500 hp 454 gen6 marine mangus mercury racing

500 hp 454 gen6 marine mangus mercury racing mercruiser

454 gen-6 big block chevy no core charge! 4 bolt main block forged chevy crank and rods forged pistons flat solid cam heavy duty valve train roller rockers arp studs big oval port heads alum. Single plenum intake all new valve train . included are valve covers pan balancer and flywheel. these motors dyno at 550 tourque and 500 hp. depending on carb . These motors have very good low speed manners , dock very well and run good we have sold a lot of these and are proven to be a very well engineered combination. at the time of sale we will have you send us your carb and ign. so we can dyno the motor with the items that will be used on it . if you need we can supply them for you.