Fast Fred's Secrets of the OMC MOD50's Thread #1

[David_L6]

I wonder what those motors were turning with a racing lower unit on a tunnel hull and how many horsepower they were making at those RPM's???

hp falls off, but that don't mean she won't keep turnin up, which will give the hull some vary long legs.

Anyone have any idea what kind of RPM's they were getting out of those motors on tunnel hulls?

Fred, what if the compression was bumped up a bit? (McDaniels piston on left, factory piston on right.)