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1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW - $250 (OBO North Inland San Diego)

1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW 1 thumbnail1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW 2 thumbnail1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW 3 thumbnail1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW 4 thumbnail1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW 5 thumbnail1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW 6 thumbnail1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW 7 thumbnail
condition: new
1939-53 Ford Mercury Flathead V8 NOS Crankshaft 3.75 French NEW 287

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. I have several of these crankshafts available. You will need to have this crankshaft polished prior to use.

post id: 7740479744

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