I built and dyno tested a pump gas 572C.I. EFI Hemi motor for a local car show guy, he didn't want a all out high performance street and strip motor
It is going into a 1970 Challenger with power steering, air conditioning, 18 or 20 inch wheels with a low ride height for driving to the local car shows and a car his wife can drive also
I started with a new World 4.500 bore cast grey iron block, new Scat 4.500 stroke Hemi crank, Manley SS Hemi I beam rods, Diamond pistons that ended up having 11.01 to 1 compression ratio, CNC ported Stage V street heads with all the Stage V rocker gear, EFI camshaft for power brakes, dual 4150 EFI throttle body single plane intake from Tim at FHO
Holley Dominator EFI tuned by Rich at Fastman EFI on a DTS engine dyno in Chico, CA last month.
It made 799 HP at 6500 RPM in a open loop with 730 Ft. Lbs. torque at 4900 RPM, I was hoping for more HP and torque but the customer is happy
We tested it from 3500 RPM to 6500 RPM, it made 469 HP at 3500 with 704 Ft lbs. and it made 799 HP at 6500 RPM with 645 Ft. Lbs. Hopefully this will set the customer WAY back in his seat at WOT under any conditions
That is if he doesn't loose control of it first