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Old 01-20-2010, 02:51 PM   #1
STOCKISH
Formerly- 1972SuperCheyenne
 
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Join Date: Oct 2008
Location: Wake Forest NC
Posts: 5,782
4l80e, 3.42 or 3.73 gears?

I have heard that if running a 4l80 over a 4l60 that you can run 3,73 gears instead of 3.42 gears and wind up about the same cruising rpm's on the highway. I have also heard that the 3.42 gears are too tall for the 4l80 and will cause the trans to continually downshift in town to try to find it's happy spot. Can anyone with actual experience elabprate on this. All help is again, greatly appreciated. --Josh
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