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Old Mar 9, 2008 | 01:28 AM
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Default Frame Stencil Information

am restoring a 74 ls4 (454) convertible and am trying to find information on the original part number of a 74 frame and an approximation of how many days a frame was assembled before the actual assembly date of the car...

in my case, the car was built Nov. 5, 1973...

according to the ncrs technical information and judging guide...there is supposed to be a part number and a frame assembly date stenciled in white upside down on the passengers side of the frame rail just behind the front wheel....

anybody have any information

it would be appreciated

thanks

robricci@aol.com
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Old Mar 9, 2008 | 05:42 AM
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You would probably get more info on the NCRS forum. They are more geared toward factory correct restorations.

BigBlockk

Later.....
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Old Mar 9, 2008 | 08:15 AM
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Not sure about 74, but the info i have for up to 72 says approx two weeks
prior to assembly. #339719 for auto or 339720 for 4 speed

Jim
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Old Mar 9, 2008 | 12:29 PM
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Originally Posted by 70BBvert
#339719 for auto or 339720 for 4 speed

Jim
Those are the numbers listed for 74 in DocRebuilds catalog, for what it's worth.
Just to add to the confusion, this is my 78 Pace Car. The Vette was assembled 3-18-78, two months after the frame date.

Last edited by KapsSA; Apr 20, 2008 at 05:45 PM.
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Old Mar 9, 2008 | 12:43 PM
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Rob,
Quanta, in Maryland reproduces the stencils and I think can help you with the proper #s and date.
Regards,
Alan
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Old Mar 9, 2008 | 02:05 PM
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Default frame stencil

ive been to quanta and they only go to '72...

i went to dr. rebuild and there is limited information on '74 corvettes...im assuming KapsSA has the catalog in hand and looked...

question KapsSa...after the part number ...is the "271" the sequential build order for your car? Do you have any build sheet or tank sticker that shows a 271?

i find it hard to believe that there arent enough 73, 74, 75 restorations going on out there to warrant this information....somebody has to know...

also...i went to ncrs archives and i guess you now have to become a member just to view the archives..or ask a question....

not that its a big deal...but jeez...
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Old Mar 9, 2008 | 09:30 PM
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Originally Posted by ROBRICCI
i went to dr. rebuild and there is limited information on '74 corvettes...im assuming KapsSA has the catalog in hand and looked...

question KapsSa...after the part number ...is the "271" the sequential build order for your car? Do you have any build sheet or tank sticker that shows a 271?
Yep, read that number for 74 out of the catalog. As for accuracy, the original frame stencil on my Pace Car IS the same as what DocRebuild lists in the catalog for 78auto.

I don't know what the 271 is. The NCRS judging manual simply states that the frame part number is followed by a dash number, examples such as 261,270, 272, and 280(for 78). They don't even show my 271. I don't think NCRS knows what it means, either. My secquence no. is 900009. I see no 271 on any of my documentation.

Doc's part numbers for the frame stencils are:
8704158 for the 74 manual 339720 stencil
8704160 for the 74 auto 339719 stencil
Either is $14.
Ya gotta call and talk to em tho to discuss the dates if you're not sure.
Also, the catalog states the frame date can pre date assembly by 2-8 weeks.

Last edited by KapsSA; Mar 9, 2008 at 09:37 PM.
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Old Mar 10, 2008 | 06:29 AM
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i went to dr. rebuild and there is limited information on '74 corvettes...im assuming KapsSA has the catalog in hand and looked...

question KapsSa...after the part number ...is the "271" the sequential build order for your car? Do you have any build sheet or tank sticker that shows a 271?
A few years back I did an exhaustive research of all the NCRS frame stencil threads and no one really knew. The best guess was that the suffix probably was the version of the frame engineering drawing used to manufacture the frame...so a 271 meant the 271st version of the drawing for that particular part number.

Also...frames were stenciled at the A.O. Smith manufacter in Granite City Illinois where frames were made so it has nothing to do with the VIN. Frames were stamped elsewhere with the VIN at the St Louis plant. And that's a great photo Kaps posted...yellow paint was used in later years.

i find it hard to believe that there arent enough 73, 74, 75 restorations going on out there to warrant this information....somebody has to know...
I believe I just came across a 74 frame stencil while going through some photo archives...I'll have to backtrack and maybe I can find it.

also...i went to ncrs archives and i guess you now have to become a member just to view the archives..or ask a question....
Yep...just changed.

Last edited by hunt4cleanair; Mar 10, 2008 at 06:29 AM. Reason: quote html
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Old Mar 10, 2008 | 10:06 AM
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thanks guys...ill let you know what happens...
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Old Mar 10, 2008 | 10:35 AM
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In the AIM I think it lists the frame number which is the same as the one they put on the frame. In 74 the dash number may be like 100 or 200 but that is a guess from memory.
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Old Mar 10, 2008 | 01:20 PM
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FOR ANYONE THAT CARES....

i did find everything needed for the 74 frame at Dr. Rebuild...

they have everthing on their internet catalog for a '74 including the frame stencil with the correct fonts, the gas tank stencil and the driveshaft stencil kit....

the ncrs site will let you get into their archives for 30 days..then you must become a member....

alas...ncrs did not help me any where near as much as you guys did....i appreciate the help!

robricci
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Old Mar 11, 2008 | 04:51 AM
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Originally Posted by ROBRICCI
alas...ncrs did not help me any where near as much as you guys did....i appreciate the help!
We are the NCRS!
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Old Mar 14, 2008 | 08:52 AM
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i meant the ncrs website....

i love you guys...you know that....!
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