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#1
07-17-2002, 12:39 AM
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M-20 decoding questions
My 69 RS/SS 350 vin is 124379N671780 build date 08C
tranny # is P9H20A which would indicate a 6/20/69 build date for the M-20. Is it more likely that the "H" is correct or am I misreading what could be an "M" which would make the build date on the M-20 8/20/69. Is it common for the tranny to be approx. 2 months ahead of the cars build date? Casting # on tranny is 3925660, bell housing 389962. There are also some smaller vertical numbers aft of the larger P9H20A, what are these for? Thanks in advance!
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69 RS/SS350 Azure Turquoise Muncie 4spd 
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#2
07-17-2002, 12:49 AM
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Re: M-20 decoding questions
are the other numbers 19N671780 ??? if so its the org trannyt for your car.
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IF YOU DON'T STAND BEHIND OUR TROOPS, PLEASE, FEEL FREE TO STAND IN FRONT OF THEM !!!
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#3
07-17-2002, 01:04 AM
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Re: M-20 decoding questions
Yes !!! those are the other smaller numbers! very clear to read. this car was sold to me as a numbers matching car two months ago, I believed the guy then but really didn't care cause the car is awesome. Would the Vin also be on the rear axle? I know it is date coded correct as H59 which translates to 8/05/69 another code I have found is BT which equals 3.55 posi. Right?
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69 RS/SS350 Azure Turquoise Muncie 4spd
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#4
07-17-2002, 01:17 AM
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Re: M-20 decoding questions
H59 is Aug 5 1969 no VIN on the rear end but there should be a partial VIN like the one on the tranny on the engine itself. Either on the front engine pad to the front passenger side head or by the oil filter on the block . Also does your cowl tag show and X55 by chance. Also can you go to the Team Camaro pages also http://www.camaros.net/cgi-bin/forum/Ultimate.cgi and post all your info off the engine/tranny/cowl tag and rear end under the Tag team , so it can be recorded
Mahalo section
__________________
IF YOU DON'T STAND BEHIND OUR TROOPS, PLEASE, FEEL FREE TO STAND IN FRONT OF THEM !!!
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#5
07-17-2002, 01:26 AM
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Re: M-20 decoding questions
Jeff, thanks so much...
cowl tag reads Body by Fisher ST6912437 nor103707 BDY Tr 727 55B PNT 08C X11 General Motors Corporation etc. According to Camaro research Group X11 includes SS350 I will try to go to that site soon and enter this data. I know there are numbers on the engine block pad but I can't read them without pulling the alternator.
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69 RS/SS350 Azure Turquoise Muncie 4spd
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#6
07-17-2002, 07:14 AM
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Re: M-20 decoding questions
No need to post them there. This is good enough.
What's the rest of the BT____ axle code? Shouldn't have to pull the alternator, just look from the side.
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Kurt S - CRG
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