I posted my response in the wrong area, but I agree with those above. I was a civilian mechanic for the Army and we had a bunch of M714s with that engine. The rest of the power train was indestructable, but the engine gave a lot of problems. It was not very powerful and when overworked they'd come apart. Military drivers can destroy a steel ball and they kept us busy working on, or replacing engines. A 250, or 292 swap would be a vast improvement! Don't waste your money on that sucker!
