My first Restoration. needs help!!!!

The motor is 30+ years old. Any cam you put in it, even a stock cam is going to need new valve springs. You can buy a new set of Comp Cams 901 springs and a Valve spring compressor for around $100.

If your looking for 400hp your going to need to do more then just stab a cam in the old block. Your gonna need to put some money into those heads.