1970 Camaro "Competion Plus" Shifters - Possible date coding

M21RSZ28

Veteran Member
Mar 9, 2006
548
The Question below about Possible date coding for 1970 Camaro "Competion Plus" Shifters was asked in another thread by Dave Liukkonen - DCL70 and I think a new thread should be started for this question

"Is there anyone else (other than me) that believes there are date codes on these factory Hurst Competition Plus shifters? I have done a lot of research and I am convinced each FACTORY Hurst shifter has a date code (the first 3 digits of the 8-digit stamping). Pete Serio did not address this in his book.
Examples: "0600622R" where the "060" = June 1970
"0310812C" where the "031" = March 1971
The 4th digit is always the number "0". I have no idea what the last 4 digits mean."
__________________
Dave Liukkonen
Originally from "Narragansett No. 6" in the historic Bay State

1970 Camaro SS350
1966 Corvette
1994 Camaro Z28

In Answer to Dave's question, I have always wondered if the ID code was a date code as many other GM parts are dated

Pete Serio's book "VINTAGE HURST SHIFTERS" states on page 52 that the "row of numbers with one letter bewteen the numbers and/or a letter at the end is an example of Hurts's internal factory code used on an OEM shifter housing"

Spoke with Pete on the phone over a year ago about this serial number being a possible date code but he still did not think it is a date code - Pete has seen a lot of OEM shifters but they are not always with their dated vehicles

Perhaps with a survey we can come to a conclusion about date codes vs serial numbers or maybe a date code with a short serial number

So I checked two of my cars that have their original factory installed "Competition Plus" shifters plus my extra 70-71 shifters

Shifter ID codes:

1) 3-05-70 Van Nuys builts - shifter ID code "0200313J" 9 (ORIGINAL TO CAR)

2) 6-11-70 Van Nuys built - shifter ID code "0500431Q" (ORIGINAL TO CAR)

3) 70 shifters with "7433" handles shifter ID codes "0200314I - "0300372M"

4) 1971 Shifters with correct "7945" stamped handle with shifter ID code "0900711C" and "0400422M"

I cannot verify 1971 shifter and handle with ID code "0400422M" as being a complete assembly from prdoction, this is the only one that does not fit the date code for a 1971 shifter

Shifters from my March and June Camaros do line up with the date code question - After more info is gathered perhaps we can base this idea on facts

The shifter ID code can be seen while the trans is in the vehicle, however the bolt must be pulled out of the way to read the 1st digit clearly - Just jack up the car and release the bolt and pull back a bit to snap a pic - don't be lazy use Jack stands to be safe!

M21RSZ28

000_1897.jpg
 
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DCL70

Veteran Member
May 5, 2007
2,164
The South of N.H.
M21RSZ28

I believe the "0200313J" ("020" = Feb. 1970) shifter in the Mar 05, 1970 car and the "0500431Q" ("050" = May 1970) in the June 11, 1970 car fit perfectly with my date code theory.

Your 1971 shifter stamped "0900711C" ("090") also fits my theory.

The "0400422M" ("040" = April 1970) shifter with a 7945 lever does not make sense to me. Could this shifter have been modified by others in the last 39 years?

These 8-digit stampings may be referred to as a "Hurst internal code". Doesn't it seem logical that this "Hurst internal code" is actually a date code for quality control purposes. Isn't the purpose of a date code for quality control? Some may think that I am "missing the boat" but simple logic tells me that I am not.
 
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Budz

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Lifetime Gold Member
Mar 17, 2002
3,410
Ashburn, Va USA
After looking at mine, at first I thought the 4th thru 7th number's might be the "day" of the month, but that doesn't work with M21RSZ28's numbered shifter's.

My car is an 04D Norwood car with it's original transmission.

My frame date.....42270S1 (April 22, 1970)

My Hurst Competition Plus shifter # 0400422M.
First three digit's 040=April, 1970
Next four digits 0422=April 22??????? Like I said, M21's number's dont work like this.
M=????shift, plant, etc......

Have never had the handle out so I don't know what the number is.
 

DCL70

Veteran Member
May 5, 2007
2,164
The South of N.H.
Buddy,
Another shifter that fits my theory. It's looking better every day.
"0400422M" (where "040" = April 1970) Hurst shifter in a frame dated April 22, 1970 and "04D" body date.
The 4th digit in the 8-digit code is ALWAYS a "0". I do not know what the last 4 digits ("422M") signify (refer to the picture of some other 70 -71 factory Hurst shifter codes).

Are the threads on your shifter lever 3/4" long ("7433" lever) or are they 1 1/8" long ("7945" lever)? My guess is 3/4".
 
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DANZ

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Lifetime Gold Member
Feb 28, 2004
807
Purcellville,Va.
Got a couple here, I don't know what they are out of but these are the numbers: 07007310
0900712M
May not help but you can add the numbers to your list.
I haven't looked at whats on my car, maybe tomorrow.........
 

DCL70

Veteran Member
May 5, 2007
2,164
The South of N.H.
Dan,
The Firebirds and GTO's also used the same shifter mechanism. I assume you do not have chrome levers. Check your "0700731O" shifter closely. The last digit should be the letter "O", not the number zero.
 

DANZ

Veteran Member
Lifetime Gold Member
Feb 28, 2004
807
Purcellville,Va.
Dave, it could be a "Q" instead of an "O".
BTW, I asked on the other thread but rec'd no reply, did console/non-console '70 Z28 use the same handle?
Here are the pics:

100_3078.jpg

100_3084.jpg
 
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70 SS/L78

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Lifetime Gold Member
May 5, 2005
2,971
Rockford, MN
Here's another one to add to the results.
The # on my shifter is 0200311R and my car is a 03C, Norwood. I've never had it apart so I don't know the #'s on the handle. I'm 99% certain it is original to my car.

This would seem to help Dave's therory on date codes..... I can get a picture if you're interested.
 
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DCL70

Veteran Member
May 5, 2007
2,164
The South of N.H.
Dan,
I assume the "0900712M" (Sept. 1970) mechanism came with the "794?" (it's actually "7945") lever and came from an "early" 1971 Camaro (or 1971 Firebird wo/console).

I believe the "early" 1970 Z28 and 1970 Camaro SS models used the "7433" lever with a 3/4" thread length and that the late 1970 models as well as the 1971 models used the "7945" lever (1 1/8" thread length). The 1970-1971 Firebirds without the console also used the "7945" lever according to Pete Serio's book but I believe that the "early" 1970 Firebirds wo/console used the "7433" just like the early 1970 Camaros since they were made in the same factory (Norwood & Van Nuys).

I also assume that the "0700731O" (or "0700731Q") mechanism came with the "7244" lever. The "7244" lever was used on 1970-1978 Firebirds w/console, not the Camaro, and this shifter came from a "late" 1970 Firebird or possibly an "early" 1971 .
 
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