1967 Lower Control Arm Rubber Bumper Mount Hardware

[Richard M.]

I am seeing conflicting data regarding the orientation of the 3784302 Bolt Assembly and 102634 Nut which holds the bumper to the control arm. AIM UPC 3 A3 shows the bolt assy passing downward through the metal bracket of the bumper with the nut under the control arm.

The JG makes no mention of orientation, however the photo(C-30) shows the nut facing the sky.

I have seen and disassembled original rubber bumpers on many cars. The orientation matches the AIM.

Here is one example. If you have examples of others please respond.

[Edward J.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Rich, I pretty sure the nut faces the ground. as you know, maybe a error?

[Stephen L.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

My original bumper installation was with the nut on the top side. When I reassembled after restoration I installed with the nut down. Never gave it a thought... As I understand, the suspension was assembled at the factory with the frame upside down. This could cause the worker to install the bolt in a downward orientation and when the frame was flipped upright the nut would be on top. Just my opinion......

[Jim D.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Although your question is referring to 67's, I don't think 65's would be any different. The 65 A.I.M. shows the nut on the bottom. The 65 Judging Guide has pictures showing both ways and states " The attaching bolts were designed to be installed with the heads up, but original cars have been observed both ways". I have 2 original, untouched 65's and one car has the nuts on the bottom, the other has them on the top. Obviously it made no difference to the person assembling them 50+ years ago.

[Richard M.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Thanks Gents,

However, We have seen deductions recently for the AIM way. Trying to get their reasoning why. I'm not near my 63,64,65,66 JG's and now wonder if those are specific or not.

Rich

[Leif A.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Richard,
When I did mine several years ago, the nut was on the top of the original setup. I checked with the 1966-1976 Corvette Shop Manual and the 1967 Chassis Service Manual and they had it pictured that way, as well. So, I reinstalled with the nut on top.
P.S. In the 1967 Chassis Manual it shows that same configuration for ALL Chevrolets that year.

[Ara G.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Rich, my December build Silver 67 California coupe has never been touched chassis-wise and has the nuts on top. ARA

[Peter M.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Rich,
My April built 67 had the nut on the bottom. I don't think they had ever been removed, but I can't sat that with certainty.
Kind regards

[Stephen L.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Leif, The bolts in question are those that hold the rubber bumper on the lower control arm, not the stabilizer bar. Your photo shows the bolt down; nut on the bottom.

[Jim D.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Thanks Gents,

However, We have seen deductions recently for the AIM way. Trying to get their reasoning why. I'm not near my 63,64,65,66 JG's and now wonder if those are specific or not.

Rich

The 67 Judging Guide should updated to reflect what the 65 Guide states. Either way SHOULD be acceptable as there are many examples of originals being either way. The judge that made the deduction is out of touch with reality and obviously has no real world experience regarding this topic.

[Leif A.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

Leif, The bolts in question are those that hold the rubber bumper on the lower control arm, not the stabilizer bar. Your photo shows the bolt down; nut on the bottom.

Stephen,
I re-read Rich's original post and you are absolutely correct. Thanks for correcting me.

[Steven B.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

This is a '67 Coupe, June 23rd car, fight judged '89 and '91 (Top Flight both times. Regional in Colorado and Regional in Arizona). Previous owner owned the car from 1992 until 2012. He put 2,000 miles on it in 20 years. It had 33,094 miles on the odometer in 2012.

Steve

[Don H.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

First time I have ever seen the anti-sway bar linkage bolt head up, and nut down. And linkage washers between the bushings and the bar eyelet.

[Steven B.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

First time I have ever seen the anti-sway bar linkage bolt head up, and nut down. And linkage washers between the bushings and the bar eyelet.

It's been off before. Shouldn't have the additional washers. The previous owner didn't do any of his own work. There have been a few things that I have had to correct.

Steve

[Jim D.]

Re: 1967 Lower Control Arm Rubber Bumper Mount Hardware

First time I have ever seen the anti-sway bar linkage bolt head up, and nut down. And linkage washers between the bushings and the bar eyelet.

Both my 65's and my 60 are "nuts up" on the sway bar links.