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-   -   1987 Rear swap help (https://67-72chevytrucks.com/vboard/showthread.php?t=580043)

remist17 05-13-2013 10:14 AM

1987 Rear swap help
 
Need some help. I have a 1987 chevy R10 10 bolt 5 lug rear and I want to swap it out with a 1976 Chevy 12 bolt 5 lug rear out of a C10.

Can anyone tell me the U Joint spec sizes for these? I am coming up with the dimensions but not the diameter of the caps.

1987 - 1.13X1.13 2.37 x 2.37 outer
1976- 1.06x1.06 3.22X3.22 outer

I am assuming this are not interchangable and I will need a special u joint for them...

66skylarkpost 05-13-2013 06:39 PM

Re: 1987 Rear swap help
 
there is a conversion u-joint (precision is #372, spicer is 5-3022x ) you'll need .you will also need a longer driveshaft i believe, like an inch

remist17 05-15-2013 12:35 PM

Re: 1987 Rear swap help
 
hmm
that stinks. I thought these were drop ins for the 1/2 ton trucks. Thanks for letting me know.


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