The cam I bought was ordered by Benschoff (SP?) racing from Comp Cams, it was a solid roller that had 260@.050 on the intake with .420 lobe lift. 266 @.050 with .409 exhaust lobe lift ground on a 108 lobe separation angle installed from 106 to 107 intake lobe center. It had a set of Harland Sharp 1.65 roller rockers also on the second and third set of heads.
The first time I dyno tested the motor on a DTS engine dyno in Ontario, CA at the Carb Shop dyno it made 612 HP at 5500 RPM and 644 Ft. Lbs. at 4500 RPM with a low deck 6 pack and set of iron 906 heads that made 9.25 to 1 compression ratio, I liked those results a lot That was a 1976 400 block with four sleeves in it bored to 4.375 with a 4.250 stroke crankshaft and a set of CAT 6.800 long BB Chevy H beam rods, Ross -22.0 CC dished pistons installed .025 down from the deck with Fel Pro 8519 PT head gaskets, nothing magic about any of those parts
The next time I dyno tested it was with a set CNC ported Eddy RPM heads and a new 4.300 stroke crankshaft to raise the compression ratio up to 10.29 to 1, same cam, rods, pistons and so on Those tests where done in the middle of winter here in central OR at 2500 Ft altitude on a Stucka dyno that was not calibrated correctly That dyno said it made over 700 HP with the six pack(720 HP at 5600 RPM) and a Team G dominator intake(710 HP at 5800 RPM) with a 1050 Dominator carb with a Wilson intake Manifold 1.5 inch reversion spacer
The last time I dyno tested it was with the same short block and a set of Indy SR M.W. intake port heads with the same rocker arms as the Eddy RPM heads, those heads had 76.00 CC combustion chambers that raised the compression ratio up to 10.78 to 1 with the Fel Pro 8519 PT head gaskets and they flowed 30 CFM more than the RPM heads did on the same flow bench. I used a Indy 400-3 intake with the Wilson 4500 reversion spacer and a Holley #9375 Dominator carb with the stock jetting. It was dyno on a another DTS engine dyno in Klamath Falls, OR at 4300 Ft elevation and it made 727 HP at 7000 RPM and a little less torque than HP on Oregon 91 octane non ethanol pump swill
On your deal go big on the heads and camshaft and rocker arm ratio, it will pay off big with a lot of tire smoke and almost out of control power