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Swapping gears, from a 3.21 to 3.92

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Old Oct 1, 2010 | 09:44 PM
  #41  
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Mine also.
 
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Old Oct 1, 2010 | 11:21 PM
  #42  
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Ok I'll try to keep this somewhat in topic. The trip covered about 455 miles and what I found was with the 3.21s the sweet spot is 1550-1575 rpms
 
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Old Oct 1, 2010 | 11:28 PM
  #43  
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Which equates to 68-69mph. At that speed I consistenly avg'd 22.4 mpg. I also went 514 miles on a single tank with two gal to spare.
75 netted 19.7mpg. 65 netted 21.3. All pulled fr the somewhat inaccurate display.

I think if a diffuser was added behind the grille the mpg would be near 23 or better. I'll play with that idea after adding the gears.

All in all not a bad performance.
 
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Old Oct 5, 2010 | 03:12 PM
  #44  
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Originally Posted by ran jr
Looks like the prices for the 3.21, 3.55, & 3.92 have gone up recently but you can still get the 4.10 for $1270.

http://www.trademotion.com/partlocat...layCatalogid=0
Does anyone have the OEM part number for this axle? The 4.10 that is. My local dealer will honor that price, but is wanting the part number.

Thanks!
 
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