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4l80e pressure test

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Old 01-23-2009, 04:48 PM
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Default 4l80e pressure test

still having problems with my manuel v/b, i called Transgo, they felt it was low fluid pressure, which is kind of the way i was leaning-i ordered a gauge, and am gonna ck it tomorrow-i think the book at a wide range of pressures for the diff gear selection-what should i be looking for in the way of psi that would tell me im ok-i assume higher engine speed would be higher pressure, to better operate the clutches
Old 01-23-2009, 05:23 PM
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Originally Posted by forcd ind
still having problems with my manuel v/b, i called Transgo, they felt it was low fluid pressure, which is kind of the way i was leaning-i ordered a gauge, and am gonna ck it tomorrow-i think the book at a wide range of pressures for the diff gear selection-what should i be looking for in the way of psi that would tell me im ok-i assume higher engine speed would be higher pressure, to better operate the clutches
Depending on the pressure Regulator valve spring you should see a minimum of 50 psi at Idle and at heavy throttle upshifts around 175-225 psi. Are you using the vacuum control for line pressure?
Old 01-23-2009, 09:25 PM
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yes, i used their mod kit-i disc it, didnt see much diff
if i used your kit with a new v/b, can i keepmy same pump mods?
Old 01-23-2009, 09:42 PM
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Originally Posted by forcd ind
yes, i used their mod kit-i disc it, didnt see much diff
if i used your kit with a new v/b, can i keepmy same pump mods?
Yes you can. If you blocked any feeds in the pump let me know I can adjust for that. My full manual kit is designed so you do not have to teardown the transmission to install. It is can be adapted to most modifications out there.



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