numbers on my valve cover

[moparcuda]

what mean these number on my big block valves cover?

 

[65dartcharger]

what mean these number on my big block valves cover?

View attachment 1715685217

View attachment 1715685218

Probably last two digits in the engine code. Example; x75 meaning 440 automatic transmission, no a/c, no power steering, power brakes, standard fan and no cruise control.
#526 = 273 x 2bbl, auto, no power brakes/steering, standard fan and no C.A.P. Engine code for this on the order sheet was 30. On the buildsheet it had #30 for engine but on the same sheet #526 so they knew exactly what was added or deleted on the engine before final assembly.

 

[69CoronetRT]

Engine assembly number and the code of the proper linkage to go with the assembly. The assembly number is the same as shown on the Broadcast Sheet.

What year and engine/transmission combination?

 

[moparcuda]

Engine assembly number and the code of the proper linkage to go with the assembly. The assembly number is the same as shown on the Broadcast Sheet.

What year and engine/transmission combination?

Was on a 68 newport 383 2 barrels

 

[69CoronetRT]

Was on a 68 newport 383 2 barrels

Without a/c? Does that look like 713 on the cover?

 

[moparcuda]

Engine assembly number and the code of the proper linkage to go with the assembly. The assembly number is the same as shown on the Broadcast Sheet.

What year and engine/transmission combination?

Coming from a 68 newport 383 2 barrels with 727