Supposed to have my boat sold with no power so trying to get a feeler out on selling engine. Weighing my options. I bought this motor last year as a 650 hp motor with 5 hrs of dyno and run time. Ran it for another month and pulled it apart to build it up with 1071 and efi. Bottom ends and heads have probably 30 hrs on it. Camshaft,lifters,and rockers are new.

MkIV bowtie block 502
GM 3521 forged 5140 nitrate treated steel 4.00" stroke crank
Eagle 4340 rods
JE forged blower pistons
Merlin 320 steel heads
Comp custom grind blower cam 245/245 .650 lift 114 LSA
Comp pushrods and springs
Morel hydraulic roller lifters
Comp pro magnum roller rockers
Littlefield 10-71 blower with superchiller
Twin billet 1200cfm throttle bodies
8 60lb injectors with fuel rails
Holley HP EFI fuel injection with harness and everything contained on motor.

Motor made 770/790 on 7psi and pump gas
Pushed my 25 daytona to 105 mph last time out of the season

Will come with CMI etop headers

Total motor has under 50 hrs on it

13,000