Tru-Trac Diff w/FRPP 4.10's

DLF

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Tru-Trac Diff w/FRPP 4.10's **SOLD**

If there's any interest in this, please let me know.

I have all the parts in my garage to put this together, I just haven't done it yet. I was planning to replace the True-Trac/4.56 pumpkin in my Cobra when I install the aftercooled Vortech and forged short block that I have, but that project has been delayed a bit.

$800 in new parts:

New 912A562 True-Trac differential (no clutches to wear out).
New FRPP 4.10 gear set.
New ARP ring gear bolts.
All new Timken bearings and races, and OEM Ford seals in a used Cobra carrier housing (I have all the correct tools to install the races and seals properly).
New ARP Carrier studs and nuts.

This is not my first differential build, I have the same setup in all three of my cars, just with different gear sets.

$900 + shipping.
$1,000 installed (Forked River, NJ).

It'll take me a day or so to put it together (I may have to hunt up a pinion flange, as my Cobra driveshaft uses the larger 1350 flange).

This would also be a good opportunity to upgrade to a LPW differential cover and ARP stainless steel cover bolts (2 packs required) as pictured below (installed in my LSC).

HPIM0369.JPG


HPIM0040.JPG


ARP 612-1250.jpg
 
Last edited:
It will all work in an LS. Just need 1st gen LS axle shafts, a custom front brace, and a custom drive shaft.
 
It will all work in an LS. Just need 1st gen LS axle shafts, a custom front brace, and a custom drive shaft.

I'll defer to your experience, but I will only install it in a Mark VIII. ;)
 

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