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  1. 1970Duster

    Sure-Grip or Not

    Did you ask if he had one with a crush sleeve eliminator installed?
  2. 1970Duster

    73 Duster 8.25 Differential

    You can easily upgrade to rear disc brakes with the 8.25 rear. Just pull the setup for a jeep grand Cherokee.
  3. 1970Duster

    727 vs 904?

    Just look up Mopar To Ya's thread about the install of the 200R4 in his dart. His dart has a 408 (or 416) with a Dana 60 out back (gear ratio I can't remember) and he loves the transmission. The only time I think it would be detrimental to install one is if you have a perfectly good/just...
  4. 1970Duster

    727 vs 904?

    Yes the 200R4 came in the grand national/Gnx.
  5. 1970Duster

    727 vs 904?

    Neither. Go with a GM 200R4 (2004R whichever you prefer to call it), lighter than both and you gain an overdrive gear so you can use 4.10 gears out back and not drive yourself insane while on the freeway. Plus the 200R4 is all hydralic! And yes this trannies can live behind high hp/TQ motors...
  6. 1970Duster

    72 489 case axle removal help!

    Does the axle itself turn?
  7. 1970Duster

    Rear end swap

    Okay lacking a little about what you have but here goes. What rear end do you currently have in your car? If you have the 7.25 rear, they also made a 7.25 big bolt pattern axle as well If you have the 8.75 (unless you're going to a Dana, why do you want swap it?) just call dr. Diff and order a...
  8. 1970Duster

    8 3/4 center sections

    Bearings maybe
  9. 1970Duster

    68 baracuda 8.75 upgrade

    73 and up (from the factory) are only going to be 7.25 and 8.25
  10. 1970Duster

    rear end question (car not me)

    Look for the a 96 or older jeep grand Cherokee. This will have the same spline count as your 8.25 year. You can hear the better gears (ratio wise), sure grip unit and rear disc brakes off the car. It will all bolt right into you a body 8.25 rear. Just make sure your a body rear has 2.94(2.91s?)...
  11. 1970Duster

    489 case question

    Yes, also do yourself a favor an install crush sleeve eliminator.
  12. 1970Duster

    Rear bearings, green vs timken

    The one you prefer the most.
  13. 1970Duster

    Good oil for differential?

    Mobil 1 full syn with the limited slip fluid added.
  14. 1970Duster

    7 1/4 rear diff question.

    8.25 simple upgrade and a very simple rear disc brake setup for it as well.
  15. 1970Duster

    New Rear Gears

    What does your cam require? What transmission are you using (and stall if auto)? What do you plan on doing with the car? 3.55 is a damn go balance between take off and cruising! Also know that you can now get 3.73 gear ratio for the 8.75 rear (which I'm assuming you have/are using), which also a...
  16. 1970Duster

    Mopar A Body Overdrive Conversion

    A 200R4 can take a LOT of hp when built right. You can install a 200R4 with no floor cutting but do have to make a small cut to get it to fit. Just look up the thread by Mopar To Ya. He installed on in his Dart Sport. Also with the 200R4 its all HYD which is big plus over the 700R4.
  17. 1970Duster

    How universal is the 7-1/4" axle

    The 7.25 rear is a piece of crap. Better to upgrade to a 8.25 or 8.75 or a Dana 60. But yes the 7.25 can be different, there is a sbp and BBP version which the BBP version is wider. There is also a suregrip (limited slip) unit that can be installed in one. My vote would be the 8.25 rear and...
  18. 1970Duster

    T5 swap to a 225 Slant 6?

    Check with Wilcap, they might already have it or could make it for you.
  19. 1970Duster

    8.75 binds

    Did you remove the pin prior to installing the axles? That pin isn't used with green bearings.
  20. 1970Duster

    7.25 axles

    It's better to just swap the axle to a 8.25/8.75/Dana 60 than keep the 7.25. Just Sayin.
  21. 1970Duster

    /6 to 360 and rear swap drive shaft length?

    Depends on what transmission you have
  22. 1970Duster

    Reality check: A body rear ends

    4 weeks ago (the last time I went).
  23. 1970Duster

    Reality check: A body rear ends

    The one thing the 8.25 rear has over the 8.75 rear is a very easy/simple bolt on rear disc brake upgrade from a Jeep grand Cherokee.
  24. 1970Duster

    gear ratios

    Thats the beauty of it really, you don't actually have to find that! You can find an 8.25 rear from a 73+ A body with a 2.94 (or better, the 2.71 and down use a different housing), find a 96 older Jeep Grand Cherokee, remove the rear diff cover and if it has the better gears you want (lets say...
  25. 1970Duster

    gear ratios

    I wouldn't put a single penny towards a 7.25 rear. Just upgrade to an 8.25 (which can handle some pretty good power!) which you can find a much much better gear selection and easier to find sure grip unit. You can also, very easily, upgrade to rear disc brakes on a 8.25 with bolt on parts from a...
  26. 1970Duster

    7 1/4 rear end

    Do waste you money on a 7.25 rear. 8.25 will work even better. It's what I'd do.
  27. 1970Duster

    7.25 to 8.25 swap? /6 to 318 swap?

    Just to let you know that a slant 6 transmission has a different bolt than a small block transmission so you'll need to acquire a small block 904 transmission (not that hard).
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