So the brackets are the same for either bar according to the parts book and from what I recall when I've put on bigger bars I've never changed brackets.
The bushings are 3943084 from GM, long discontinued. You can find them NOS from time to time but they usually get a good buck. The aftermarket makes the bushing but they don't mold that ridge into the bushing that fits into the groove on the bracket so I suspect they will slowly slide out the side of the bracket. I welded little tabs on the sides of the brackets to prevent that on one of the big bars I installed.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
The brackets are the same regardless of sway bar diameter. The bushings are different.
Moog K5227 for 13/16" bar - readily available,
Moog K8258 for 15/16" bar - difficult to find, but occasionally pop up on eBay.
The brackets are the same regardless of sway bar diameter. The bushings are different. Moog K5227 for 13/16" bar - readily available, Moog K8258 for 15/16" bar - difficult to find, but occasionally pop up on eBay.
Yes but the outside of them is smooth, missing that molded ridge on the outside that fits in the channel in the bracket . Even the GM originals that include the ridge push out of side of the bracket so I'm betting the smooth ones push out sooner/faster. But it's better than nothing!
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
Thanks guys, very good info. Needed a brain reboot on the subject.
Anyone have a part number for a replacement that would work on the 15/16" bar. Rock auto seems to only have a bushing up to .78 ID
On the 67 I just went with A set of Prothane universal greaseable bushings and shells, which required a second hole be drilled either side at the mount.
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65 Laurentian post, 67 Grande Parisienne 4 door HT.
Would work, problem being Robert is that the original bracket holes are offset.
Carls Idea of welding retainer tabs onto the OEM bracket is a good one. But now who has a 15/16 OEM bushing? Even a china one without the retainer bump.
Found these shots on line, a clever fellow simply cut and some 3/16 plate and added them to a straight aftermarket bracket drilling them appropriately offset. I'm not adverse to using greaseable poly in this position.
Would work, problem being Robert is that the original bracket holes are offset.
Carls Idea of welding retainer tabs onto the OEM bracket is a good one. But now who has a 15/16 OEM bushing? Even a china one without the retainer bump.
Found these shots on line, a clever fellow simply cut some 3/16 plate and added them to a straight aftermarket bracket drilling them appropriately offset. I'm not adverse to using greaseable poly in this position.
I forgot that the holes were offset. So much for standardization of the bracket/bushing set up. Changes in parts that could be used across other models, makes no sense to me.
Still on the hunt, we are now seeing three 63-67 C2 corvette bushings online with that unique ridge. A poly 15/16" listed as a C2 F40 BB part, and the 7/8" and a 3/4".
And we see GM listings in the big car MPC for a 3/4 and a 7/8" bar. Described as the hole size in the bushing. Nowhere is a 15/16" bar mentioned in the MPC, in fact I can only find one bar listed?? And the B part numbers don't match the GM vette number so far.
Is our big F41 bar to be described as 7/8? I realize a 15/16 bar would squeeze into a rubber 7/8 bushing.
Now could these C2 parts be close enough? Certainly looks close to the B body part.
Limitless of examples on line for the vette parts,
Those sure do look right and I bet for the 1/16" difference they would likely be fine.
And yes, the parts books all say 7/8" as far as I've been able to find but we know the bar in real life is 15/16". Odd that they do it that way but it must be a case of one hand not knowing what the other one is doing type of thing.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
I saw the ridged bushings for the Corvettes and thought the same thing, Mark. But then I noticed the ridge was down the center of the bushing, unlike the angled ridge on the 69 B-body. There are lots of cars that used a bushing with a center ridge including Nova, Camaro, and Firebird. Again, why all the differences in a little bushing?
