Found some new record low/mid lift flow in the SB E heads lately so figured I might as well share:

LIFT
.100"--73.2
.200"--144.2
.300"--207.1
.400"--250.1
.450"--265.7
.500"--269.8
.550"--273.3
.600"--276.0

Mostly the result of trying out a new .080" wide 22 degree back cut on the valves....Hurts some up in the high lifts, (.600" and up) but is great for a sanely cammed street motor. I'll probably be doing this little mod from here on out on SB E heads that come through here. I never had one go over 200 @ .300" before. Actually the .200"-.550" #'s are all new highs for me, some by a considerable amount.



















I think these are going on an AAR 'Cuda.... Can't remember exactly. Coke Bottle Kid knows the owner......