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16  Camaro Research Group Discussion / Originality / Re: Correct Dip stick on: December 20, 2014, 08:03:32 PM
Mike,
After engine assembly and painting, on engine dress line.
Could you check the dipstick length from the top of the bell to the add mark for me? Should be 18 1/8" or 18 1/2" = or - depending which dipstick you have.
Good info on pans, think #3 (3929257) is correct for 1st gen Camaro. Grin
Bob
17  Camaro Research Group Discussion / Originality / Re: Correct Dip stick on: December 20, 2014, 07:06:25 PM
Mike,
The measurements in the P&A are taken from the seal surface facing the stick end. The problem is that the stick shown is generic in that it has a washer and a seal and no bell.
Stop the press. Just found something interesting in my 67 Corvette AIM that may explain the purple button.
Bob


'67 Corvette big-blocks had dipsticks with pink (salmon) buttons, both before and after the mid-season running change.
John,
Thanks for the information about the Corvette mid-season (3-3-67) dipstick change from 3860316 to 3925520, both with pink (salmon) buttons.
Now, if you look at the 67 AIM L35 A4 everything starts to fall in place.
The first production BB's started in January ? 67 and had 3902339 dipsticks with purple buttons.
The revision record shows a change in 2-8-67 from the old dipstick 3902339 with purple button to 3860316 with pink (salmon) button and then another change in 3-3-67 from 3860316 to 3925520 with pink (salmon) button. This coincides with the Corvette mid-season (3-3-67) change stated above.
The index of part numbers at the top of AIM L35 A4 never reflected the change in the color code identification as it should be pink or salmon and not purple.
This does lead to the question as to why was the dipstick changed so many times when the tube 3899640 and pan 3958658 where never changed until 68.
In 68 dipstick changed to 3925599 with yellow button, tube 3928901 and pan did not change. Same for 69.
Which engine went into production first the L78 or L 35? This is important as early engines should have dipsticks 3902339 with purple buttons  Huh .
Bob


Pan # 3958658 is wrong and should be 3929257.
18  Camaro Research Group Discussion / Originality / Re: Correct Dip stick on: December 20, 2014, 03:17:14 PM
January L35 and March L78, so early L35's would have the purple buttons and L78's should have the Pink (salmon). I have know idea when the L35 transition  to the pink (salmon) buttons took place or if early L78'S could have the purple buttons. Revision dates do not reflect  when actual production started but early L35's should have purple buttons.
Bob
19  Camaro Research Group Discussion / Originality / Re: Correct Dip stick on: December 20, 2014, 02:21:46 PM
Mike,
The measurements in the P&A are taken from the seal surface facing the stick end. The problem is that the stick shown is generic in that it has a washer and a seal and no bell.
Stop the press. Just found something interesting in my 67 Corvette AIM that may explain the purple button.
Bob


'67 Corvette big-blocks had dipsticks with pink (salmon) buttons, both before and after the mid-season running change.
John,
Thanks for the information about the Corvette mid-season (3-3-67) dipstick change from 3860316 to 3925520, both with pink (salmon) buttons.
Now, if you look at the 67 AIM L35 A4 everything starts to fall in place.
The first production BB's started in January ? 67 and had 3902339 dipsticks with purple buttons.
The revision record shows a change in 2-8-67 from the old dipstick 3902339 with purple button to 3860316 with pink (salmon) button and then another change in 3-3-67 from 3860316 to 3925520 with pink (salmon) button. This coincides with the Corvette mid-season (3-3-67) change stated above.
The index of part numbers at the top of AIM L35 A4 never reflected the change in the color code identification as it should be pink or salmon and not purple.
This does lead to the question as to why was the dipstick changed so many times when the tube 3899640 and pan 3958658 where never changed until 68.
In 68 dipstick changed to 3925599 with yellow button, tube 3928901 and pan did not change. Same for 69.
Which engine went into production first the L78 or L 35? This is important as early engines should have dipsticks 3902339 with purple buttons  Huh .
Bob

