358 cu in=2,148,000 divided by 3456= 621.52 cfm needed for my engine assuming it is 100% efficient,Assuming it is at least 90% efficient,I would now only need 559.36 cfms to operate it at it's max potential.

I have run everything from 600cfm Holleys with vac sec. to 715 Marine Holleys to highly modified 750 holleys and the best,fastes,and quickest at the 1/4 mile was an Auto Zone rebuilt Holley 600 vac sec for a whopping $150.00.......

David