My 88 35th also has the 9 clutch pack in the 700r4, and makes just over 580 ft. tq and the tranny tolerates it to some extent 1st thru 3rd. The problem is going into 4th gear overdrive with that much power. The band is usually the 1st thing to go, since it must hold the drum in order for the tranny to shift into 4th. And it usually does.