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Id cars/trucks with 8 3/4 SG rear axle ? #442777 08/19/09 11:31 AM 08/19/09 11:31 AM
Joined: Nov 2008 Posts: 32 NM B bobdng OP member
bobdng OP member B Joined: Nov 2008 Posts: 32 NM	Hello all, I've got an 8 3/4 rear axle out of a 73 D-200 truck. I'm going to install it into an 80 D150. The current axle is an 8 3/4 489 case unit, open rear. I'm going to go junkyarding and see if I can find a center section with the clutch type SG in it already. Rebuild that unit and put in my axle. Which code should I look for to save crawling under cars/trucks in the junkyard ? I did take a look in the tech section and didn't find anything on it. Thanks.

Re: Id cars/trucks with 8 3/4 SG rear axle ? [Re: bobdng] #442778 08/19/09 12:43 PM 08/19/09 12:43 PM
Joined: Jan 2003 Posts: 8,016 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,016 Polson, MT	There are no codes that designate sure-grip. Once in a blue moon, you may find a sticker on the door that reads "T/C lock". Contact info

Re: Id cars/trucks with 8 3/4 SG rear axle ? [Re: DoctorDiff] #442779 08/19/09 12:51 PM 08/19/09 12:51 PM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger master
RemCharger master Joined: Nov 2004 Posts: 2,825 Sk. Canada	the 60s trucks said suregrip right on the doorpost plate. Not sure when they stopped that. usually 4.10s or 3.55s.

Re: Id cars/trucks with 8 3/4 SG rear axle ? [Re: RemCharger] #442780 08/19/09 01:11 PM 08/19/09 01:11 PM
Joined: Jan 2003 Posts: 8,016 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,016 Polson, MT	Some half ton trucks had "sure-grip" tags on the third-member. Occasionally, the doorpost tag designated sure-grip with the wording "TC lock". Most half-ton trucks equipped with traction differentials did not have any designation, however. Contact info

Re: Id cars/trucks with 8 3/4 SG rear axle ? [Re: DoctorDiff] #442781 08/19/09 01:13 PM 08/19/09 01:13 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: Some half ton trucks had "sure-grip" tags on the third-member. Occasionally, the doorpost tag designated sure-grip with the wording "TC lock". Most half-ton trucks equipped with traction differentials did not have any designation, however. Cars had the tag too. Clutch type was only available through the 68 model year. But that is not saying that someone hasn't put one in a new model. Check this out: http://cgi.ebay.com/ebaymotors/MOPAR-REA...d=p4506.c0.m245

Re: Id cars/trucks with 8 3/4 SG rear axle ? [Re: MoparforLife] #442782 08/19/09 01:25 PM 08/19/09 01:25 PM
Joined: Jan 2003 Posts: 8,016 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,016 Polson, MT	Clutch sure-grip designation: 1958-early '60s: Car or truck sure-grip had ratio and "S" stamped into pad at bottom of third-member casting. Early '60s-1968: SOME trucks had round sure-grip tag bolted to third-member stud (most didn't) MOST cars did MOST vans did Contact info

Re: Id cars/trucks with 8 3/4 SG rear axle ? [Re: bobdng] #442783 08/19/09 09:23 PM 08/19/09 09:23 PM
Joined: Nov 2004 Posts: 5,118 Alone in the darkness gamagoat6x6 super street
gamagoat6x6 super street Joined: Nov 2004 Posts: 5,118 Alone in the darkness	1967 and 1968 cars will tell you on the fender tag under the AX code. There will be a single digit number and if it`s followed by an X the car was originally equipped with a clutch SG. This applies to `67 and `68 ONLY. The number gives you the ratio. `02 RAM2500 SPORT V10 4x4 `06 GMC sierra NO cars

Re: Id cars/trucks with 8 3/4 SG rear axle ? [Re: gamagoat6x6] #442784 08/20/09 08:28 AM 08/20/09 08:28 AM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	got to remember,they have not made a 8 3/4 since 74,and by now any thing could have been swaped in to it.. Its all ways best to pull it and have a looky see I have found 8 3/4s in stuff that did not come stock with it,I have found sg in stuff that you would not think needed it,and I have found them to be swaped around a lot over the yrs check them all IMO suregrips could be orderd by the first owner,and not across the board for that line of vehical Last edited by scratchnfotraction; 08/20/09 08:30 AM.

Re: Id cars/trucks with 8 3/4 SG rear axle ? [Re: gamagoat6x6] #442785 08/20/09 12:19 PM 08/20/09 12:19 PM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: 1967 and 1968 cars will tell you on the fender tag under the AX code. There will be a single digit number and if it`s followed by an X the car was originally equipped with a clutch SG. This applies to `67 and `68 ONLY. The number gives you the ratio. Yep, '67-68 have the AX code on the fender tag. If it is a double digit, then it has a sure grip (second digit under the X is almost always an 8). 1 = 2.76 18 = 2.76 w/SG 2 = 2.94 28 = 2.94 w/SG 4 = 3.23 48 = 3.23 w/SG 6 = 3.55 68 = 3.55 w/SG 7 = 3.91 78 = 3.91 w/SG Jimmy

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