273 warm up!

I agree if he uses the 2bbl pistons but if he gets some of the 4bbl variety I think it could work. You may have to advance the cam a few degrees. My Commando's solid is pretty lumpy but does not seem to pull like it should to higher rpm's. The rebuild was a pretty stock rebuild with no extra machining done. I'd like to go with one of those cams, a performer, headers, a bit of porting and a full header, 2.5 in exhaust. This is just my thoughts.
You answered your own question so to speak. "My Commando's solid is pretty lumpy but does not seem to pull like it should to higher rpm's." Too much cam regardless of the compression/pistons.