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dont know the diff.??is the 69 motor balanced the same. & if so will this flywheel work on this app.



69 440 Hp is internally balanced and used 11" flywheel...70 440 HP is externally balanced and used a 10 1/2" flywheel....also different crank dampers

70 Road Runner 383-4 4 speed FJ5 & black guts
70 Charger R/T 440-4 4 speed FJ5 & white guts