Here is a direct comparison of Hughes' own flow numbers for the two cylinder heads in question. Taken from the hughesengines.com website.
-------------- Victor ---------------- "Big mouth"
---------- Intake--Exhaust ------ Intake -- Exhaust
Lift
.100 ------- 75.8 --- 57.4 ----- 77.4 --- 89.0
.200 ------ 167.4 -- 115.5 ---- 168.1 -- 139.2
.300 ------ 238.5 -- 154.1 ---- 236.4 -- 156.0
.400 ------ 296.2 -- 187.0 ---- 279.0 -- 185.0
.500 ------ 339.3 -- 212.3 ---- 304.8 -- 206.0
.600 ------ 357.3 -- 227.7 ---- 312.3 -- 218.0
.700 ------ 366.7 -- 238.6 ---- 319.9 -- 226.0
.800 ------ 371.3 -- 246.7
It's also interesting Compare OU812's numbers below to see how much difference using a different flow bench can make, Sometimes almost as much as 10% or 27.3cfm @ .600" lift between Hughes and OU812's results testing the same product.
(VICTOR OU812)
.100 70
.200 145
.300 221
.400 282
.500 310
.600 330
.700 345
.800 356
.900 363
1.00 367
