outside air temps were low 90s
lake was for the most part flat
I was carrying roughly 150 gallons of fuel and no passengers
prop is an old dinged up stock Powertech 4 blade prop 25P
propshaft approx 2.75" - 3" below hull.
engine is a 502 bored 40over (509) stock crank and rods, J&E pistons,stock rectangle port heads, custom cam, HP500 intake and carb with aluminum manifolds
69.2 mph going one way
69.4 mph going other way
on my Raymarine GPS
not too shabby for a 20+ year old 6000lb boat with mild power..
Couldnt give it much trim under 30mph, the faster I went the more I could trim without blowing out prop.
I also have to learn have to drive it as its only my third time out on it, started a little side to side dance so I didnt trim it any higher..
With right prop, more seat time, more chop and 100 less gallons of fuel Im thinking 72-72mph?