is a 360 la. board to 410 c.i. got ported and polished edelbrock heads with 208 and 165 valves. carb is a barry grant holly 750 double pump. front is jeted at 76 and rear is at 83. my old cam was 248 duration and 484 lift and it ran perfect. couldnt find a decent short bed so i made the flat bed out of 3/16 aluminum diamond plat with 2x2 treated wood to keep weight down. bed only weighs 42 pounds