OEM SB Casting #974 Manley Pro-Flo 2.02" x 30º BC

.............BEFORE.........................................AFTER

.100"_____62.0____________________________62.4
.200"____127.3___________________________128.9
.300"____188.9___________________________192.1
.400"____241.8___________________________240.2
.500"____269.8___________________________268.0
.550"____268.0___________________________****
.600"____269.2___________________________266.2
.650"____269.9___________________________268.3
.700"____273.3___________________________268.3

**** - Turbulent/Noisy