We built the 455 Olds for my Son's 29 Ford, started with a '73 block, had the usual machine work done..............bored 30 over, decked, deburred, line bored, hot tanked, etc. Then we added forged flattop pistons with ARP connecting rod bolts. For heads we went to a set of Ga heads. We also have some C and D heads, but these were already done with stainless valves and some polished ports so we used them For a cam we went with a pretty radical (forget the exact specs) Crane hydraulic cam and kit, and topped it off with a '66 442 tripower setup.

You don't really have to do much to these 455's to get some great street performance, they are torque monsters. You just have to get the compression back up, especially on later engines, and get some breathing with decent heads and a good dual plane aluminum intake with something like an 800 cfm carb. You won't need a crazy cam, although we did because we wanted it to rock and roll at idle.

If you still need some more power, a 150 HP shot of nos will sure help, but you will want forged pistons for sure.

Don