I am new to the site, mud motors, and looking for some help. I bought a 648 war eagle with this motor and it does not seem to plane out. I figured it should run on but barely hits 15mph. the prop seems to blow out of the water even trimmed down. Any help?

Do you know the condition of the prop? May be worn, I expect that would run the standard big blade 12.25x10P.

Also, alot of product specific info on the MB forum. Do a search.

Like DB8 said, probably a worn out prop, or possibly a bad hook in the hull.

Sent from my Droid because I'm trying to be as cool as you someday.

Sounds alot like a hook to me, if it was a worn prop it should be spinning up high rpm's