Jerry
I did a search for your 3733813 block # and it came up as a 261... Two sites said it was a 55-63 year and the third came up as a 58...
1954 Chevy 3104 3 Window Hydra-Matic in my family for over 60 Years
Once in a while you get shown the light in the strangest of places if you look at it right... "Scarlet Begonias" Grateful Dead 1974
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