[4zpeed]

Surely not the first time I screwed up either.

Back to the question at hand, I don't understand why the actual calculations reflect the differences stated.

Again assuming they used the same method in (Advertised) cfm for the 355 cfm 2 bbl and the 500 cfm 2 bbl, using your formula for each, wouldn't the 850 venturis have at least the same or larger (Actual) difference in cfm than the 750 venturis?

Originally Posted by Tom Vaught

"The venturis on the end carbs are 1-9/16" or 1.5625" for the venturi size (Same as a 850 cfm Holley carb venturi) but at the higher test pressure would flow more cfm."

(750 venturis) - (1 x 355 Advertised cfm 2bbl carb) - (251 cfm with the 1.414 conversion) vs (373 cfm with the actual calculations) = 122 cfm difference.

(850 venturis) - (2 x 500 Advertised cfm 2 bbl carbs) - (958 cfm with the 1.414 conversion) vs (963 cfm with the actual calculations) = 5 cfm difference.

Originally Posted by Tom Vaught

"THEY DO HAVE MORE CFM, A LOT MORE CFM"

Just wondering why am I not seeing it reflected in the actual calculations?


Thanks,

Frank