James, I am doing up a 97 Mariner Super mag 200 efi. What RPM range is this port map optimized for? Will it work for a 6500 rpm motor? Wondering if I want to raise my exhaust ports this high for a 1500 lb boat? 20 ' Alley Cat.

Beautiful block job, trying to make mine look this pretty, just got my Bridgeport mill
wired and running...

Thanks, Dave Leonard


Quote Originally Posted by wrechin2 View Post
Bullet, It is basically and little more aggressive than a stock PM. This block put in place of a stock 225 PM would feel a difference in power. You didn't want to go crazy as I could
have made it a 260 just by choosing the 260 program when I made the sleeves. The attachment is a PDF and can be emailed if needed.