284/484 mopar cam for 340

I used that cam in the mid 1980s. Good cam. A lot of duration however. My set up included the recommended Mopar performance valve springs, stock rocker arms and Rhodes lifters. My cuda also had a 3000 converter and 4:10 rear gear. The car ran 12.8-13.2.

The cam worked well with my setup because a had a true 10.5 compression ratio. The X heads I used were milled. The combustion chambers were 63 cc. I would not use the cam for an engine build with low compression and/or highway gears or stock converter.