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Old 08-15-2016, 07:46 PM   #1
chazdo2
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Join Date: Mar 2016
Location: auburn new york
Posts: 71
1971Chevy Pickup not shifting right

I think I have my engine RPM problem figured out. It is a three speed auto tranny. It seems like its only shifting first and second gear. I guess that would explain me running around 4K RPM's at 55 MPH. Any ideas why the tranny is not shifting up as it should? The vacuum line is hooked to the intake manifold and the tranny.
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