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Old 06-29-2016, 12:26 PM   #91
kell490
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Join Date: Aug 2004
Location: phoenix az
Posts: 87
Re: 4L80E & TH400 Tech.

I would like to be able to manually shift down to 1st gear if possible. What do you think about this pressure regulator spring CK sells 185-190 PSI http://www.ckperformance.com/View/TH...GULATOR-SPRING Should I just leave the stock spring in the pump?
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