mountainman
New member
I'm looking at a 1999 50 foot Bluewater with Multi port 502's rated at 400 hp . How do I tell the difference between a gen vi - v and iv engine ? Do the engines used by the builder always reflect the same year as the boat ? I looked at a 1998 of the same make and it had throttle body injection . Was that the cutoff year for the throttle body ? It's hard to find specs on these engines (ie , 4 bolt mains - steel crank and rods - roller hydraulic cam - etc . Any more info + or - would be appreciated .