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Old 01-11-2022, 11:22 PM
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Bill Hanlon Bill Hanlon is offline
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Join Date: Feb 2005
Location: Fredericksburg, TX
Posts: 2,353
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Check this page http://www.pontiacsafari.com/L1Garag...eID/index.html
at "interchangeability" for info about attaching a later (59 in this case) crankshaft to an early (55 or 56) Dual Range HydraMatic's flywheel.

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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic.