Overdrive on or off
#3
If you have 3.54 gears turn the od off untill going over 45. if you have 4.10s(like me) leave the od off till you're doing 35-40ish. It's better for the TQ and keeps the fliud flowing at optimum. Thus more going through the trans cooler. All this equals longer life. All this is from Dan at Masta Performance Transmissions.
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