371 build W/Big Mouth heads

wow, the flow #'s are not even close from Hughes website.

.400 lift= 279 cfm
.450 lift= 292
.500 lift= 305
.550 lift= 308
.600 lift= 312
.650 lift= 316
.700 lift= 320

i was looking a buying a set. i will wait to see your results.

is there a reason why you are running a solid flat instead of a solid roller?