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Old 02-20-2003 | 05:01 AM
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Antique
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From: Somewhere, DC
Default Name that engine

121/1C is a 5.8--121/1B is a 5.2..49ZN2 is a 4.2..47ZN is a 3.7..
You already have the best crank possible..The rear shaft extension is sometimes used for a spring starter when the engine is run with the stock magneto ignition..It is of no use when electronic ignition is used....