Roller Block with Magnum heads???

@rumblefish360 yep I definitely made a mistake I meant fuel pump eccentric not oil pump. Thank you. I guess my main confusion or at least a big part of my confusion is, is there a difference between the 360 non roller blocks (1984 and prior) and the roller blocks between 1985-1992. I believe the 1985 to 1992 360 blocks were in fact still LA blocks but because of the rollerized lifters, were the lifter (holes/sockets?) longer than the flat lifter holes/sockets. That is why I was curious if the 360 blocks between '84 and 92 would be better used as boat anchors. What set me off on this idea? If you were to go to summit racing and search for a cam and lifter package for lets say a 1990 dodge ram 250 with a 360 you get, "no camshafts available for this engine". That coupled with the differing camshaft fuel pump eccentric, and I was in the land of confusion at that point. Then add to the fact that I am trying to bolt up a set of magnum heads to this block with the different rocker ratio and I was a little concerned with the whole geometry for this setup, and buying parts etc. I have more questions I am sure, and I am sure they have been answered before. I'll keep absorbing info like a sponge. Thanks.
The “Roller Cam” blocks have taller lifter bores.
If it is a Magnum block, it will not have a head oiling passage after a certain date. (I forget.... ugh!)
Re calculate the cams lift if it is advertised as a *** lift with 1.5. Just divide the lift by 1.5 then multiply by 1.6.