Mine dropped 1000rpm, i think the leg the previous owner had on was geared for a v6.Thanks bully jack. I've heard from guys same speed as before400 to 600 less rpm with duoprop
I agree, on step alot faster!Dont know about the above statement i can run 2500 rpm and at 18 mph still on plane with duo prop .
one thing about duos is they get up on step WAY faster and will hold you better.
ive been running them for a long time pretty cool systems , re-powered with the new LS series engine and duo prop VERY impressed with the system...
I have been doing a lot of repower research.
Indirectly see stuff on stern drives such as:
Dual props don't do much below 25 mph.
Most of Volvo Penta power package complaints are about the stern drives.
Weight differences will be a minor issue.