454 / 496 Stroker Short blocks with 625hp Hyd Roller Camshaft

1991 & Up 454 4 bolt main 496 Stroker short blocks made for Jet boat & Air boat manufactures.

These make excellent street / strip engines also

GM Marine Cam with 226/236 duration - .545 lift hydraulic cam

(Also avail. with the ZZ572 Hyd roller Camshaft)

Price is for the short block without heads!