I have a DIVE-6015-a2b. Heads are d3ve-a2a. It is out of a 1977 jet boat. It has Duel 4brl carbs on a highrise intake. I'm wondering how to determine if it is a high horse power motor. What other numbers or things should i look at to find out. The jet boat had 3 different motors. One of them had 490H.P. Im trying to see if that is the motor i have.


Any help or info would be appreicated

 

It's possible, you can't tell untill you open it up.