4.33 GM 12 Bolt Gears - The Supercar Registry

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4.33 GM 12 Bolt Gears

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03-27-2009, 07:09 AM

scuncio scuncio is offline

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4.33 GM 12 Bolt Gears

I came across a set of original GM 12 bolt gears in a 4.33 ratio, P/N 3936481 and 3936482. Anyone know whether these have the 'COPO' heat treat?

Thanks
Tony

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