Seeking some additional knowledge

Don_Lightfoot · #1 11-11-2002, 06:59 PM

This is again for my 69 Velle Resource page on my website.

According to information on this site there were 99 Yenkos sold, is that accurate or a guesstimate?

What would be the estimated range of COPO's produced including the Yenkos?

Were COPO's only produced at specific plants?

Again, I appreciate any feedback.

copo9566aa · #2 11-11-2002, 09:16 PM

Don
323 estimated L72 Chevelle (L78/L72) (COPO) (9562 & 9566)
99* estimated converted to Yenko (L78/L72/Yenko)
224 estimated not converted to yenko (L78/L72)
9562 production ??? [img]/ubbthreads/images/icons/confused.gif[/img]
9566 production ??? [img]/ubbthreads/images/icons/confused.gif[/img]
*(99 strange number) [img]/ubbthreads/images/icons/grin.gif[/img]
Question in a question
Chevelle COPO started life with RPO L78 (replaced with RPO L72)
The 323* COPO Chevelle is counted or uncounted on the total
production of L78 Chevelle(*9000).

Belair62 · #3 11-11-2002, 09:19 PM

We do know there was at least 1 COPO Chevelle built at the Freemont California plant [img]/ubbthreads/images/icons/grin.gif[/img]

Keith Tedford · #4 11-11-2002, 10:54 PM

I have a photo copy of a 1987 letter in which Fran Preve states that there were 93 MP 3964268 automatic and 265 MQ 3964269 4 speed engine assemblies built in 1969. The CE engines that I have seen just have CExxxxxxx stamped on them. This would lead me to believe that there were probably 358 COPO Chevelles built and an additional number of CE replacement engine assemblies added to the total number of engines built. The 323 number that is commonly used is based on 358 total built with 10% going to warehousing for warranty and over the counter sales. In this case it would mean that the warehouse engines would be stamped MP or MQ as well. Our warranty replacement motor in our '69 L78 Chevelle doesn't have the JD code stamped on it. I would think that this would hold true for COPO cars as well. Could be all wrong though as this is only an assumption.

**Stefano** · #5 11-12-2002, 12:25 AM

Oh, so there is one of those California*COPOs.

Belair62 · #6 11-12-2002, 12:36 AM

Stefano....I * think* you * may* have * developed* some * kind * of* tick * !!! There is treatment for that ! [img]/ubbthreads/images/icons/tongue.gif[/img]

**Stefano** · #7 11-12-2002, 12:41 AM

I have said it once and will say it again ,you are an * [img]/ubbthreads/images/icons/ooo.gif[/img]

copo9566aa · #8 11-12-2002, 01:13 AM

Oh no another Douglass thread *** [img]/ubbthreads/images/icons/grin.gif[/img]

Don_Lightfoot · #9 11-12-2002, 04:52 AM

Quality information guys, thanks very much.

It appears the general consensus is a total of 323 of which 99 were Yenkos, as Roger has disclosed. Interesting question regarding "were they included in the L78 production numbers?" Keith, your input is always informative.

Belair62 mentions at least one at the Freemont plant, what other plants built them?

I'll leave it to you guys to figure out that *tick* scenario [img]/ubbthreads/images/icons/confused.gif[/img]

JoeC · #10 11-12-2002, 02:27 PM

I don't agree with that 323 number for COPO Chevelles. I believe it to be more like 200. The 323 was based on engine production which can be off by a large amount. I believe the engines were ordered in advance on estimations then whatever was not used was sold as service or parts counter engines. The ZL1 Corvette engine build was over 80 only 2 cars sold. I have other reasons - will post later.