20  Camaro Research Group Discussion / Originality / Re: Correct Dip stick on: December 18, 2014, 11:39:53 PM
Mike,
The measurements in the P&A are taken from the seal surface facing the stick end. The problem is that the stick shown is generic in that it has a washer and a seal and no bell.
Stop the press. Just found something interesting in my 67 Corvette AIM that may explain the purple button.
Bob
21  Camaro Research Group Discussion / Originality / Re: Correct Dip stick on: December 18, 2014, 03:04:45 PM
Mike,
As a side note, the button on your gage is round which in itself is very interesting. Does your other L35 have the same gage?
Do the measurements I show for 3925520 come close to the ones on your gage?
L78 steve,
Yellow button was used on 68 69 gages.
Bob
22  Camaro Research Group Discussion / Originality / Re: Correct Dip stick on: December 18, 2014, 02:42:16 PM
Looking at page L35 A4 in 67 AIM it is very confusing. Note that there was a revision in 2-8-67 of the Gage ASM from 3902339 to 3925520 and in 3-3-67 the Gage (stick) from 3860316 to Huh? . No part # shown but  it had a purple identification code ( view A ). This is very confusing until you look at the P&A
69 P&A shows 3902399 as a stick # used in 67 ,  17 15/32 between full and seal, 17 39/32 (miss print 29/32) between add and seal, not sure about this stick (gage) numbers do not add up. The 69 P&A  also shows 3925520 as stick (gage)  used in 67, 17 13/32 between full and seal, 18 1/2 between add and seal.
Going to the 67 AIM I realized that item 4 was not an asm . but the actual Gage (stick) that was used. Revision 1   2-8-67 changed 3902339 ( do not know the identification code color)to 3925520 with purple color code. The tube 3899640 remained the same until 68 when the gage and tube where changed because of RPO C60. Have know idea what revision 2  3-3-67 is referring to
Mike I believe your gage to be correct and the button has faded from purple to pink over time. Blue and red = purple and fades to light red.
Bob
23  Camaro Research Group Discussion / Restoration / Re: door top on 67 w/ std interior on: December 17, 2014, 02:33:48 PM
Could I assume that the application of black on black would be the same as shown in previous replies ?
Bob
24  Camaro Research Group Discussion / Restoration / Re: Air Conditioning Center Dash Vent on: December 11, 2014, 06:35:03 PM
Anybody.
Bob
25  Camaro Research Group Discussion / General Discussion / Re: L48 QUADRAJET on: November 22, 2014, 04:06:06 PM
http://www.carbkitsource.com/carbs/images/numbers/Rochester/7026203.jpg
26  Camaro Research Group Discussion / Originality / Re: 67 L35 black lid wing nut shape on: November 19, 2014, 11:41:21 AM
NCRS Discussion Boards > Technical Discussion > 1963 air cleaner wing nut, #117204, #219281, or both?

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PDA

View Full Version : 1963 air cleaner wing nut, #117204, #219281, or both?

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David L.

December 26th, 2011, 02:34 PM

The 1963 Corvette AIM lists GM # 117204 as the part number for the air cleaner wing nut. GM # 117204 is a chrome plated "forged" type wing nut based on my research. The 219281 wing nut is a chrome plated stamped steel wing nut and first listed in the 1964 Corvette AIM. There is no part number change from the 117204 to the 219281 wing nut in the revision box in either the 1963 or the 1964 Corvette AIM.

 The 1963 Chevrolet Passenger car used two different wing nuts (not chrome plated) on the assembly line according to the AIM. GM # 148312 was replaced with GM # 9418699 on Feb. 12, 1963, but the actual assembly line change could have been a month or two later.

 The 9418699 wing nut is the same as a 219281 wing nut EXCEPT that it is not chrome plated.

