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Topic: Transmission is out - need some ID help

in Forum: C3 Driveline Components


Transmission is out - need some ID help

Posted: 6/26/06 9:32pm Message 1 of 6
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Huntsville, AL - USA
Joined: 11/15/2003
Posts: 857
Vette(s): 1971 convertible,375 HP 350ci,Muncie 4-speed,Edelbrock aluminum heads and RPM air-gap manifold,HEI distrubiter - old school mechanical tach drive. LOUD side exhaust!

I got the transmission out this evening. That was definitely not fun. Even with taking out the cross member, it was still a . I must say that I was past my level of knowledge and experience doing it.Here are a couple pics of the numbers.

http://www.C3VR.com/member_uploads/4601_4700/4691/trans_tail _number.JPG 

http://www.C3VR.com/member_uploads/4601_4700/4691/trans_vin. JPG 

 

And here is my VIN:

194671S102694

 

Am I correct in reading that this is the transmission that came with the car? I read the numbers as a Muncie, made in 1971, August 27. Is it an M20 or M21?

 

Thanks in advance to all the number reading gurus!




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Transmission is out - need some ID help

Posted: 6/26/06 9:53pm Message 2 of 6
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Duncanville, TX - USA
Joined: 11/8/2003
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
You are correct in assessing it is the orig. unit for your car. Excellent!! The vin matches.
The "P" is for Muncie
the "1" is for the '71 model year, not the year of manufacture.(this trans was built in Aug., of 1970)
M = August
27 = day
There should be more nums there, tho, that would give the ratio. After the "7" in 27, I can barely see them(it). Maybe if you take a close look you can make them out.
Should be a B, A, C, or P.


Joel Adams
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Transmission is out - need some ID help

Posted: 6/26/06 10:07pm Message 3 of 6
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Huntsville, AL - USA
Joined: 11/15/2003
Posts: 857
Vette(s): 1971 convertible,375 HP 350ci,Muncie 4-speed,Edelbrock aluminum heads and RPM air-gap manifold,HEI distrubiter - old school mechanical tach drive. LOUD side exhaust!
The last letter is an A. It's barely visible - very faint.


Transmission is out - need some ID help

Posted: 6/27/06 6:25am Message 4 of 6
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20219
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
"A" = M20 Wide ratio 2.52 first gear(low)


Joel Adams
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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Transmission is out - need some ID help

Posted: 6/27/06 6:32am Message 5 of 6
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Huntsville, AL - USA
Joined: 11/15/2003
Posts: 857
Vette(s): 1971 convertible,375 HP 350ci,Muncie 4-speed,Edelbrock aluminum heads and RPM air-gap manifold,HEI distrubiter - old school mechanical tach drive. LOUD side exhaust!

Thanks a bunch Joel!

So it looks like my car is original. I guess the orginal owner who did the old frame off cut out the welded in cross member and put a bolt-on in. I can live with that mod . Now I guess I DO have to get the original engine down here .




Transmission is out - need some ID help

Posted: 6/27/06 6:39am Message 6 of 6
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20219
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
John, it would be very obvious if the crossmember had been cut out. Here's an idea...
At the driver's side rear of the frame is the vin #. It is stamped on the top of the frame, to the rear of the tire area, by the rear body mount. They can be really hard to see, but with some cleaning/scraping, and a mirror, you should be able to see it. If that number matches your vin, then it is the orig. frame, also...just "bubba-ized"!


Joel Adams
C3VR Lifetime Member #56    

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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

in Forum: C3 Driveline Components


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