1912 B block has had repairs by an excellent repairman. $900.00 plus shipping firm. Two cracks in block bronzed inside and out, front of motor in timing area cleaned up, bolt was welded in and needs cut down and threaded to tighten timing cover, water jacket cracks repaired. This is a good solid block to rebuild, serial number B3511, early October of 1912. More photos to send.
A'll B blocks were for 1913 models. B315 is original in a 1913 Model T Touring here in Minnesota.
There were some used in the beginning of September '12 so you will find some late 12'12s as well. MG
I owned B-339 for a while. It was an Oct. 1912 car, titled in Mn. as a 1912 but had most all 1913 features, including the body.
IT IS THE B339 I WAS THINKING ABOUT. Locals always called it a 1913. Jerry Glubke owned it for many years.
My 1912 Torpedo Roadster is B3386 it has early '13 front fenders. The shipping invoice for my car hasn't been found yet but known #s should put it around the end of October. MG
B922 is here in Northern Cal, has it's original 1913 style touring body but many "1912" chassis features.