Answer
Nov 25, 2021 - 08:18 AM
Sorry, Volvo is very secretive about the pitch on any of their DuoProps. The skinny from Volvo is if you're replacing A or B series with J's, you use the same number. If you can't reach max RPM's with your B4's, dropping to a J3 set should pick up 150-200 RPM's.
