question for the pros

coker6303

Keep Calm and Chive On!!
Aug 6, 2009
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Houston, TX
ok, I'm just curious on the overlap in the commands of the Allison. I know that on higher hp tunes (stock trans with transgo jr), the stock converter can have problems holding/locking up. Here's the question...if the converter is being commanded to lock, but doesn't lock, is there still a pressure drop to the clutch packs or is there only a pressure drop on successful lockup??
 

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
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Fullerton CA
Pressure drop only occurs when the converter flow valve strokes. The pressure drop can be defeated with proper valve modification.