Two barrel cam was 240 duration (advertised), four barrel was 248. Lift for the four barrel was .415 intake, .425 exhaust. My memory is that the two barrel lift was a bit less than .400.
Back in the day I put a TRW solid lifter cam, 284 duration, .426/.422 lift, in my Commando 273. Lotsa duration, not much lift, but it sure woke that little 273 up. Nice rumpity-rump idle, too.