feerocknok Posted September 29, 2006 Share Posted September 29, 2006 The pictures are big so I made them thumbnails. It's an '86 2wd 2.8L in the JY. I hoped it had the 904 cause I need torque converter bolts, but that's no 904. Just curious. Link to comment Share on other sites More sharing options...
whowey Posted September 29, 2006 Share Posted September 29, 2006 The rear is an AMC 20. The tranny looks like a 999(been awhile since I saw one in person). But the "half-Bowling Ball" cover is a dead giveaway for the AMC 20. Link to comment Share on other sites More sharing options...
feerocknok Posted September 29, 2006 Author Share Posted September 29, 2006 The rear is an AMC 20. The tranny looks like a 999(been awhile since I saw one in person). But the "half-Bowling Ball" cover is a dead giveaway for the AMC 20. Was thinking it was the 20, thank you for the conformation. I've never even heard of the 999! Thank you. Link to comment Share on other sites More sharing options...
hemi_comanche Posted September 29, 2006 Share Posted September 29, 2006 that tranny sure looks like an AX 4/5 to me, but that is just a guess or just another angle http://www.indyhpmedia.com/pics/Comanch ... ission.jpg Link to comment Share on other sites More sharing options...
aemsee Posted September 29, 2006 Share Posted September 29, 2006 What vehicle is that tranny/ rear end out of? If I recall, the 999 was the 4wd version of the 904 used in the AMC Eagle with a hydraulic lock up convertor. What gears are in the 20? That is actually a very strong rear end if you get one piece axles for it. The R&P are larger than a dana 44. Link to comment Share on other sites More sharing options...
mjeff87 Posted September 29, 2006 Share Posted September 29, 2006 Tranny is an AX4/5. And the 20 is a definate "get it" in my book. Pete is running one in his rig, and unlike the CJ '20, the MJ ones are one-piece shafts BUY! BUY! BUY! Jeff Link to comment Share on other sites More sharing options...
whowey Posted September 29, 2006 Share Posted September 29, 2006 What vehicle is that tranny/ rear end out of? If I recall, the 999 was the 4wd version of the 904 used in the AMC Eagle with a hydraulic lock up convertor. What gears are in the 20? That is actually a very strong rear end if you get one piece axles for it. The R&P are larger than a dana 44. The 999 also made appearances in the XJ/MJ family. But your right, its basically a 904 with a locking converter. Its a AX-4/5, thats what I get for posting that late instead of being asleep. Ummm... a nice DP to start the morning makes all things better. Link to comment Share on other sites More sharing options...
mjeff87 Posted September 29, 2006 Share Posted September 29, 2006 Since that '20 is behind a 2.8, it could have either 3.73 or 4.10's most likely. Here's some help to identify the ratio: Identifying the gear ratio of an AMC 20 is a bit tricky. Dana axles normally have a tag on the left of the diff cover with the gear ratio at the time of build. The AMC axles have a code that has to be looked up in a table. The code is stamped on the housing boss to the left of the diff cover right near the axle tube. Good part about the stamp is it tends to stay readable longer than the tag, but you have to know the code. Since there are conflicts between what a code means for a narrow track and what it means for a wide track, don't count solely on the code to identify an axle. Bring a tape measure or know the source of the part. Specs Narrow Track AMC 20 Code Gear Ratio Diff Type AA 2.73 Open DD 2.73 Trac-Lok BB 3.31 Open CC 3.31 Trac-Lok A 3.54 Open N 3.54 Trac-Lok GG 3.73 Open Q 3.73 Trac-Lok L 4.10 Open M 4.10 Trac-Lok Link to comment Share on other sites More sharing options...
87manche Posted September 29, 2006 Share Posted September 29, 2006 wish that 20 was near me, I'd pick it up in a heartbeat. Link to comment Share on other sites More sharing options...
Pete M Posted September 29, 2006 Share Posted September 29, 2006 Yeah, owning an AMC-20 is cool. :D I wish mine wasn't so rusty though. Link to comment Share on other sites More sharing options...
feerocknok Posted September 29, 2006 Author Share Posted September 29, 2006 I spun it (counted the driveshaft rotations vs. wheel rotations), and got 4.10:1 out of it with an open diff. I don't really need the axle cause I already have 4.10s on my 35 and it has new brakes, races, and looks pretty. Can someone help me out with figureing out how much it'd cost to get? The price list says: Cost: $75 Core: $25 Is the axle $100 at first, $75 if I bring an old 20 back, or $75 first, $50 with a core back? Lol, that was alot of responses! Thank you. Link to comment Share on other sites More sharing options...