 For those who have very original 1963 Corvettes:
 Did "early" 1963 Corvettes use the chrome plated "forged" type wing nut (GM # 117204) and "late" 1963 Corvettes use the chrome plated stamped steel wing nut (GM # 219281).

 Dave

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Timothy B.

December 27th, 2011, 07:01 AM

Back to the top as I have the same question..Smiley

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Jack P.

December 27th, 2011, 09:43 PM

This post caught my interest. I think my nut is an original 66 wing nut.

 Many of the posts give wall thickness size and tooling marks. It seems that some nuts that were used in 60-62 passenger cars, unchromed, were plated and used on corvettes , GM just changed numbers and vendors etc, etc, etc,

 The NCRS site seems down, so I thought I would let you all look at my nut.

 I have owned the car for 42 years now, an I am the second owner. I don't believe the nut has ever been away from the top and I know the top has not been away from me.

 What do you think of it, compared to the repros or do I have a 43 year old service nut, or original ?

 Jack

 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal001.jpg
 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal002.jpg
 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal007.jpg
 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal005.jpg
 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal012.jpg
 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal013.jpg
 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal014.jpg
 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal018.jpg
 http://i633.photobucket.com/albums/uu57/jackfit87/Wing%20nut%20air%20cleaner/Wingnutoriginal022.jpg

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Timothy B.

December 28th, 2011, 11:04 AM

Jack,


 That looks like the real deal 219281 wingnut to me, it's the 1963 wignut that I question.

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David L.

December 28th, 2011, 06:33 PM

Jack,

 I would say that the wing nut in your photos is an original (GM # 219281) but the issue in this thread is whether or not the the chrome plated stamped steel 219281 wing nut was original equipment on the 1963 Corvette as the 1963 assembly manual lists GM # 117204 which is a chrome plated "forged" wing nut. The 1962 Corvettes AIM lists the 117204 wing nut as well.

 Dave

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 Bingo.
27  Camaro Research Group Discussion / Originality / Re: 67 L35 black lid wing nut shape on: November 17, 2014, 10:46:34 PM
Anyone know why the chrome wing nut 219281 would have a 6 digit part number assigned instead of the conventional 7 digit number 9418699?
Just curious. Grin
Bob
28  Camaro Research Group Discussion / Originality / Re: 67 L35 black lid wing nut shape on: November 17, 2014, 12:52:18 PM
Mike,
Could we have an over head shot of the NOR wing nut?
Here is some ideas.
67 AIM L35 A8 and L30 A4 show that production wing nuts where used. Now, 6 C1 (6 cyl.) and 6 C2 (8 cyl.) show that 9418699 was used on both engines. It would be safe to assume that 9418699 was the production wing nut used on all engines except the 302 and the 396 375HP that used a chrome wing nut 219281. I believe that 219281 is the same wing nut as 9418699 and respecified with flash chrome.
68,69 AIM show the same thing ,just on different pages.
Do not think that small differences in appearance due to vendor manufacturing processes was of importance as long as vendors meet specifications set forth by the DRE engineer.
Bob

Anyone with a known untouched 67 survivor have a picture you could post would be appreciated.
Thanks.
29  Camaro Research Group Discussion / Originality / Re: 67 T400 Transmission Mount on: November 15, 2014, 04:44:42 PM
Victor,
If you look at the AIM 6 B9 revision record you will see a mount revision, just wanted to make sure no one mistook that revision for the BB change.
I believe the first SB with a T400 was the big pass. with a 327 275 HP around Jan, 67.
3872247 was the first mount introduced on the auto. 325HP 396 but sometime before the end of 67 production it was changed. Why and when I am trying to find out.
You are correct about the BB support assy. 3912573 and CRG has a good report that addresses that issue.
Bob  
30  Camaro Research Group Discussion / General Discussion / Re: 68 Camaro TH400 mount on: November 15, 2014, 03:14:56 PM
Mike,
Made new topic in Originality. Have no idea why the change but not for bolt centers as the tail housings 8624496 are the same.
Bob
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