Is this a SB or BB motor ? Also is this a older Purple Shaft street Hemi grind .484 lift 284 duration cam or one of the newer grinds? If it is one of the older version for BB motors I hate those no good rascals, nasty sounding idle, no vacuum at idle and no low end power down puke
If it is a SB motor, I have no real experience with them confused

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)