I Have a 1955 series 2 3600. I have been reading about the rear end swaps
from a 68-72 3/4 ton truck. Well I did it and it does work. I found a 1970
GMC suburban which is 4 wheel drive, I first pulled the axles, then the center
section out. I really luck out on the center section....it is a 3.93 posi.
When I got home I pulled the axles out of mine, and they exactly the same
size and same spline as the 70 sub. Next i pulled my center section out
cleaned out the old gear lube, and bolted in the new center section...it
went right in. Both set of Axles will slide right in, so i have a spare,
but it all fits.
I still need to get some posi oil and put the drive shaft back in, and
drive it, but I dont think that will be a problem. Any way it does all fit
real nice, and I want to thank everyone on here for the postings on it.
Bill
1955 2nd series 3600
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