68 Camaro with an M21 - Team Camaro Tech
Tech 2001 General Tech questions from 2001
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post #1 of 14 (permalink) Old Jan 6th, 02, 03:22 PM Thread Starter
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Paul
 
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I'm looking at a 68 Camaro with an M21 trans. Was the M21 an option for any camaro that year besides the Z/28 and the 396/SS?
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post #2 of 14 (permalink) Old Jan 6th, 02, 08:53 PM
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Big daddy
 
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yes the m21 was an option,I bought one new in 68 396 375hp L78.

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post #3 of 14 (permalink) Old Jan 7th, 02, 04:37 PM Thread Starter
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Yes, but was it an option in any other car outside of the Z/28 and the ss/396?
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post #4 of 14 (permalink) Old Jan 7th, 02, 04:52 PM
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I think only the high perf. models got the Muncie. All others used a saginaw 4 speed.
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post #5 of 14 (permalink) Old Jan 8th, 02, 04:37 AM Thread Starter
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I looked at the CRG website and from the 68 table that they have:

http://www.camaros.org/diffs68.shtml

The M21 was only an option for the Z/28, 396/350 and 396/375. I was wondering if the existance of an M21 in a 68 SS car confirms that it was an SS/396 car.
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post #6 of 14 (permalink) Old Jan 8th, 02, 04:50 AM
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I guess you would have to determine if the transmission was original to the car, first.


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Mark Canning
1969 Indy Pace Car
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post #7 of 14 (permalink) Old Jan 8th, 02, 04:52 AM Thread Starter
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Yes the trans is original.
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post #8 of 14 (permalink) Old Jan 8th, 02, 08:34 AM
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Paulm,
If you are trying to verify if the car was a big block SS originally look at the heater box and pull back the trunk weatherstripping at the trailing edge of the trunk and check for the presense of black paint that may have been painted over if the car was resprayed since the SS396 cars had the blacked out tail panel.
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post #9 of 14 (permalink) Old Jan 8th, 02, 09:40 AM Thread Starter
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The entire car has been repainted. The heater box is for a big block....I think that I've checked most of the "tips" that I've read on this site and they're all there.

I was just wondering if the presence of the M21 confirms that it was a big block car.
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post #10 of 14 (permalink) Old Jan 8th, 02, 09:49 AM
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SY1,

The SS396 cars had the blacked out tail panel only on light colored cars. I don't think you would find the tail panel painted black on the dark colored cars, such as black or fathom green...

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post #11 of 14 (permalink) Old Jan 8th, 02, 11:48 AM
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paulm, I know you are confident it is the "original" muncie but have you checked the numbers to see if they match the vin? Also is there a motor in the car? If so, how have you confirmed it is a M21?

Not trying to pick it apart but it sounds like you are looking to buy this car?
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post #12 of 14 (permalink) Old Jan 8th, 02, 01:21 PM Thread Starter
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My wife won't let me buy anymore camaros unless I sell one first!!! Fat chance that I'm selling one of my numbers matching convertibles!!!

I'm just helping to ID a car....Anyway, the partial vin matches, the assembly code is within a couple of weeks of the build date and....Correct me if I'm wrong, but I thought the M21 could be identified by the number of grooves on the input shaft....which there is one.

The engine is a big block....The stamp has a three character code, so....Again correct me if I am wrong, but I thought that post 1970 engines were stamped with a three digit code instead of two, so it couldn't be the original engine.

The rear end(I know you didn't ask, but I'll add it anyway) is a twelve bolt with the 67-69 casting 3894860, and the stamp is also dated slightly before the build date.

And....if I type something stupid or something that doesn't make sense....please Pick it apart!!!
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post #13 of 14 (permalink) Old Jan 8th, 02, 02:52 PM
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Sounds like you have "inspected" it thoroughly! And sounds like one I would like to have.
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post #14 of 14 (permalink) Old Jan 8th, 02, 02:56 PM Thread Starter
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One other thing....The car had non-power 4 wheel drum brakes, so I guess that eliminates the Z/28 option.

Can you confirm that the M21 option was exclusive to Z/28's and SS/396 cars?

[This message has been edited by paulm (edited 01-08-2002).]
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