My 34 ply ran hot. What I did in steps, was remove 340 pulleys and put on 360 pulleys, relocate trany cooler from bottom tank, to under the running board, and the thing that helped the most was putting on a 7 blade engine driven fan, not a clutch fan. That alone took 15 degrees out of the probelm. Also did that on another car and it did the same. Brass radiators will remove more heat than an alumunim radiators,