marine performance crate engines hi-tech® service replacement engines ... for mercruiser® omc® volvo® marinized engines extreme tork rated 300 hp original ... 220 hp up to 315 hp chevrolet based marine 5.7l/350 v8 2000-96 extreme tork ... cv350et50 cv350et55 chevrolet based marine 7.4l/454 v8 99-98 extreme tork original ... head #156 block #182 99-91 powercrate marine 8.75:1 c.r rated at 385 hp rectangular ... cv454et20 cv454pc10 chevrolet based marine 8.2l/502 v8 powercrate marine 8.75:1 c. ... used as a service replacement for 502 marineengines or as a re-power engine to ... replace 7.4l/454 v8 cv502pc10 marine crate engines include oil pan front ... cover valve covers harmonic balancers engines are supplied without intake manifold ... engines with cast pistons are blueprinted and ...