Andrew
Well-Known Member
I am refreshing a 440 for a 70 coronet R/T 4 spd 3:54. The motor currently has a solid flat tap comp custom grind similiar to xs290s. (.54 int / .558 ex) I would like to change it to a hydr roller but not sure which one. The heads are eddie RPM Prfrmrs. Considering the flow characteristics of these heads out of the box what would be the ideal cam lift without wasting unnecessary spring wear, cam duration etc.