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8 inch

  1. 1967 Mustang 200ci rear end upgrade

    Classic Tech
    Hi all, I've been upgrading my mustang with a rebuilt inline 6 and been thinking about upgrading the rear end on the mustang. I believe it has the stock 2.73 gears in the back which makes acceleration pretty sluggish, so I was wondering what would happen if I added a 8 inch rear end to the car...
  2. 67 Cougar/Mustang rear end???

    Classic Tech
    I have a picture of the tag on my rear end and was wondering if that could be decoded to tell if it is an 8 inch or a 9 inch as well as what gears would be in it too. Here's a pic of the tag. Any info would be great! thanks!
  3. 8" and 8.8" Differential Parts Interchange?

    Classic Tech
    I have an 8" Dif with 2.79 gears and an AOD trans... way to high a final ratio. I was looking for a replacement ring and pinion, went to Summit Racing, and saw that the part# was identical for both the 8" and 8.8" ring and pinion! Anyone know if these two use the same ring and pinion (or is...
  4. 1966 Rear End Conversion

    Classic Tech
    25 years ago, the prior owner of my '66 hardtop replaced the original i6 with a 289 from a 1969 mustang (so he said). I think the conversion ended there. The car still has everything else as if it were still an i6 - brakes, rear end, 4 lug axles, worn out steering box etc etc etc. I just got...
  5. 1966 8 inch rear - need advice quick

    Classic Tech
    Hey guys, So i've drained my 8 inch, replaced the pumpkin with a rebuilt 8 inch with posi and 3.25 gears. So far i've pour a full gallon of gear oil in plus 4 oz of friction modifier. How much oil is it supposed to hold? I filled it with the drain plug facing up so i could pour it straight...
  6. traction lock id help

    Classic Tech
    Hey guys I picked up a traction lock today for a ford 8 inch/28 spline. Got it from a chevy guy who's brother gave it to him a long time ago when he owned a salvage yard. Wasn't going to fit in his nova, so I picked it up for cheap. Even though it's old, it looks brand new (he didn't think it...
  7. 8 inch vs. 9 inch build question

    Classic Talk
    Hey guys - I wanted to get some opinions as to whether this is worth my time or not to mess with: I'm building my '65 mustang, currently swapped in an 8 inch. Well, as time goes by and the build progesses, things are changing. I've been toying with the idea of "sometime in the future"...