I'm trying to determine if any and what the differences are between door and windshield post for 56-62 cars. I have a 57, 59 and 62 and know what came of each car, just not sure if they were original to the car because of other parts differences. So if I can swap them around between my cars to make them correct, I would.

I have a 59 that came with 3754011 and 3754012 ( but the header didn't have holes for sunvisor and the conv. top frame was a '58). From what I've read, these may be for a 61/62.
I have a 57 that came with 3723247 abd 3723248 ( but the header did have holes for sunvisor). From what I've read, these appear to be correct for a 56/57. The windshield post has 37163 on one of them.
I have a 62, but will not have the part back from plating for another week or two do don't have numbers off these yet.
The other part numbers in play for door posts are 3762557 and 3762558.

This thread kicked around the subject but only clarified the 56/57 door post numbers.
https://www.corvetteforum.com/forums...fo-needed.html

I don't have an AIM, so can't look this info up there.

So, can anyone definitively clarify what part numbers go with what year car and what differences there may be other than the way the weather stripping runs up the door posts? Are all the windshield posts the same for 56-62?
Thanks in advance.

 

Hopefully someone will correct me if my info is not accurate, Many years ago Roy Bratz told me my 011 and 012 posts were correct for my May 1958 build car. And, since 58 did not have sun visors the header did not have holes for them. The 58 AIM shows the posts as 3762557 and 3762558 which I tend to believe were used for 59-62. I say this as the 58 AIM page is dated Aug 5, 1958 and most likely was the new drawing released for 59 production even though the page is inserted in the 58 AIM. I am betting the removed 58 AIM pages would have shown the 011 and 012. This would somewhat explain the three different designs that Roy spoke of without giving any of us any clue as to part numbers. The 56-57 used the part numbers John Z mentioned in his response to the referenced thread, the 58 used 011 and 012, and the 59-62 used the 557 and 558.

If your 59 is a very, very, very early 59 it might be possible that some 011 and 012 made their way to 59 production...I don't know this just saying? Bill

 

My 59 built on 01/06/59 has the 3754011LH & 3754012RH door posts, but I have no way of knowing if they are original. My 59 AIM dated 06-08-59 lists 3762553LH & 3762554RH for the pillars. I have another 59 AIM dated 08-13-58 that also lists 3762553LH & 3762554RH for the pillars.

 

Ken,
The windshield posts are all interchangeable. The only difference being the stainless header cover for the posts that have the holes for the sunvisors. If you have later posts (with the holes), they would be covered by the earlier stainless, and therefore could be used.

On the door posts, there are many variations. BTW, the numbers shown in the appropriate AIM's, ARE NOT PART NUMBERS, BUT CASTING NUMBERS. John Z posted that information years ago. The basic breakdown is 56/57/58, 59/60, 61, and 62. The differences are at the top of the door post. ALL of them are interchangeable, but you have to use the correct door gasket, which has the correct top. The 56-58 has one top, the 59-60 another, the 61/62 use the same rubber, but the front of the 62 post is smooth (not serrated). If you do some searches, you'll see the differences.

 

Barry and Ken, cannot find my phone to take photos of my 58 AIM pages? But, my 58 AIM page for the "Windshield" looks just like the bottom photo. The top photo is obviously a later production change of something probably minor in detail and the part numbers (casting numbers?) did not change. Again, the bottom photo shows a date of Aug 13, 1958 so this is roughly one week prior to the end of 58 production and about two and half weeks prior to 59 production. So, this is what everyone should be using for 59 production. Regarding the 557 and 558 Door Posts, my 58 AIM page is roughly the same situation regarding ending of 58 and start off 59 production for these door posts. I believe the 011 and 012 are a 58 one year only type item like many other items (doors, door spindles, rear bumper braces, front fender reinf)? I don't know this, but would think that the use of 011 and 012 into 1959 production would not have continued but for a couple weeks? Barry and Ken, do you believe your door posts (011/012) are original to your cars?

 

Thanks Mike, I am still learning. I had found a previous post of yours that mentioned they were all interchangeable, but did not see anything on the part vs. casting numbers. I still need to give you a call about adding visors before I put the header back on my windshield.

 

Bill,

I am sure my windshield glass is not original. The date code LOF Safety Plate AS1 JL is May 1961. The frame, who knows??? The VIN stamped on the frame matched my VIN tag, and the speedometer is dated December 1958, so those are the only items I could vouch for being original. Oh, and the bell housing is dated December 1958.

 

My information may be totally off base but no one has corrected me yet? I don't mind being wrong if we clearly get it right in the end. From what I have seen on this thread so far it would appear that the 61-62 cars used another casting number item? If the 61-62 AIM looks the same as the 59 casting numbers for the posts we might be getting there. I don't think anyone would dispute that you can interchange these things as long as you know what you are dealing with. Things are not definitive to me yet.

May only be important if you want your car to be judged correctly so do any of the judging manuals stipulate what the door posts should be? I don't recall what the 58-60 manual stated as I threw it away

 

What Mike was trying to tell you on 61/62 posts is that one difference is the serrated vs smooth front horizontal side...either will fit on a 61 or 62, My 61 had a mixed pair (which I corrected later):



I wouldn't think the casting numbers would be the same but I have not confirmed it.

 

They ARE the same, but one is smooth, and one is serrated. Remember, these are casting numbers, NOT part numbers.
3762557 (left) and 3762558 (rh)

 

Thanks everyone for the info. Mike summed it up best, as usual. All the windshield posts are interchangeable with the only difference being the presence of a hole for the sun visors. Visually, they will all be the same except for this hole (which is not visible unless there is a corresponding hole in the header).
The door post are also functionally interchangeable but have visual differences regarding the top of the post area for the gasket and the serrations.
My 59 came with posts 011 and 012 with a serrated surface, so NOT original to the car as I suspected. I bought the car in pieces which included many other non 59 parts, so it makes sense.

 

Sorry guys, I further complicated things (at least for myself) by mixing the door posts and windshield pillars. I corrected my post with “My 59 built on 01/06/59 has the 3754011LH & 3754012RH door posts...”. Whether they are original is anyone’s guess.