m29 or m28

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02-20-2009, 09:40 PM

goinfast

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m29 or m28

how do i know if i have the m28 or m29?

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02-20-2009, 10:00 PM

BizZzatch350

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Check the RPO codes, do you see M28 or M29? Its in the glove box. Also you should see GU5 if it's a M29 car since all M29s had 3.23s from the factory. M28cars had 2.73s from the factory, so you will see the RPO code GU3.

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02-21-2009, 01:59 PM

goinfast

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thanks for the info. i have a m29

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02-21-2009, 02:50 PM

BizZzatch350

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Good deal, same 1st to 4th gearing as the C5 Z06 six speed

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02-21-2009, 06:28 PM

93_z28

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Quote:

Originally Posted by goinfast

thanks for the info. i have a m29

i had an m29 in mine to.it was awsome for the street and VERY easy to sell when i went th400

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02-21-2009, 06:30 PM

1badzee

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I have an M29 for sale.. no one wants it though lol

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02-21-2009, 06:33 PM

93_z28

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Quote:

Originally Posted by 1badzee

I have an M29 for sale.. no one wants it though lol

sell it to an auto x`er.i had mine for sale for about 10 minutes and had 3 guys wanting it.i sold it to the first guy that posted.

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02-22-2009, 08:07 AM

the_merv

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Quote:

Originally Posted by BizZzatch350

M28cars had 2.73s from the factory, so you will see the RPO code GU3.

That code is GU2..

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02-22-2009, 08:38 AM

BizZzatch350

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Quote:

Originally Posted by the_merv

That code is GU2..

Correctamundo

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02-22-2009, 07:12 PM

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kgkern01

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I put one in my 95, and I LOVE it! I had to get used to the shorter 6th gear (.62 vs .5) but definitely a noticeable difference. I plan on doing 3.73 or 3.90's in the rear with it after I eventually get my 385 built.