Magnum cam in 318 roller engine ??

Good question.

IIRC the roller/non roller 318 cam is the same spec or real close-

318 2 barrel 67 Hydraulic 390/390 244/244
318 2 barrel through 88 Hydraulic 373/400 240/248
318 4 barrel Hydraulic 430/444 268/276
318 roller cam Hydraulic 391/391 240/240

This is what I have for the mag cams, but it might be at 1.6 ratio-

5.2 Magnum Hydraulic Roller 432/432 251/264 113CL
5.9 Magnum Hydraulic Roller 410/417 249/269 109CL

MP 380 crate cam 501/513 288/292 230/234@.050