Trick Flow 440 heads, The Real Deal?

younggun2.0 said

so it looks like the small bore does cost a little bit of flow but its not catastrophic.

what do OOTB box eddys flow? what hp gains would you expect on a moderately built 383. going from OOTB eddys to these?

Click to expand...

Last OOTB RPM heads I flowed.

Lift................IN/EX

.100..............70/57
.200............145/112
.300............205/163
.400............245/197
.500............260/217
.600............276/231
.700............281/239

Just a guess, but about 50hp. You are talking about a 54cfm gain at your lift range. No guarantees because each engine is an experiment of one.