MM5 vs MXO

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Jul 25, 2012 | 07:50 AM

Termanalor117

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Joined: Sep 2011

Posts: 152

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From: Florida

Car: 1991 Pontiac Firebird Trans Am

Engine: 1987 Chevy 355 TPI Mild Cam

Transmission: 5-Speed T-5 WC

Axle/Gears: 3.42

MM5 vs MXO

Ok so im trying to figure out what these mean and what the difference is, its RPO codes for transmissions but i have no idea what they mean.

Also I have a 1991 Pontiac Firebird Trans Am GTA, what one do I have? Thanks

Jul 25, 2012 | 08:10 AM

z28yourstang

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iTrader: (1)

Joined: Feb 2012

Posts: 168

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From: vicksburg,mississippi

Car: 1986 z28

Engine: 350 hsr

Transmission: probuilt 700r4/edge 2800

Axle/Gears: stock 4th gen 3.23

Re: MM5 vs MXO

Not sure what mm5 means but i know that mxo is for the 700r4 in the in the 350 cars

Jul 25, 2012 | 01:01 PM

91phoenix

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iTrader: (5)

Joined: Aug 2010

Posts: 916

Likes: 9

From: Wichita Falls, TX

Car: 91 Firebird,00 c2500,75 Vette

Engine: 3.1 but 350 soon, 350, 350

Transmission: T56 soon

Axle/Gears: stock 3.42 Posi to come

Re: MM5 vs MXO

mm5 should be for a 5 speed.

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