OK folks here we go. I have a 1967 GMC long bed body, vin CS1590DPC9468A, sitting on a 1978 frame of what origin I do not know. The part number of the frame is 3888984-220. The date of the frame is 9 9 78. I have been trying, unsuccessfully, to find a rear leaf spring shackle assy. of the ones that I have either seen or orderd, they are all the wrong size. they will not fit into the mounting cup on the frame itself, the shackle is too big. additionally, the ears (on the shackle)that the leaf spring bolts to are spaced too far apart. I have been ordering for a 1978 GMC/C-10. what I would like to know is how do I find out exactly what type of truck this frame is from(ie: suburban, blazer/jimmy, pickup) so I can order the correct shackle assy. additionally, all of the parts manufacturers have been coming up with the same part number for the shackle for a 1978 GMC/C-10. it is 14022597. HELP!
I checked the part I emailed you and it is the same one you are getting from other suppliers. Craig Hager tech1@chevyduty.com
