1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW
1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW
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1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW
Overall length is 26.030". Wide counterweight is approximately 6.0". Clean-out holes are the large 0.6250" (5/8") type. Main journals measure 2.4990" (see picture). Rod journals have 2 oil holes and measure 2.1390" (see picture). These measurements are consistent with a stock uncut crankshaft. Stroke is 3.750".
I bought several of these crankshafts from a hot rod shop that closed. They are all brand NEW never installed NOS French military surplus crankshafts. They still have the original "cosmoline" brown, wax-like petroleum-based corrosion inhibitors. There is minor surface/flash rust and shelf dirt. I have a couple of crankshafts that have been inspected and polished to confirm they are good to go. The polished "ready-to-run" crankshafts are for sale in a separate listing (not this listing).
According to VanPelt, these length and main journal dimensions should fit 1939-1953 Flatheads. This crankshaft has 2 oil holes on the rod journals so you can use with early type full-floating rod bearings or you can also use 8BA, 8CM, and 0BA connecting rods and the insert type rod bearings. Rod journal dimension is consistent with 1946-1953 Flatheads.
Possible original numbers:
29A-6303B
8BA-6303
1BA-6303A
99A-6303B
29A-6303B
Please verify this will fit your application/build.
See pictures for details. Pictures are of one of the crankshaft to show details. You should have this crankshaft cleaned and polished prior to use. Sold individually. Contact me for a bulk purchase.
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20230602_132305.jpg?v=1706723792&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231116_160304.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231116_160312_efa2387d-1a9d-436b-989d-47531261598b.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231116_160332.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231116_160253.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231111_150341.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231111_150526.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231116_155103.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231116_160121.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231116_160236.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/20231116_155925.jpg?v=1717858189&width=1445)
![1939-1953 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French Single NEW](http://flatbrokespeed.com/cdn/shop/files/FlatheadV8_JPG_3f7ed9a7-a6e3-4cbd-944f-85be485236cb.jpg?v=1717858162&width=1445)