I picked up a rear end and was told that it came from an 86' 5.0. I know it is 4-lug and possibley a 7.5 but not sure. Could anybody help with de-coding the tag # ?
201A
2SL73A887L19
Thanks!
201A
2SL73A887L19
Thanks!
Rear End De-code ?
- Thread starter Bad67MF
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Are you sure 8.8? The bolt pattern has 10 bolts, 2 of them are in the center up and down like the pic's I se of 7.5's. And not in the center from side to side like the pic's of the 8.8. Thanks for your help. I am going to sell this and just don't want to misrepresent it.jb89coupe said:
bryanrevans
New Member
86 was first year of 8.8 wich is 10 bolt pattern.Maybe thats not 86???What part of tag lets you know its 2.73
2SL73A887L19 = 2xx73x88xxxx = 2.73, 8.8"bryanrevans said:
This method is from some website I stumbled on a while back, so I guess there's a chance it's wrong, but it's been right every time I've used it. I'll dig through my favorites folder and see if I can find out what the other stuff means too.
Michael Yount
Mustang Master
The gear ratio is easy - just rotate the pinion flange and count the ratio of pinion turns to one turn of the axle. So many of these have been modded that I wouldn't trust the part number to indicate the gear ratio that's in the housing anyway. While you're spinning things - rotate one axle and watch the other. If the other axle rotates in the same direction, you've got a working traclok. If the other axle rotates in the opposite direction then you've either got a non-working traclok, or you've got an open diff.
Michael Yount
Mustang Master
That's great JB66 - clear and easy to understand. That should help with the 8.8 vs 7.5 part. Only helps with the gear ratio if you know the entire history of the rear end and that it's never been re-geared.
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