I just read that 6L80 article in Hot Rod. Sixth gear is .67. Isn't that the same as the 4L80 or close to it? I guess what would be the benefits besides being able to handle more torque and having 5-6 chirps in the back?
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1972 Nova 355, 4 spd, rusty but something to drive.
1972 Pro-touring Cutlass S in the works....still
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