LT1-LT4 Modifications 1993-97 Gen II Small Block V8

gear ?

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Old Mar 24, 2009 | 04:16 PM
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Default gear ?

anyone know what gears are in my 93 6spd ta ? thanks..
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Old Mar 24, 2009 | 04:45 PM
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Originally Posted by snk-huntr
anyone know what gears are in my 93 6spd ta ? thanks..
Should be 3.42's.
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Old Mar 24, 2009 | 07:05 PM
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No 3.42's in '93 fellas...In '93 with the T-56's you have the M28 (2.73 rear gear) and M29 (3.23 rear gear). Check out your option codes and and it will tell ya which one you have.

Year 1993 (M28) / 1993 (M29) / 1994+ (MN6)

1st: 3.36 / 2.97 / 2.66
2nd: 2.07 / 2.07 / 1.78
3rd: 1.35 / 1.43 / 1.30
4th: 1.00 / 1.00 / 1.00
5th: 0.80 / 0.80 / 0.74
6th: 0.62 / 0.62 / 0.50
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Old Mar 24, 2009 | 07:09 PM
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Originally Posted by StealthFormula
No 3.42's in '93 fellas...In '93 with the T-56's you have the M28 (2.73 rear gear) and M29 (3.23 rear gear). Check out your option codes and and it will tell ya which one you have.
Correct.

Kinda scary an M6 car with 2.73's!
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Old Mar 24, 2009 | 07:10 PM
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Originally Posted by My95Z
Correct.

Kinda scary an M6 car with 2.73's!
I swapped a T56 into my buddy's '98 B4C w/ 2.73's. He said it was garbage with those gears. He'll be swapping in a 3.42 rear end soon!
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Old Mar 24, 2009 | 07:13 PM
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Actually in '93 the tranny gear ratios were more aggressive so having 2.73's in an M28 '93 6-speed isn't like running 2.73's with a later 6-speed ('94-'02).

I edited this into my other post but this explains what I'm talking about...
Year 1993 (M28) / 1993 (M29) / 1994+ (MN6)

1st: 3.36 / 2.97 / 2.66
2nd: 2.07 / 2.07 / 1.78
3rd: 1.35 / 1.43 / 1.30
4th: 1.00 / 1.00 / 1.00
5th: 0.80 / 0.80 / 0.74
6th: 0.62 / 0.62 / 0.50


The 2.73 and 3.23 M28 and M29's actually have a shorter 1st and 2nd gear than a later 6-speed and 3.42's. Unsure of the rest of the gears since I didnt do all the math.
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Old Mar 24, 2009 | 07:29 PM
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is the option code in the glove box?
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Old Mar 24, 2009 | 07:30 PM
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I found a mn6 and m29 in the glove box.
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Old Mar 24, 2009 | 07:32 PM
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RPO codes for gearing -

GU2 - 2.73
GU4 - 3.08
GU5 - 3.23
GU6 - 3.42
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Old Mar 24, 2009 | 07:34 PM
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Originally Posted by My95Z
Correct.

Kinda scary an M6 car with 2.73's!
i ran w/ a 2.73 in my M6 93z for 3 years. not bad on gas but not great for the drag.

btw you better double check your gears by spining the wheels and seeing how many times the drivshaft turns with 1 full wheel spin cause my code in my glove box said i had 3.23 and turned out i actully had 2.73 and ended up buying the wrong ring&pinion
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Old Mar 24, 2009 | 07:42 PM
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Originally Posted by sepno77
i ran w/ a 2.73 in my M6 93z for 3 years. not bad on gas but not great for the drag.

btw you better double check your gears by spining the wheels and seeing how many times the drivshaft turns with 1 full wheel spin cause my code in my glove box said i had 3.23 and turned out i actully had 2.73 and ended up buying the wrong ring&pinion
how many times should the drive shaft spin if I have 323,s ,the code was gu5.
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Old Mar 24, 2009 | 07:47 PM
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For every rotation of the wheels, the driveshaft will turn 3.23 times.

If it says GU5, you have 3.23s. That simple (if you aren't drunk).

Last edited by RamAir95TA; Mar 24, 2009 at 07:58 PM.
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Old Mar 24, 2009 | 07:52 PM
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Originally Posted by RamAir95TA
For every rotation of the driveshaft, the wheels will turn 3.23 times.

If it says GU5, you have 3.23s. That simple.
i think you got this backwards. with 1 full rotation of you wheel ur driveshaft should spin 3.23 times
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Old Mar 24, 2009 | 07:57 PM
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Originally Posted by sepno77
i think you got this backwards. with 1 full rotation of you wheel ur driveshaft should spin 3.23 times
Too many Captain and Cokes. Fixed!
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Old Mar 24, 2009 | 08:07 PM
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GM didn't offer 3.42 gears for the '93 Camaro. It was either 2.73 or 3.23 for the MN6.

Last edited by RedFire04; Mar 24, 2009 at 08:14 PM.
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Old Mar 24, 2009 | 11:07 PM
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Originally Posted by sepno77
i ran w/ a 2.73 in my M6 93z for 3 years. not bad on gas but not great for the drag.

btw you better double check your gears by spining the wheels and seeing how many times the drivshaft turns with 1 full wheel spin cause my code in my glove box said i had 3.23 and turned out i actully had 2.73 and ended up buying the wrong ring&pinion
Thats a good idea, the way these things blow 10 bolts you never know what has been swapped in place unless you are the original owner.
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