Depends on the 351 W variant. Early (1969-1970s) were generally the 220HP motors. The power went to 240HP sometime in the late 70's early 80's. By the 90's they had 260HP and GT-40 heads were optionally available as the high output (HO) 285HP version. In 1993 the 351 HO was available with Throttle Body fuel Injection (TBI), which improved fuel efficency and raised power ratings to 310HP.
Insurance becomes mandatory in Michigan if the boat is equipped with a 50 horsepower and above engine.
That depends on the model of the boat. The best thing to do is look it up on their web site. Click on site map. see link below
I'm not an expert but i believe it's around 190hp.
250 to 300 horsepower
dose this engine take oil or gas mix
No, sounds like something is wrong with your rudder or steering cable. I own numerous boats and and my Ski Nautique (like your mastercraft) is the best driving boat of them all. The steering is extremely easy because there is little to no torque on the rudder compared to all the torque generated by outboard motors where the propulsion system is doing the steering.
The serial number posted, appears to be a Mercury number. In order to answer your question, the horsepower of the engine is needed also.
No limit
On the capacity plate
On the capacity plate
On the capacity plate
Sure can but plan on a lot of work. You need to couple the gas engine to the shaft, install fuel tank and lines, engine mounts, exhaust (water injected is best as it gets HOT!) and engine cooling either air or water. Well worth the extra horsepower and sound!