Chiphead,

I checked the 1942 Master Parts Price List and it shows the thrust washer.

838472 $.02 (7/8" O.D. - 1/2"I.D x 3/64") 1937-1942

That would make it a pretty common piece (i.e. all 216 c.i.). Per Tonys reply, it seems it wasn't used very long on the 235.

'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton

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