408/360 question

I don´t know, no dyno time and no full quarter mile run up til now.

I expect the engine in the 450 hp / 450 ft/lbs range, checked a lot of builds and it seems my components should do this too, proper tuned (still working on that ;)). It feels really strong with power everywhere up to 6000 - my personal rev limit.

Specs: 360 LA roller cam block .030" over; scat 4" cast crank / i beam / hyper-u-piston (KB356) assembly, internally balanced; RHS X-Heads from IMM Engines, 10:1 compression; XR286HR cam 236°/242°@.050", around .540" lift. Performer rpm intake, 750 cfm EDE (for now, will change to 750DP).

I think with the EDE Heads you should reach your goal 425 HP, pretty reasonable to me.

Michael