Stroker,
This thread gettin' off course?
These are the reasons, I say what I say, about the 516, 906, 915 and now the 452 heads. We have ported and tested them. I don't know what anyone else gets, but these are flow results I pulled from some of our tests. These are not the best results we have gotten except for test (3) the 915 heads. The upper lift flow gaps between the 452 and 906 heads is typical in our fully ported heads.
1) As a standard from our bench, a box stock Edelbrock Performer RPM 440 head
2) Ported 452 2.19 intake
3) Ported 915 2.25 intake
4) ported 906 2.25 intake
5) ported 516 we tested them once, we now throw them away and use something else
-----------(1)-----------(2)-----------(3)----------(4)
.100".......73 cfm..........90 cfm...........87 cfm.........91 cfm
.200.........146...............166..............157..............165
.300.........209...............218..............212..............219
.400.........254...............255..............253..............272
.500.........276...............278..............285..............299
.600.........287...............288..............309..............325
.700.........291...............294..............321..............335
.800.........000...............000..............327..............339
I guess if we're gunna continue this line we oughta find an applicable thread or start one.
