It's a 340 block that's been hardblok'd, 4.080 bore, 3.79 Molnar 4340 crank, Diamond small dome pistons, 6.200 Molnar H beam rods.
Custom Comp solid roller cam and lifters, Moroso pan, billet timing set and innovators west dampner.
Heads are Edelbrock rpm LA heads, fully ported, 2.055 x 1.60...