ANY WAY TO IDENTIFY CAM SIZE WITH INTAKE MANIFOLD OFF?

[1968_Charger]

IM BUYING A 383 WITH A LARGE UNKNOWN CAM IN IT AND WANT TO TRY TO MATCH A TORQUE CONVERTER TO IT. IS IT POSSIBLE TO FIND ANY NUMBERS ON THE CAM ITSELF THAT WOULD TELL ME WHAT SIZE IT IS? I DONT WANT TO TEAR THE ENGINE DOWN, BUT I WOULD TAKE THE INTAKE MANIFOLD OFF IF IT WOULD BE WORTHWHILE. THE GUY IM BUYING IT FROM DOESNT KNOW THE SIZE BUT SAID IT HAD A PRETTY LUMPY IDLE AND HAD ALOT OF TOP END POWER. I KNOW JUST INSTALLING A NEW CAM WOULD BE THE SMART THING TO DO, I JUST DONT WANT TO SPEND MONEY IF I DONT HAVE TO.
THANKS FOR ANY INPUT.

[frederick]

Number will be on the end of the cam, so that means taking of the waterpump, pulley's, balancer, timing cover and camshaft gear.
Camshaft gear off = retime the cam and you don't know to what specs.

I would use a indicator and degree wheel and measure max lift and 0.050 duration.

[1968_Charger]

ok thanks