Originally Posted by WaterDog
About 4 years ago I bought a new 4.0 from hamilton and it was a little over $1700 cost. IMO a 3.4 would be better. What is your WOT rpm?
Roy does good work. I had him tighen up my pump when it was new 3 years ago. The only complaint I have with a tuned up impellor is sticks have a better chance getting stuck between the blade and wear ring instead of getting spit out.
WOT IS 4500 rpm and 45 mph (gps)
cruise 3000 rpm and 30 mph
cruise 3500 rpm and 35 mph
i just feel that 4500 is a little out of the max torque range for 383.Roy said he thought he could work something out as far as getting a 3.4 impeller ,so i will wait and see . thanks for the interest and info. mike s.