I have a Erson e410421 in a 70 4speed charger RT with stock intake, heads, and kb 236's Its been 12.60's at 108 with 26in slicks bolted on, and the 8-track blasting Foghat. The cam idles with a nice lope, but not to crazy. I know it's technically a Chevy grind but with .472 lift it fit right in with no extra work.