Cracker39 Senior Member Apr 28, 2015 #1 I have what appears to be a "3" stamped into the head just forward of the number 1 plug. Is this a poorly stamped "B", indicating a high compression head, or something else? The engine is a late 1931, and probably original to my '31 Deluxe Tudor.
I have what appears to be a "3" stamped into the head just forward of the number 1 plug. Is this a poorly stamped "B", indicating a high compression head, or something else? The engine is a late 1931, and probably original to my '31 Deluxe Tudor.
