Bud its my understanding that the some of the 318s in 85 came with roller cams and some flat tappet cams even in a the newer roller cam block. Ive popped many 85 318-s open to find a flat tappet hydro cam/new style roller block. In 86 the 318 trucks got the roller and if I recall the 360 pre mag roller block did not show up until 1988 casting numbers. Ive never seen in person or a pic of a 360 la roller block dated prior to 88. But ive been wrong before.
Early roller cams had the snout for the fuel pump, then the early FI cams had no snout. The one I posted has the snout for mech. fuel pump.
Many people use the roller cam blocks with flat tappet cams since a hydro roller still cant match some of the higher performance flat tappet cams and even more simple the overall cost in the end.
For people not well versed in the big confusing picture of the odd transitional years id not glean all my info from one person or one site, google is your friend and for one person even with 100% info it would take alot to type it all out so its much easier to spend a good night on google and sites like fabo, ramcharger central are just a couple good places the search engines will lead one to, magnumswap.com is really good.
Even wiki isnt perfect..... I just read this "Some police package cars came from the factory with a steel crank and h-beam rods.[3] There was also a "lean burn" version of the 360."...... Well id love to crack open a sledged up old police engine and find a steel crank and h beam rods but its not going to happen.
During the transitional years it was so easy to have two or three parts with the exact same casting number and exact same look but have fine refinements for roller/non roller that made them non interchangeable. Here is an example of two nos 1985 heads from the box, same PN, one has the larger pushrod holes for the roller motors, one fits la. One can work on both, the other is roller specific.