Canadian 9010/9737 = M20 or M21

[YENKO DEUCE REGISTRY]

CopoPete;
What do you think the two Canadian COPO Novas came with for a trans, an M20 or an M21??

I know that the GM of Canada sheet for your car shows an M20, as does Don Yenko's order form for our cars. However, all cars found to date have an M21, therefore we believe that the trans type was changed within one of the COPO's. We are not sure which one.

What do you think??
M

[COPO PETE]

Marlin; Every prevoius owner I talked to on my COPO says the car came with M20. The original salesman who ordered them claims he ordered them with M20 because he wanted the better first gear. My car shows the 9010 BE. Was there ever different letters shown after the 9010 on any 4 speed Yenko's? There has to be something different on my GM microfilm that the Yenko's did not have.
Peter

[YENKO DEUCE REGISTRY]

Pete;
I know that there were different extensions to the COPO 9010, but I only know of yours and the one for 4speeds with power steering. I am in Richmond, VA for business and don't have my copy of Yenko's form with the 9010 extension.

Yenko's order form does request the M20, but it also requests the L65 engine. I believe that both were changed under COPO 9010/9737. Do you have the POP for your car?
M

[COPO PETE]

Yes I have the Protect-o-plate for my car. I believe I already sent you a copy of it but it shows POE13 for trans, which means Muncie,1970, May 13th if I'm not mistaken. Also show the number 133 to the far left(looking at it in the backwards form as you read it.).Not sure what that number stands for. I always thought Yenko ordered his all M21 while both Canadian cars were ordered M20.
Peter

[YENKO DEUCE REGISTRY]

Pete;
There should be a letter after that stamping on the POP, an A, B, or C. The Yenko cars have a B for the M21. Can you check??
M

[JoeC]

Using a book for 1969 the 1=J50 power brakes,3=U63 Radio,the next 3=J52 Disc Brakes

[COPO PETE]

On the left as look at it, which would show up after the vin, there is a space and then a "H". Directly under the H is a "6", which is on the same line as the rear end numbers, But it would show up about 3/4 of an inch after those numbers. Directly under the 6 is a chevy symbol that is inverted. Any idea what the 133 stands for?
Peter

[COPO PETE]

I'm Back: In my microfilm copy from GM, after the 9010BE, the code 931AAO is next and then the 9737AA. What does the middle code stand for? Is that another COPO code? Also, was there different versions of 9737AA.? Could you get 9737BA? Also what is the code for automatics. ? Someone must have the buildsheet for a automatic car.
Peter

[Kurt S]

Marlin,
I don't know if I've ever seen a POP with a trans code on it. I have a bunch for 69 POPs. I have seen some auto trans codes with the D or N shift code on them.
Pete,
I've seen codes like 931AA0 on 69 Camaro microfiche sheets. Do other cars on the sheet have a similar code?

[COPO PETE]

Kurt, glad to see you aboard. 90% of the cars listed have a 935AAO but some have 964AA0, 938AA0, 940AAO, 941AAO, 942AAO. Only mine has the 931AAO. On the sheet also the trans is listed as M20AFO and I see other cars listed with M21AAO. What is the letter designation?
I still always thought the cars tranny was ordered separatly. The code for Chevelle 9566BA was for 427 automatic. 9566AA was the code for 427 four speed, but the code remained the same for M22, M21 of M20. Am I wrong here? If not, why would 1970 be any different, you just ordered the tranny you wanted.
Peter

[YENKO DEUCE REGISTRY]

Kurt/Pete;
I stand corrected, the A,B, or C, is not on the POP as I had thought.

My underlying quest with this post is to determine if GM changed COPO 9737 for the Canadian cars vs. the Yenko cars by putting the M21 into the Yenkos only?

On the Canadian documentation it lists COPO 9737AA, on Yenko's order form is lists COPO 9737CA - but Yenko was ordering 4speeds w/ power steering on this particular form, and I don't have his order form for 4speeds without p/s like the Canadian cars. I think the difference in the suffix letters pertains to the power steering?? or the M21 vs. the M20??? Any thoughts?

JoeC: You are correct with the deciphering of the '133' on the POP.
M

[COPO PETE]

Talked to the origianl salesman of my car this morning. He says he still has the lists of what all the COPO packages included. He'll get back to me next week and fax the info to me. Stay tuned.
Peter

[Kurt S]

Pete,
That would be great documentation. If it includes 69's, I'd be interested in a copy. http://www.yenko.net/ubb/smilies/images/icons/smile.gif
The ECL code on the trans is dependent on many variables. No easy to decode and we've tried using hundreds of datapoints. http://www.yenko.net/ubb/smilies/images/icons/frown.gif
Take a look at that 931AA0 code and the others on the sheet. Does the codes follow any of the paint colors or engine options? Just a thought.
Yup, it would look like the 9737 package is different on this car with the different ECL. Hard to tell what drove the difference though. Could be any change to the package.

[Mr70]

Don't know if this helps,but on my 1970 L-78 Chevelle made Oct.69.The original trans tag on it says C 70 W.It is a turbo 400.the Vin# is stamped on the drivers side below the pan.CW is also painted on pass. side of trans case and CW is on the buildsheet.

[Chevy454]

While you are talking about trans codes on the '70 COPOs, here is a question for you:

On an automatic car, what is the code stamped on the trans? Was it 70Wxxx or 70CWxxx I have read both, and Marlin says just the "W", but I'm just curious if anyone has actually seen an original 400th and what was stamped on it. Not doubting you, Marlin, just curious!

[Edited by Chevy454 (05-26-2001 at 12:24 PM).]

[elcamino]

M20 base default 4-speed trans.


[Edited by elcamino (06-01-2001 at 07:32 PM).]

[YENKO DEUCE REGISTRY]

Pete;
Any news from your connection regarding your trans info??
M

[YENKO DEUCE REGISTRY]

What???

[COPO PETE]

Marlin. Still waiting. It's suppose to be coming. Be patient, and I'll report ASAP.
Peter