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Old 07-13-2016, 03:07 AM   #93
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Join Date: Aug 2004
Location: phoenix az
Posts: 87
Re: 4L80E & TH400 Tech.

Reading another wiki on modifications it was suggested one use only half heavy duty return springs and half stock springs in the direct drum? Do you have any thoughts on that I see you already discussed a .30 bleed hole with 5500RPM and higher applications. My assumption is more pressure is needed in the direct drum to over come the heavy duty springs.
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