Didn't get anything I wanted to done on my week off. Been battling issues with my fathers Sierra since the swap. (Last November) Turns out I got the one 60E to 80E conversion harness that was bad. New one on the way... this better fix it. I have been run ragged testing the wiring in the truck and replacing parts in the transmission.
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
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