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Old 12-29-2018, 06:26 PM   #1
54blackhornet
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Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,303
TH350 with Ford ATF

The TH350 in my 71 GMC was always slow to shift between gears. Exspecialy going into 3rd. I read that using FORD ATF instead of Dextron might help improve shifting. I dropped the pan and found some Shiny bits but not much at all considering the transmission is 47 years old. Results are impressive, crisp shifts now. I will update if I experience anything out of the ordinary.....
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