My prior motor...rb 451 with stock crank and rods. 10.6 comp forged pistons wiseco, with lightly cleaned up rpm heads with rpm intake and mp 557 cam. In my 68 charger at 3900 lbs, it ran consistant high 11.30’s to low 11.40’s at 119-120mph. Thats with manual tranny and 4.30 gears.