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  1. rusty

    8 3/4 Gear pattern

    I picked up a 489 case with Auburn cone posi for a good deal I thought. Took it apart to inspect because the yoke was off, it has a crush sleeve eliminator in it and 2.91 gears. The pinion has been ground on but wasn't planning on using anyway. The pinion turned with basically no preload when I...
  2. rusty

    Any transmission gurus

    I asked this over on the truck forum this morning and haven't had any hits so i'll ask over here-I am having the transmission in the old Winnie rebuilt and was doing some research. Question is there are several kickdown levers for the band in different ratios,which one will work best for the RV...
  3. rusty

    8 3/4 questions

    I've got a 742 case suregrip I am putting new clutchpack and bearings in.I have been reading through posts on how to set backlash and pinion depth but haven't seen anything on a pinion nut torque spec.Also seems to be different opinions on side bearing preload,75 ft lbs or just tight with the...
  4. rusty

    Got lucky

    I think,found a 3.23 suregrip at U-Pick-It just got the third member.For cheap!BUT the car I took it out of looked like it had been sitting in someones shop that burned down the car was toasted!! 1967 B body when I pulled the drums off the shoe liners just fell out.And this piece in the pic came...
  5. rusty

    Another 8 3/4 question

    Does any one have a empty a-body housing to measure? I got one at a swap that is supposed to be cut to a-body length.I get 53 7/8 is that right? I also got a b-body rear end for the chunk and brakes.Thanks,Todd
  6. rusty

    Rear ends

    How many different rear ends did they use in a-bodies
  7. rusty

    rear end width?

    I measured my stock rear end drum face to face with c-clamps and angle iron,got a hair over 57".Any body know what pre 70 b-body measures drum face to face? 67 Belvedere complete re inc. leaf springs $3oo guy says it will fit moving the perches.
  8. rusty

    Sbp to bbp ? 8 3/4 question

    What do you have to do to an 8 3/4 to change from small bolt pattern to large? Is it just a axle and drum swap or is there more?
  9. rusty

    8 3/4 chunk question

    what is the difference in casting # ie 489 741 and so on,strength,gears available or what? Found a complete rear end from a 69 dart w/741 case and a 69 dart is what i am putting it in.Thanks.Todd
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