Which wing nut is used on C1's

[Dino L.]

In this photo... are any of these wing nuts original to a 1957 Dual quad 270hp car or a 1962 340Hp car? Lets label them 1-2-3 left to right? If you have known originals on your 57 or 62 let me know....of course there is an obvious non period wing nut in the photo. Go red wings!


1 2 3

[Rich P.]

Re: Which wing nut is used on C1's

1 is the style you need to show a profile picture to see if it's original.

[David S.]

Re: Which wing nut is used on C1's

Dino I have attached a few pictures of the wingnut from my 57 Bowtie car.
This is the correct style.
Dave

[Geoff C.]

Re: Which wing nut is used on C1's

How many different designs of air cleaner wing nuts did solid axle Corvette use? I certainly don’t know. However the chance the many were replaced over time is certain. Just like gas caps & radiator caps. So that does make true assembly difficult to discern with great certainty.

Disregarding 6 cylinder models; do 55-62 Corvette V8 models use one design only? Or several? You can’t always go by examining part numbers, and the belief that a different design has a different pqrt number is not always fact. In addition, I know of the same part that was assigned two different part numbers.


I wonder if other GM car line models used the same ones. Or did GM tool up to produce unique air cleaner wing nut for Corvette only?

Hmmmmmm.

	(calendar year sales)
	Chevrolet	Buick	Pontiac	Oldsmobile	Cadillac
53	1,346,475	488,755	418,619	334,462	109,651
54	1,143,561	444,609	287,744	354,001	96,680
55	1,704,667	738,814	554,090	583,179	140,777
56	1,567,117	572,024	405,730	485,458	154,577
57	1,676,449	405,086	334,041	384,390	146,841
58	1,142,460	241,892	217,303	294,374	121,778
59	1,462,140	285,089	383,320	382,865	142,272
60	1,653,168	253,807	396,716	347,142	142,184
61	1,318,014	276,754	340,635	317,548	138,379
62	2,061,677	521,933	521,933	428,853	160,840
	Chevrolet	Buick	Pontiac	Oldsmobile	Cadillac
	15,075,728	4,228,763	3,860,131	3,912,272	1,353,979
	GM	28,430,873

I'll bet the club manuals have an answer - if you are chasing points.

[John D.]

Re: Which wing nut is used on C1's

Love It Doc.

[Dino L.]

Re: Which wing nut is used on C1's

Dear David Smith, thanks so much for answering my question. The so called club manual shows your wing nut which looks identical dimensionally and tool mark wise to one of the 2 that were on my dual quad 57, as I show pictured as number 2, now my old club manual for a 62 does not picture the carbuerated wing nut but I think it is the same as my pictured number one. If someone has a photo of a wing nut on a bow tie 62 car and want to share what they think to correct would be appreciated. Just looking to learn.... not buying selling or chasing points.

[David B.]

Re: Which wing nut is used on C1's

Give me a part # and your email and I should be able to forward Engineering dimensions. Wing nut is a vendor item. Can not believe what I am seeing on ebay for this item. Insanity at it's highest level!!

[Richard M.]

Re: Which wing nut is used on C1's

Give me a part # and your email and I should be able to forward Engineering dimensions. Wing nut is a vendor item. Can not believe what I am seeing on ebay for this item. Insanity at it's highest level!!

Just imagine if all of us were on a Ferrari Technical Discussion Board instead of this one.

[Dennis C.]

Re: Which wing nut is used on C1's

Dear David Smith, thanks so much for answering my question. The so called club manual shows your wing nut which looks identical dimensionally and tool mark wise to one of the 2 that were on my dual quad 57, as I show pictured as number 2, now my old club manual for a 62 does not picture the carbuerated wing nut but I think it is the same as my pictured number one. If someone has a photo of a wing nut on a bow tie 62 car and want to share what they think to correct would be appreciated. Just looking to learn.... not buying selling or chasing points.

While I can't speak about a 57 wing nut, that style would not be correct for a 62. For 62, your photo number one might be correct, but as others have said, the photo is not adequate to be sure.

The updated 61-62 manual has a nice photo for 62 style and, if I remember correctly, a photo of a coin test to check dimensions of wing separation.

Dennis

[David B.]

Re: Which wing nut is used on C1's

In this photo... are any of these wing nuts original to a 1957 Dual quad 270hp car or a 1962 340Hp car? Lets label them 1-2-3 left to right? If you have known originals on your 57 or 62 let me know....of course there is an obvious non period wing nut in the photo. Go red wings!


1 2 3

Dino, Part # 3736162 is the correct wing nut for 57 dual quad. I do have the engineering print which shows the drawing date was 3-13-56. This was just about the time many other parts were being redesigned as a result of testing at Sebring. This would also indicate early '56 dual quad Corvettes would not use this particular item. In answer to another thread it appears that there could be 3 different wing nuts used in 56 and at least 3 different types used in 57 (1 x4 & regular FI were the same). I would guess that 3736162 was continued to be used in other years (probably thru at least 62). Since I do not have all AIM,s I can not determine what years. Have your email and will forward actual dimensions.

[Dan P.]

Re: Which wing nut is used on C1's

David what carburation is your BowTie car. Thanks

[Bruce B.]

Re: Which wing nut is used on C1's

Assuming that some of the of the 28,430,873 wing nuts used by GM over the 9 year period were used on Corvettes I would say it is impossible to categorically say that "THIS" wingnut is correct for any year.
If these were stamped in a one cavity stamping die (tool) with a life of 200,00 pieces approximately 142 dies would have been used.
The wear on the die could be significant due to the thickness of the raw stock, the consistency of the materials and the configuration of the wingnut.
So in practice die marks, drawing defects and other surface conditions would be constantly changing on a individual die.
Also remember these dies were hand made by skilled Tool and Die Makers, not on CNC, EDM or other automated machines.
Multiply that times 142 dies and you get at least 142 different wing nuts times 200,000 without considering tooling wear.
You make the decision.

[David S.]

Re: Which wing nut is used on C1's

Hi Dan,
My bowtie is a base engine car.
At are most resent National in RI in 2016 we had a very very nice bowtie candidate for judging.
It scored very well and it also had the same wingnut and was a 2x4 car.
This car will receive the bowtie its next time out at a National Convention.
Dave

[David B.]

Re: Which wing nut is used on C1's

Love your math, but I think you might be a little off track on your thinking. GM Engineering Standards have dimensions and criteria for every single nut, bolt and yes, wing nut etc. used on a GM product. If wing nut 117204 is specified than that is what is ordered and used. If the part in question does not adhere to engineering standards (dimensions etc.) you will not be supplying parts in the future to GM

[Bruce B.]

Re: Which wing nut is used on C1's

David,
I realize that GM and every other in industry has Standards, Specifications and Drawings for all purchased and in house produced parts.
But on a mass produced part, to assume a stretch mark, tool mark or other characteristic is going to appear on thousands of parts produced over a multi year time period is pure speculation.
That is a NCRS description not a GM specification.
Bruce B