I have a 2011 VP 320HP 5.7GXIC-P engine that blew due to oil pan cracked.
Outdrive is DPS-A 195 with F5 Duo-Props.
Boat had good holeshot and 50 plus MPH a 5400 rpms WOT
After rebuild, engine now has 343HP at 5,000 RPM's and 362 Ft/Lbs torque per dyno.
I put it in water to test expecting great holeshot and quicker acceleration to top end.
Boat now is down in holeshot response and acceleration and will only get to 40MPH at 4000 RPM's WOT after some time.
In neutral, engine will rev over 5000 RPMs no problem
Someone suggested an F4 prop set may help but that is an expensive maybe.
Its only 25HP more so ho could that change the characteristic s much.
Could this be a computer issue, gearing, props, other? PLEASE HELP
Outdrive is DPS-A 195 with F5 Duo-Props.
Boat had good holeshot and 50 plus MPH a 5400 rpms WOT
After rebuild, engine now has 343HP at 5,000 RPM's and 362 Ft/Lbs torque per dyno.
I put it in water to test expecting great holeshot and quicker acceleration to top end.
Boat now is down in holeshot response and acceleration and will only get to 40MPH at 4000 RPM's WOT after some time.
In neutral, engine will rev over 5000 RPMs no problem
Someone suggested an F4 prop set may help but that is an expensive maybe.
Its only 25HP more so ho could that change the characteristic s much.
Could this be a computer issue, gearing, props, other? PLEASE HELP