I have a stock 454 that was out of a motorhome, and want to know what kind of horsepower and torque numbers I should see if I get an edelbrock intake, cam (thinking just the perfomer stuff), and some thorley tri-y headers. Anyone know what this combo should run? Or recommend another brand of cam? Due to money concerns I can't get aftermarket heads. I don't know what type heads it has now, does anyone know what types of heads chevy put in motorhomes? Someone posted a link a while back that could reference casting numbers, I'll find the casting number and find it out if anyone knows the link. Edit addition: Another setup I was considering would be an aluminum intake (not sure which) with a Comp 268H cam and headers. What kind of RPM would this motor safely operate at? What other mods would this cam require as far as valve train goes?