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« on: February 29, 2016, 03:44:42 AM »
While going through my parts bins today, I found a set of NOS subframe bushings, that I forgot I had. Due to the fact that I needed them for my 69 I took them to the house and checked the numbers against the 68 and 69 AIM. After checking all the numbers to make sure they were all correct, I discovered a difference between 68 and 69. I have always heard, especially from the parts vendors, that they were all the same, and never doubted it, or had any reason to look. They were all the same except two parts.
Here are the differences I found. The #3 mount location, (under the front seats) are #13, 3901361, which are also the same for 68 and 69, but the mate cushion (donut), #10 3914802 for 68 and #15 3962720 for 69.
So, my questions are:
Has anybody ever compared between these two bushings 3914802 and 3962720, to see if they are actually different?
I know GM was notorious for changing the part number for the slightest change or difference. Are they different enough to seek the correct part between these two?
Also, I noticed that part# 3893156 core support bushing was replaced with 14008366. Are these parts that have been changed deemed INCORRECT for restoration purposes? You might be able to see the numbers that are different.
Thanks,
Bryan