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what rear end do i have

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Old 09-23-2011, 11:24 PM
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what rear end do i have

Here is what I pulled off the rear end housing: S31 3 50 9 5A14
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Old 09-23-2011, 11:25 PM
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S318d sorry on mobile
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Old 09-23-2011, 11:33 PM
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A 31-spline, Ford 9-inch with 3.50 gears.... it's a peg leg - no Traction Lok
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Old 09-23-2011, 11:39 PM
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I take it by calling it a peg leg its not a good rear end?
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Old 09-23-2011, 11:54 PM
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Originally Posted by 79CAMOFORD View Post
I take it by calling it a peg leg its not a good rear end?
He just means you'll only have one wheel with traction in a sticky situation since its an open diff.
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Old 09-24-2011, 12:01 AM
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Originally Posted by 79CAMOFORD View Post
I take it by calling it a peg leg its not a good rear end?
A Ford 9-inch is a tough rear end... even the NASCAR Sprint Cup cars (including the Yotas and Chebbies) run a Ford 9.

"Peg leg" is a euphamism meaning it is not equipped with limited slip (Traction-Lok). A burn-out won't tattoo the pavement with two beautiful stripes... just one lame one.

A limited slip or even a locker (PowerTrax or Lock-Rite) can be had for as little as $400 plus labor. The lockers mentioned above can be installed in the driveway and don't require removing the ring gear whereas the Traction-Lok does require disassembly and set-up.

Maybe even a better option is to hunt for the yards for a 31-spline center section with limited slip. If it has the tag, then look for an "L" between the gear ratio. For example, yours would have LS if the tag read 3L50. If you find one, it's a matter of disconnecting the driveshaft, unbolting the axles, pulling 'em out a hair, and then swapping the center section. A $5 tube of RTV and a couple of bottles of gear lube and yer there.

Side note... I think it's kind of ironic we're batting this thread around AND we're the only two FTE'ers in the Dentside forum currently wearing camo schemes. Check my garage and you'll see.
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Old 09-24-2011, 12:04 AM
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the factory limited slips are clutch type. At this point, most are worn out and you don't get reliable performance from them. They are better than nothing, but the open carriers are easier to weld solid, which is what I'm ready to do to mine.
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Old 09-24-2011, 07:10 AM
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spools can be had cheap and work very well
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Old 09-24-2011, 10:51 AM
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Thanks guys ill keep an eye out for the limited slip
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Old 09-24-2011, 12:15 PM
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Quote:
Originally Posted by 79CAMOFORD View Post
Here is what I pulled off the rear end housing: S318D 3 50 9 5A14
When 8D is typed together, the smilie face appears, unless you 'disable smilies in text' like I just did.
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Old 09-24-2011, 02:32 PM
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my axle has a smiley face stamped into the housing....
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1972, 350, 77, 9, car, compleat, cup, differential, end, f150, ford, gears, inch, lock, nascar, rear, rearend, sprint, traction, truck

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