The old SingleCam engine. It was very clean, but didnt run to well. Compression was Ok in cylinders one, three and four, but very low in cylinder number two. Upon disassembly of the engine it was noticed the the head was slightly warped and the number two piston had bad rings. But on a positive note, the main bearings and the rod bearings were in susprisingly good shape for having 235,000 miles on them.