i currently had a 10 bolt in my 1971 buick skylark i swapped in a 12 bolt out of a 1969 chevelle and the yoke on the 12 bolt is to small for the couplers off my u joint on the original driveshaft its stock with the u joint that was on the car for the 10 bolt.. so i need a smaller u joint for it to work or can i swap my yoke out of the 10 bolt and bolt in my 12 bolt???
there is what is called a combo joint available. call a local driveshaft company.thet will be able to supply you with what you need.
Very common problem. The conversion u-joint has smaller cups on one axis, and bigger cups on the other. According to my Guide to GS Buick book by Steven Dove, the part numbers are Neapco 3-3130, or Precision #372. http://www.ebay.com/itm/New-3-3130-...pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr http://www.summitracing.com/parts/PCN-372/ BTW, if you removed the original 8.5 10 bolt rear and it was good, you can probably easily sell it here. That's a good sturdy rear with bolt in axles.
Re: Thank You Thank you for all ur help guys i got it all in last night and painted the driveshaft and rearend with a nice ta cover and the 8.5 10 bolt is for sale has 61,??? miles on it bought the car 6 years ago from an old librarian its a 2 door 71 skylark coupe i love it sooo mmuch the new rear end is a fully built 12 bolt with 35 splines and 373s and the carrier was all redone and painted it with par45 black looks sooo sexy... 10 bolt is for sale with all new drum brakes if any body is intersted let me know i will not say how much not looking to make a killing if someone can use it to make there project get done faster shoot me an offer thanx
