rear differential id

[grumpyvette]

http://www.rocky-road.com/diffid.html

http://dfwmotorsport.com/Fairlane/9inchrearends.htm

http://www.pirate4x4.com/tech/billavista/60_front/

http://chevellestuff.net/qd/rear_axle_info.htm

http://www.coloradok5.com/axleguide.shtml

http://en.wikipedia.org/wiki/Dana_60

http://www.kevinstang.com/Ninecase.htm

http://www.chevellestuff.com/qd/generic ... e_info.htm

http://www.4wheelnoffroad.com/axle.html

http://www.yearone.com/yodnn/tech/TechF ... fault.aspx

http://www.steeltechsolutions.com/REAR_AXLE_ID.html

http://www.venturesparts.com/Rear%20Axl ... 20Page.htm

http://www.348-409.com/differential.html

http://www.corvette.net/tech-6.htm

http://jp.automotive.com/26278/154-0708 ... index.html

http://www.shortwheelbase.com/www/tech_dana_44_rear.htm

these threads should provide you with a great deal of differential related info


viewtopic.php?f=45&t=273

viewtopic.php?f=45&t=757

viewtopic.php?f=71&t=1261

viewtopic.php?f=71&t=945

 

[grumpyvette]

SNOMAN posted this infoQUOTE
There is actually two twelve bolts and two 10 bolts. On the 12 bolts there is a 12 bolt car which has a 1.625 diameter pinion shaft and 12 bolt truck which has only a 1.438 pinion shaft. (it is possible to use car gears in a truck 12 bolt if you change pinion bearings) It got its name from the fact that 12ea 3/8 inch bolts hold ring gear to carrier and 12 bolts holding cover on. On the 10 bolt 8.5 inch ring gear size there was the original 10 bolt that had a 1.625 pinion shaft diameter and 10ea 7/16 inch bolts holding it on and then between 89 and 91 GM upgraded it and called it a 10 bolt 8.6 (gears will interchange with old 8.5) During those year it was possible to get either axle. This new 10 bolt has axle shafts that are .100 inch bigger in diameter which make them a stronger than old ones and it uses same number and size of bolts holding ring gear on. (both 10 and 12 bolt are 30 spline) The D44 also comes in two versions, The original and most common one has a 1.375 inch diameter 26 spline pinion shaft and 10ea 3/8 inch bolts on 8.5 inch ring gear. The D44 used in Vette, Viper and some Grand Cherokee rear axles have a 1.625 29 spline pinion shaft and 10ea 3/8 inch bolts too. I would have to place a modern 10 bolt above a old 12 bolt, especailly in truck version and old 12 bolt car about equal to it. If I had to choose between a modern 10 bolt, a 12 bolt and a D44 for a rear axle, I would likely choose the 10 modern bolt. (Excluding Vette/Viper D44 maybe) If you are looking for a rear axle upgrade I would suggest you look for a 14 bolt 9.5 inch semi floater as it can be had with same 6 lug pattern as 10 bolt and is about the equal of a stock D60 and a big step up from a 10 bolt in axle shaft, pinion, carrier and housing strength. The 9.5 has a 1.875 inch diameter 30 spline pinion shaft and 12 ea 12 mm bolts holding ring gear to carrier (these are just under 1/2 inch in diameter) The cover has 14 bolts on it and is where it got its 14 bolt name but it is also known as the GM 9.5."