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  1. SgtLee511

    72 489 case axle removal help!

    I cant get the axle out of 8.75 unit, it may have rusted since the other side was missing an axle. Question is, I removed axle outside cover nuts, the bell housing cover wont come loose, I know that some assemblies have a large adjuster nut on them, do i need to pry this cover back. We tried to...
  2. SgtLee511

    8.75 Rear Pumpkin Question 72 a body

    My 72 340 Duster has a small pinion 8.75 rear as most do, from reading here and there I thought the pumpkin chunk had a three digit identification, I have the casting number which ID'd it as small pinion. The only other marking i see is a X on the drivers side of the case. I plan to do gear...
  3. SgtLee511

    8.75 Rear Gear Change Question

    I have a 1972 Plymouth 340 Duster, this is has a untouched factory, 8.75 limited slip. Original 3.23 gearing. I am wanting to upgrade to 3.55 or 3.91, most likely 3.55's. I have no performance enhancement knowledge for this project. How much trouble is it to make this rear end a positraction...
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