My Manley Hemi specs. 6.1 block 4.065 Manley pistons,rings,pins Manley 6.125 H beams Manley 4.05 crank 6.1 heads cnc stock valves, ported factory 6.1 intake, EFISOURCE efi Manley Nextek springs, Comp moly retainers and stock keepers PWR cam , 247/255/.600 114, Manley pushrods, stock lifters and rockers New stock 6.1 timing set and oil pump ARP main studs and head bolts Should run good.