1970 Dodge Dart 318 upgrades

Wyrmrider said
some more 318 cam data- there were several stock cams- her's two

373/399 240/248 10 50 58 10 (20) 1970 318

373/399 240/248 10 50 52 16 (26) 1971 looks like they changed the lobe centers moving the exhaust around same intake centerline, more overlap
72 -76 shows 373/400

.405 240/248 (26) 1500-5000 318 72-79 use MP 4451755 240-248-(24) as replacement

Thanks for the data; I'll guess that the latter were changes made for emissions... like the CR's being lowered.

And maybe more importantly, it important that the Mopar method was for duration at .008" tappet lift. Jim, if you re-do the graphs, I'd be putting in at least 10-15 degrees more on duration for that stock cam.