Mike Up Posted April 19, 2008 Share Posted April 19, 2008 So what's up with a different model transmission on the 2008s. The 2006s and 2007s with the 4.6L seem to have the 6 speed auto 6R60. I have the 6R80 transmission in mine. I heard the 6R80 is the same trans in the Expedition so did they beef up the trans for 2008?? Have a good one. Quote Link to comment Share on other sites More sharing options...
akirby Posted April 19, 2008 Share Posted April 19, 2008 The last 2 digits (60 vs. 80) indicates the torque capacity. 60 = 600 and 80 = 800 ft/lbs. The torque converter will produce a peak torque multiplication of around 2:1 so that means the 6R60 can handle approx. 300 ft/lbs from the engine while the 6R80 can handle approx. 400 ft/lbs. So yes, that's a beefier trans. Quote Link to comment Share on other sites More sharing options...
Mike Up Posted April 19, 2008 Author Share Posted April 19, 2008 Sorry I was wrong. The ink was smunged and I thought it read 6R80, it is the 6r60. Sorry, have a good one. Quote Link to comment Share on other sites More sharing options...
Mike Up Posted May 10, 2008 Author Share Posted May 10, 2008 OK, I finally found out where I heard the 2008s had the 6R80. It was directly from Ford's website here. 6R80 Livonia (Mich.) Transmission2008 Ford Expedition 2008 Lincoln Navigator 2008 Ford Explorer 2008 Ford Explorer Sport Trac 2008 Mercury Mountaineer 2009 Ford F-150 It appears that all the above now have the 6R80 for the late 2007 model year and 2008 model year. Nowhere on Fords site do they reference the earlier Explorer 6R60 transmission or th earlier Expedition 6R75 transmission. My TSB bulletin even referenced the 6R60 model number. From what someone stated, the transmissions are all the same but differing the torque converter for midsize and fullsize trucks. Perhaps the 6R80 is a general model number. Have a good one. Quote Link to comment Share on other sites More sharing options...
Mike Up Posted May 10, 2008 Author Share Posted May 10, 2008 The last 2 digits (60 vs. 80) indicates the torque capacity. 60 = 600 and 80 = 800 ft/lbs. The torque converter will produce a peak torque multiplication of around 2:1 so that means the 6R60 can handle approx. 300 ft/lbs from the engine while the 6R80 can handle approx. 400 ft/lbs. So yes, that's a beefier trans. How's that so? The Mustang has 320 lbs of torque yet uses the 5R55S. 55 = 550 / 2 = 275 ft/lbs. That's 45 ft/lbs. shy of the engine output. Have a good one. Quote Link to comment Share on other sites More sharing options...
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