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Old 02-13-2013, 08:45 AM
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While not specific to the 700r4 here is an article about the 2004r and the principles are similar..

gmay98p7

I wouldn't block it open as it introduces a part throttle harshness. Stiffer spring would be the direction I would go. The hydramatic engineers spent untold time designing the system, and it can deliver smooth part throttle and crisp full throttle shifts if adjusted properly for your situation.
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