3R-83-268 GM 3R Series Double Cardan CV Flange Yoke fits late 60's to early 70's GM CAR DRIVESHAFT CV with inside C" clip u-joints"

3R-83-268

Fits Late 60' to early 70's GM 3R series Car Double Cardan CV Driveshaft with inside "C" clip u-joints

• Double Cardan CV flange yoke 3R Series to replace original equipment Late 60' to early 70's Buick Olds Pontiac and Cadillac
• Comes with ball and socket centering parts.
• 3R-83-268 has a RECTANGULAR bolt pattern
  • 2.687 x 2.937 inch cl of bolt holes
  • NOTE: This does not fit the newer 3R series driveshaft with the square bolt pattern 3.0 x 3.0 inch cl of bolt holes
• Bolt Circle.... 4.25 inches measured diagonally
• Pilot Diameter... 3.125 inches
• Requires Inside "C" Clip style 3R Series u-joints listed below
  • 3R series original equipment universal joint would have been held in place by injected plastic

YOU MUST measure the bolt hole CL to CL to determine if you have the SQUARE or RECTANGULAR bolt pattern before buying this part.

NOTE: DOES NOT FIT driveshafts the driveshafts where lockup surface was not machined to accept "C" clip

• Prior to 1973 many GM double cardan driveshafts were non serviceable because the inside surface of the yokes where the new "C" clip would lock in the new u-joint was never machined flat. Easily identified by looking carefully to see if the inner lockup surfaces of the stud yoke, H-Yoke and flange yoke are rough and not machined flat.
• You cannot connect new parts to an OEM stud yoke that was never machined to accept a "C" clip. If you have this then it would require a new stud yoke to be welded to the tube and a new cv head.