The internals of the motor are all RoushYates spec. It was sold of their nascar program a few years ago when they went from the D3 engines to the newer FR9 engines. This one has done one race since last refresh (400 miles)
It's a nationwide spec. roller engine, compared to the Flat tappet Cup motors. A little less power and torque, around 800 HP and 530-550 Ft-lbs, compared to the Cup motors around 850-870 HP - still (a lot) more than my skills can handle.
I will need to detune a little (I think), probably a less aggressive cam to lower max rpm to around 8000 and maybe thicker headgaskets to lower compression to under the current 12.1.
The block is a 9" deck R451 dry sump with a Bryant crank (3.260 stroke), Plankl rods and Mahle pistons (4.15 bore). Heads are Yates D3s with titanium valves, retainers and locks and jesel valvetrain. Carburator is a Holley 830 nascar.
I'll be taking my chances with the ZF, after all, aren't they supposed to be able to handle 550 Ft-lbs ??