[hunting4bear]

cant help you totally on the engine block codes but i can tell you this the very first 2 digits ( letters combo ) D8 is production of 1978-1979 model year the v8 i am not sure on appilcation v tells the model vehickle it was used in and the 8 the engineering group. next set of numbers 60156 tells you its a motor block casting. last 4 digits tel the revisions or modifications.

as for firing orders i do know some camshaft applications as example if you have after market cams say in a 351 and but a replacement cam the firing order can be different versus say a 302 cam grind so you may have a different camshaft then original. but if i remember off top of head passengers side bank front to rear is 1 2 3 4 drivers side front to rear 5 6 7 8 with a firing order on 302 of 1 5 4 2 6 3 7 8. and 1 3 7 2 6 5 4 8 for a 351. i may be wrong but those stick in head for some reason for correct position and fire orders. but the rotation is counter clock wise not clockwise and fireing order in reverse for what you show above is for a 351 v8 not a 302 .

Dave