welcome aboard
boats do not come with manuals. they came with a brochure telling you where to get service, not to hit the dock and that the pointy end was the bow and the flat end with propellers was the stern
they would have come with manuals on the motors.
Mercruiser never used the Chrysler 440's, however Chrysler Marine did and that is probably what is in your '70 sport fisher. Mercuiser did have the cyclone 440 which is a 454 putting out 440hp
post a few more times, and you should be able to post pics (tutorial in the rules and guidelines forum)
