I have a 24' maxum 2300sc just repowered 454 with a volvo dp. running f7 at 6000' elevation max on tac 3600. I should run 4200 to 4400 should i go to f4s or f5s? what is the change from f7 to f6 to f5 ect.ect. 1" for every 200 rpms is what i have been told so i need to find out if f4's are 3" change from the f7's?
Thanks
ed
Thanks
ed
