Just purchased a boat with twin blackhawks and I am looking to tear down the outdrives this winter. Was wondering what there was for info out there on upgrade gears or shafts. I plan on making Aeration tubes for it this summer, but I am relatively new to this outdrive. I also plan on upgrading the engines to 450hp and I would like to make sure that I dont spend next summer looking for parts and not in the water. Thanks for any info.

Give Aaron a call at Maxmachineworx they have convert them to Xr gears and there stronger shafts ,I know someone that run 750+ hp thru one @100mph

Great thanks