Ah OK. So what's the diff between '59-60 top ends and '61-64? Did the early 389s use the same bore, stroke and journal sizes as the 65-later 389s? Was the crank snout shorter '64-earlier? Did the earlier engines use windage trays, baffled oil pans, etc? Oil pump driveshaft the same? And what about the motor mounts?
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I could explain all this to the girl at the parts store, but she'd probably call the asylum.
White '67 LeMans 407/TH350/Ford 3.89... RIP
Red '67 LeMans. 407/TH400/Ford 3.25
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