after 81, any stock 360 in a truck built for US use (Cananda still had the Holley 2245 available as an option) was a 4 barrel. and from looking around at cams when I redid the 318 in my 83, (I used a stock 360 cam) the 80s 360s used the same cam as the 2 bbl 360s did in the 70's; NOT the "340 cam" as the "lil reds" had or the police 360 engines did.
Look up the specs for a COMP cams "252" and there you have it; the onl;y difference being the OEM cam has 0.410" valve lift the COMP has 0.425"; NOT enough to spend double the price for the COMP name.
the Melling Stock Replacement cost me $76 the COMP woulda been $145; in a 318 that cam really woke it up; not great outta the hole (being a 318 in a 3/4 ton could explain that) but midrange is huge compared to the stock 318 cam.... a 360, esp if you up the CR, (flat top pistons, smaller CC heads etc) could definitely use more cam than that stocker.