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I need to know which part number on the rear shock/strut mount is for the left side and which is for the right side. When they were removed, they did not get marked. The numbers cast into them are 3820929 and 3820930. The mount with the 929 number has a number 2 on it and the mount with the 930 number has a number 1 on it.
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
James,
Typically, GM part numbers that end in an odd number are for the left/drivers side of the car, and even numbers are for the right. This is almost always the case with a few rare exceptions.
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
You might want to make sure they are original before you spend the time and effort putting them back in. Replacements have been around for years, and have the same part# cast into them. They are angled along the outer edge of the side that the shock mounts to. Originals are straight in this area.
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
James------
These are the correct shock mount shafts assuming that the car does not have F-40/F-41 suspension. If it does, different shock mount shafts were used. I will be posting some information with photos on this very subject sometime in the near future. I've been meaning to do it for a long time, but I just have not gotten around to it. There are several other subjects I've been promising to and meaning to post info on, too, and I haven't gotten around to those, either. But, I will do it "soon".
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
Hi Rob:
Can you clarify the difference you are describing, or post a photo? I was not aware of any repro parts that have the correct casting numbers. I have two sets here that I thought were original (one of which was on my car and seems likely to be original), but I need to better understand the feature you are describing.
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
Joe,
It just so happens that there is a set of shock mount bolts on ebay item#8031034008, with one being original and one not. You can see the difference between them, the one that is straight on the outer edge being original. Both, however, have the casting#.
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
Joe,
While the angled shock mounts are not original for '63-'67, they may be for later years I'm not familiar with. Evidentally the mounts fit all the way through '82.
..... that is, part #'s 3820929 (LH) and 3820930 (RH). The Sp./Per., Sp./Susp. were #'s 3829265 (LH) and 3829266 (RH), and were straight -- must have had something to do with the travel or geometry of the F40/41 shocks). I will offer to email jpegs of the standard suspension 929 and 939 showing them side-by-side; (hopefully someone with a hosting site can link for those interested to see).
(To James W.) Should be no problem to re-install, regardless of cast numbers. The shaft is machined with a flat in the area of the nut threading, and the bearing assembly has a matching flat on the arm of the rear-most hole; so you can't install the wrong one on the wrong side, or the shock-eye stud will point towards the wheel, instead of inward.
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
Hi Rob:
Mine look like the one on the top in the ebay photo. Is that the one you consider to be correct?
I can't read the casting numbers on either part in the ebay photo, but I would be very surprised if they are the same. Have you actually seen mounts shaped like the bottom one in the photo that had the 3820929 and 3820930 casting numbers? I have seen other mounts with different numbers, but I do not recall how they were shaped.
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
Joe,
The one on top is original. I don't have any to look at now, but I'm almost positive I have seen the other shaped ones with the ..929 and ...930 casting numbers. I think Paragon carries them, as well as others. There are usually some on Ebay.
Did you mean to say that the "straight" shape was original. I've removed them from several original '66 and '67 cars, including the ones on my present '66, which I know has never been apart, and they were all straight.
Ebay item#460688354, shows one of each shock mount you describe. It looks like I was wrong about the angled one having the same part#. The original, standard mount is, however the straight shaped.
Re: '65 Shock/Strut Mount LH and RH Part Numbers??
Rob------
The one on the top is a GM #3829265/6; the one on the bottom is a GM #3820929/30. The upper one was originally used for F-40/F-41/FE-7 only. The lower was used for all standard suspension.
I offered to post Wayne Midkiff's photos for him. He sent two photos, which I will attach to two different postings. The photo below shows the profile and casting numbers for the '929 and '930. These are identical to what was on my 67.
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