Fender extension markings
 

I need to have some small touch up work done on a 26k survivor L78 (endura bumper paint cracking). I decided to take stuff further apart just to clean everything up really well. The fender extensions each have a white "6" marked on the inside of them. Any idea what these were for? I'm just curious as I can't recall seeing them mentioned. Thanks!

Re: Fender extension markings
 

The fenders were pierced for badging by Chevrolet. Box 103 on the BBC has a code for it. There was some worker shorthand on the line; COPO extensions are often marked 427 M.

In your case a 6 could indicate 396 badging.

Re: Fender extension markings
 

William
I had one COPO resto with 427M on the fender extension, always wondered what the &quot;M&quot; was for [img]<<GRAEMLIN_URL>>/dunno.gif[/img] enlighten me... [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

Re: Fender extension markings
 

Best guess, Motor. Otherwise easily confused with the unit sequence number, also 3 digits.

Re: Fender extension markings
 

OK, makes sense. I guessed at one time it was for Muncie.

Mike

Re: Fender extension markings
 

It is my experience that the &quot;6&quot; is short hand for 396...BKH

Re: Fender extension markings
 

What about &quot;M&quot; for M40?

Re: Fender extension markings
 

427 M also seen on 4-speeds.

Re: Fender extension markings
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: William</div><div class="ubbcode-body">427 M also seen on 4-speeds. </div></div>

I figured that would be too easy

Any insight from Phil during his Echos of Norwood research?

Re: Fender extension markings
 

These are https://www.yenko.net/ubbthreads/pics...219_090310.jpg
https://www.yenko.net/ubbthreads/pics...219_090246.jpg
on my Z. Friend says these are swap meet parts!

Re: Fender extension markings
 

Fender extension on my 69 RS Z prior to paint.

Re: Fender extension markings
 

Ran across this photo of the other fender extension on the 69 RSZ

Re: Fender extension markings
 

The blue RS ZL1https://www.yenko.net/ubbthreads/pics...1_7_06_007.jpg
https://www.yenko.net/ubbthreads/pics...1_7_06_008.jpg

Re: Fender extension markings
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MosportGreen66</div><div class="ubbcode-body">What about &quot;M&quot; for M40?

</div></div>

Probably not, since it could also be interpreted as M20/M21 (whichever was used).

Also - the fender guy doesn't really need to know the transmission type, since there was not an emblem installed on the fender to denote such or any kind of packaging to accommodate. So no &quot;heads up&quot; markings would be required.

K

From what I understand these are instructions for piercing fenders for trim and emblems...
These are the codes I have seen personally...
427 M is COPO Style Trim
G R is Z28 Rally Sport
G M Z28 Style trim
427 R is COPO Rallysport

FWIW the engine RPO code on the body broadcast for the Z28 is G.

Here is another to add to the list.

6S

This was from a 68 Bronze bb vert.