Tranny stamp VIN begins in "29B" so it was replaced. I would think it would have come with a M21 or M22 from the factory, possibly destroyed drag racing? My old L78 car had a cracked case where the countershaft pin pressed in from all the 6000 rpm launches on slicks.
Paul
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70 Camaro LA Z-28 03B Citrus Green LT-1 M-40 3.73's
69 Camaro X-77 Z-28 10C Cortez Silver M-21 3.73's Deluxe Project X - SOLD
69 Camaro X-77 Z-28 01B Garnet Red w/Black top, M-20 3.73 Deluxe Houndstooth
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