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Need help with some transmission numbers

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Old 12-13-2003, 11:05 PM
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68350hp
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Default Need help with some transmission numbers

Can you guys tell me if I have an M-20 or an M-21? Here are the numbers I got off the right side of the tranny:
392566
3088336
PH3304
14S409112
Can you guys tell me what I have from these?
Old 12-14-2003, 11:18 PM
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LAvetteman
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Default Re: Need help with some transmission numbers (68350hp)

P... MUNCIE
H.... makes no sense, this character should be the number of the production year .
third character should be a letter for build month.
4th & 5th ...... day of month
6th ...... should be
A... M 20
B... M 21
C... M 22

S409112 should be the last 7 digits of your VIN#

Recheck those numbers, I read mine wrong years ago, they are in a heck of a place for the eyes to see.



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