My stock rebuilt 383, I used the Crower 271HDP #32242. It is simular in size. Advertised duration is 271/284, 222/234 @ 0.050", 0.486"/0.496" lift with 112 LSA. This cam made good power but it really wanted a higher stall converter. I guess I could have installed it advanced for more low end torque?
I think going with the smaller cam is the best choice if you plan on driving on the street.
Also, did your pistons have valve reliefs?
My "stock" replacement pistons had no valve reliefs, and I over-reved the 383, resulting in two bent intake valves.