I have a Volvo 290 DP-B tag says 1.78 ratio its connected with a 454 engine also. Well heres the problem I am in need and am looking for a upper gearbox assembly. On of the gears inside of my drive broke 3 teeth off and has runied everything in its path. Im looking for a used one if could find one or find any info on which one MIGHT interchange with what I have I keep hearing this is particular drive does not swap out with anything else because of its bigger gears and gear set in it. Due to dual props. It has 26 fine spline on the driveshaft also. if that helps anything at all?
Pic of gear that broke.
Pic of gear that broke.