Built August 5 1955
H= August
5 = 5th day
5 = 1955

Engine serial number (first pic) also indicates 1955. Built in Flint plant. Y = what it was installed in (car or truck) donโ€™t have that info in front of me at the moment.

Very likely a 235.

Welcome to Stovebolt. ๐Ÿ˜


Kevin
1951 Chevy 3100 work truck
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Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.