Hopefully you can see these two pics. that has the codes you wanted to see underneath the Valve cover of the 54 235 Chevy Engine. Thanks Gdads1 . It read D194, and CON12.
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codes
thumbnail (85).jpeg (70.52 KB, 79 downloads)
codes

1953 Chevrolet 1/2 ton Panel Truck 3100
4800 LB. maximum rating, 85hp at 3300 RPM