Quote:
Originally Posted by Oldsfan
Really? Where'd you find that? I'm not doubting you, I'd just like to know, 'cuz I don't want to be giving people the wrong information.
My '63 parts book shows the same number (583112) being used from '59 through '62. '63 is a different number (588142). My newer books are at work. That's why I posted the numbers, so I can refer to them when I get to work tomorrow. But they could all very well supercede to one number.
Paul
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I'll confess that I first got the 61-70 reference from the Fusick catalog, but since then I checked my Hollanders (40th edition, printed 1974) and they show 59-70 with 11" x 2" drums and 5 x 5" bolt circle all being interchangeable. Again, the Jetstar 88 with the 9.5" drums and 4.75" bolt circle don't interchange, and some of the 98s apparently don't either, but all the 88s do. That's not to say that the part numbers are identical. Some of these drums may have external ribs, some may be smooth, and some may use the dampening spring, but all are functionally interchangeable. If you don't care about total correctness, these will work. Hollanders also gives the prudent advice that the drums on both sides should match.
As I noted before, given the way GM uses common parts, I'm willing to bet a cold adult beverage that almost any 11" x 2" GM drum with the right bolt circle will work. That covers the 80-90 B-body wagons, Astro vans, and 88-91 half ton pickups with the 5 x 5" bolt circle.