Being that 360 hydraulic roller cam engines where used when optioned in Ramchargers (2 & 4 WD), 3/4 and full ton trucks, and 3/4 & full ton vans, I imagine there where a lot of different emissions criteria to meet for each vehicle through the years.
As an example, I’ve got a 1990 318 industrial hydraulic roller out of a Ramcharger with .386 lift intake and exhaust and a 1987 W100 garden variety 318 with a .417 intake and .386 exhaust. I haven’t degreed them to see the final outcome but I imagine they’re going to be an interesting comparison.
