Pay special attention (as noted in the pontiacsafari info) that the Dual-Range flywheel fits flat to the crank flange. On the off chance that your '59 GMC crankshaft had been replaced by a '59 (or later) Pontiac crank, the flange/flywheel problem would occur.
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons?
... or has built a record breaking DOHC hemi four cylinder Pontiac?
... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967)
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