Pete M Posted September 29, 2006 Share Posted September 29, 2006 The AMC 20 is most certainly an upgrade to the Dana 35. Some junkyards will not blink an eye if you bring in an MJ axle for a core that doesn't quite match the one you're buying. But the core charge means that thye will buy your Dana 35 from you for $25. I can't see how that's a fair trade since you should be able to sell a good condition 4.10 Dana 35 for more than that. I'd buy the 20 for $100 and then sell the 35 to a private party. Link to comment Share on other sites More sharing options...
mjeff87 Posted September 29, 2006 Share Posted September 29, 2006 It'll cost you $100 to get it out the door (75+25) If you bring them back an old axle, they'll refund you the core (25). Either way, it's a hell of a deal in my book. Even if you don't *need* it, you could always get it and resell it for at least 2X what you paid for it. Lucky dog....... :D Jeff edit: Pete beat me to it. But, on the core charge at my junkyard, they really don't care what you bring back, just so long as it's essentially the same thing (like if you had an old rusted up axle lying out behind your house, just so it was a rear axle of some kind. All my place does is sell it for scrap. But, YMMV... Link to comment Share on other sites More sharing options...
Pete M Posted September 29, 2006 Share Posted September 29, 2006 I am curious as to why that truck has the heavy duty rear axle, but not the heavy duty leaf packs. :hmm: Link to comment Share on other sites More sharing options...
mjeff87 Posted September 29, 2006 Share Posted September 29, 2006 Hey, on a side note.....if you do go get it, can you grab me at least one of those rear bumpstops (or both)? One of mine is AWOL :oops: The bolts will probably snap off inside the frame when you put a wrench on them but that's ok, I'll get new ones. Jeff Link to comment Share on other sites More sharing options...
mjtjnj Posted September 29, 2006 Share Posted September 29, 2006 Jeff- PM'ed you....you can have one of mine Pete, is the AMC20 a 12 bolt rear? I checked car-part.com and for 86 it lists the 35, the 44, and a 12 bolt with 4.10. ?? :nuts: Link to comment Share on other sites More sharing options...
Pete M Posted September 29, 2006 Share Posted September 29, 2006 I count 12 bolts on the cover, so I'm betting yes. It's not to be confused with the Chevy 12 bolt, which is completely different. Link to comment Share on other sites More sharing options...
Hot Rod Jeep Posted September 29, 2006 Share Posted September 29, 2006 I'm not sure about Jeep 12 bolts, but Chevy 12 bolts are actually called 12 bolts because of the number of bolts that hold the ring gear to the diff. I always thought it was the number of bolts on the cover, but I was told differently. 8) Link to comment Share on other sites More sharing options...
feerocknok Posted September 29, 2006 Author Share Posted September 29, 2006 I can grab you one if mjtjnj runs into a problem, but I'm horribly slow at shipping things. I didn't even know HD leaf packs existed. :nuts: Link to comment Share on other sites More sharing options...
Hot Rod Jeep Posted September 29, 2006 Share Posted September 29, 2006 How well do the HD leaf packs flex? Just curious. 8) Link to comment Share on other sites More sharing options...
whowey Posted September 29, 2006 Share Posted September 29, 2006 How well do the HD leaf packs flex? Just curious. 8) They don't. Link to comment Share on other sites More sharing options...
DirtyComanche Posted September 29, 2006 Share Posted September 29, 2006 How well do the HD leaf packs flex? Just curious. 8) They don't. Well said. And I have no idea how you guys manage to sell a D35. I had one with 3.07s and one with 4.10s. Both of them had to be given away - to the same guy - but the hitch was I also gave him a truck. The D35s were something I forced upon him. Link to comment Share on other sites More sharing options...
Pete M Posted September 29, 2006 Share Posted September 29, 2006 3.07 ones are only good for boat anchors and mailbox posts. 4.10s can be worth the upgrade in gears. But it is still a 35. :teehee: Link to comment Share on other sites More sharing options...
Hot Rod Jeep Posted September 29, 2006 Share Posted September 29, 2006 How well do the HD leaf packs flex? Just curious. 8) They don't. I kinda figured that, just wanted to make sure. 8) Link to comment Share on other sites More sharing options...
Hot Rod Jeep Posted September 29, 2006 Share Posted September 29, 2006 And I have no idea how you guys manage to sell a D35. I had one with 3.07s and one with 4.10s. Both of them had to be given away - to the same guy - but the hitch was I also gave him a truck. The D35s were something I forced upon him. I got $74 out of mine, but only because I sold it to a friend. 8) Link to comment Share on other sites More sharing options...
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