" From: "RetroRalph" <retroralph@xxxxxxxxxxx> " " Armand, " I scanned a couple pages on the AMC 20 rear-ends with this type of info " from Dick Datson's "The AMC Survival Book" that I have here.It is 4 " image scans range from 77k to 211K file size I think. " " I believe it indicates the 2.73 diff is only is for the 7 9/16" rear end " for both STD and TwinGrip. It is not shown in spec for the 8 7/8" rear " end. It shows as being 15/41 tooth gears for the 7 9/16" which must be " the AMC 15 Rear. datson's info is incomplete. 7 9/16 is indeed the amc15, but there was a 2.73 for the amc20 as well, beginning about '76 or so, on a new carrier. there was also a 2.56; both are still used in the amc20s in h1 hummers - at least, the military ones. of minuscule importance, there's 3.08 gears in a 'heavy hummer' [probably the uprated armor model]. i haven't been able to discover if they're the same as the jeep 3.07s for the 3-series carrier, or if they're a special set for the 2-series carrier, so that the military only has to cover one differential. what's the point? the hummer diff is a gleason torsen, possibly the best posi ever invented, but not available on the retail market. if there was an amc20 3-series version... though how a civilian would get his hands on an ordinarily military-channel part i don't know, but the 2-series torsens should be as close as your local hummer dealer's parts dept. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list