1969 SS production numbers

[mike1959]

Am I just too stupid to live, or...?  Production numbers for 1969 Super Sports don't add up; engine totals (36,309) for the L48, L34, L35, L78 and L89 surpass the Z27 count (34,932) by 1,377.  Have I simply missed the obvious; were L48s installed in non-SS cars that year?  Or is there another explanation?  Again, am I the bozo here?

[ZLP955]

IIRC, L89 figures were included in L78 because it was a cylinder head option RPO on mandatory L78. But that only accounts for about 311 cars versus your figures.......

[KurtS]

Nope, that's been noted before....

[buenymayor]

Could the over run engines be for warrantee replacements?

[firstgenaddict]

Follow along with this... 
The COPO's were L78's with the SS nomenclature and L78 engine & CID ornaments deleted, along with adding the BE axle, HD cooling, ZL2, & L72.
 
Because the COPO's were L78's with SS equipment removed could this account for the remaining cars?
Could the extras 1377 have been the COPO's which were ordered out and began as Z27 L78, even the first 50 Yenko's were X66 cars, so they got gills, black tail pans, vertical trim on tail lights, yet no SS emblems.

[Mark]

That would be a good reason and might be correct , BUT none of the COPO window stickers or shipper paperwork includes the code Z27 (the SS RPO) on them anywhere.  The totals in that options PDF sheet are the GM reported number of orders that contain the specified RPO number, so if the numbers are correct theoretically there are another 1066 RPO Z27 (after you remove the 311 L89s which were an add on RPO to the L78 option) cars out there somewhere (maybe cars shipped as CKDs to Europe, South America and the Philippines for assembly there)?

[69Z28-RS]

Chevrolet sold Many (I don't know the numbers) to dealers like Baldwin Motion, Yenko, etc for *upgrading* lower level NEW Camaros, etc..  Do the numbers of those 'extra engines' come into play here?  I'm not sure where all the numbers came from.... 

[firstgenaddict]

Correct Mark, however don't the 9561 spec sheets show the deletion of the Z27 badging and etc along with the addition of the corresponding conversion parts? ZL2 etc?
The High Performance Conversion 9561AA included XYZ removed ABC.

IMHO 9561 was really a 427 Super Sport without SS emblems and standard with ZL2, 4.10 and HD cooling. The fact that the emblems were not there did not mean that Chevrolet didn't consider it a SS.  Wasn't that the consideration when doing the program? to get a good base without spec'ing certain springs chassis components etc that if they started with a Z27 L78 and dropped parts it would be easier.

[KurtS]

1066 is really close to the COPO engine production totals.
Just saying...

[firstgenaddict]

That would be a good reason and might be correct , BUT none of the COPO window stickers or shipper paperwork includes the code Z27 (the SS RPO) on them anywhere.  The totals in that options PDF sheet are the GM reported number of orders that contain the specified RPO number

I will concede all of the points but add that after having studied a few hundred different 1969 Camaro window stickers I am now under the belief that the ECL codes were a billing and or inventory control mechanism.
ECL codes changed when content within the option packages changed.
The ECL for performance axle ratio changes after the  option begins to include HD cooling in April (price changes as well but price appears to be independent of ECL, meaning there are price increases without corresponding ECL changes yet there are option content changes without price changes in which the ECL does change.)
U17 is a great example as the only changes within the option deal with tachometers.
If anyone had a LATE LATE window sticker for a Z which had a 6500 red tach (very rare) and U17 we would know if the ECL changes from the early Z tach to the late Z tach. IT may not if the standard part within the option changed yet wasn't unique. IF the 6500 red tach was a running change in standard part the ECL may remain the same.