Originally Posted by larrys auto repair
well i got a 470 lift cam ... 225 dr.
What casting number heads do you have. I am not sure of all the lift specs but i dont think the 470 lift cam will work. I know its too large for the corvette alum. Tpi heads. Not sure about all the cast heads out there. Your probably going to need springs as well with that cam.
Edit just loked it up 470 is the max for many performance heads but 450 is the max lift most springs can handle at lower rpms. High rpms will need springs sooner.