10 Bolt under '70 Electra??

Discussion in 'A boatload of fun' started by LDPosse, Mar 7, 2007.

  1. LDPosse

    LDPosse Well-Known Member

  2. alec296

    alec296 i need another buick

    i dont think its the same as an 8.5 corprate
     
  3. Buick Power

    Buick Power Well-Known Member

    9-3/8 rears had 10 bolt covers from 66 or 67 to `70. 12 bolt covers after that. You would have to take some measurements for a `65 transplant, I am assuming it will be close. I know my `65 Electra rear has the type of rear that does not have a rear cover, but I think it is still a 9-3/8.

    P.S. the picture wasn't helpful, just going by what would have been in a `70 Electra
     
  4. lapham3@aol.com

    lapham3@aol.com Well-Known Member

    Yes-the 'drop out' rear ended in '65 with '66 the start of the 'integral' rear with a 10 bolt cover. There is always some confusion as it's the ring gear that has 12 bolts. The '70 rear may fit under the car, but there will likely be driveshaft length issues at the least-good luck
     
  5. SharpSabre455

    SharpSabre455 Sloan says "It's Rare!"

    Scott:

    I'm very familiar with 69-70 9 3/8" big car rear-ends, don't really know about pre-69 units.

    These rear ends have a 10-bolt cover, but the differential is actually a 12-bolt. In other words, 10-bolts outside, 12-bolts inside. They are very strong and replacement parts are almost impossible to find.

    Also- the cover on these rears are more "square" shaped that round. Hard to tell from your picture, but that cover looks round to me...

    Hope this helps...

    Paul II
     
  6. LDPosse

    LDPosse Well-Known Member

    Are the gears different than the other 12 bolts GM used? Are they as hard to find as other replacement parts?
     
  7. Buick Power

    Buick Power Well-Known Member

    YES. The fullsize Buicks ring gear is 9-3/8" the 12 bolt Chevy is 8-3/4" (it's just a little guy)
     

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