Turbo 350 MX2
Thread Starter
Intermediate
Joined: Jan 2010
Posts: 36
Likes: 0
From: Columbus MS
Turbo 350 MX2
First off I would like to say this is my first post here. I have read several post before and found there are some very knowledgeable users here so I figured I would give it a shot.
To the point now....
I recently bought my first Corvette. Its a 1981 with and automatic transmission. I was in the process of trying to do several things. 1st I am trying to figure out how much of the car is original so I did some number checks on the engine and all passed.
Well I also was trying to tell more about the transmission so I could hook up the lock-up torque converter back up. While doings so I noticed the RPO number on the side of the transmission had MX2 on the side of it. I was told when I traded for the car that the transmission and engine was original but the engine had been rebuilt. But after seeing the color of the wires that came off of the electrical connector on the side of the transmission I noticed that they weren't the same color as the schematics showed they were.
That leaves me to question is this the original transmission? Did GM used some of the Buick universal bolt pattern 350c transmissions (MX2) in the Corvettes or is this transmission one that someone replaced the original one with?
To the point now....
I recently bought my first Corvette. Its a 1981 with and automatic transmission. I was in the process of trying to do several things. 1st I am trying to figure out how much of the car is original so I did some number checks on the engine and all passed.
Well I also was trying to tell more about the transmission so I could hook up the lock-up torque converter back up. While doings so I noticed the RPO number on the side of the transmission had MX2 on the side of it. I was told when I traded for the car that the transmission and engine was original but the engine had been rebuilt. But after seeing the color of the wires that came off of the electrical connector on the side of the transmission I noticed that they weren't the same color as the schematics showed they were.
That leaves me to question is this the original transmission? Did GM used some of the Buick universal bolt pattern 350c transmissions (MX2) in the Corvettes or is this transmission one that someone replaced the original one with?
Thread Starter
Intermediate
Joined: Jan 2010
Posts: 36
Likes: 0
From: Columbus MS
Wonder why GM would put a Buick transmission in a Corvette? Were they just using up the available 350c transmissions before the switched to the 700r4? Am I correct in the MX2 RPO code meaning it was a Buick transmission?
Drifting
Joined: Apr 2008
Posts: 1,992
Likes: 56
From: Antioch IL
Don check out this link it may shed some more light.
http://advanceadapters.com/resources/1631/GM-TH350.html
i can tell you that GM did make some dual drilled patterned cases for Chevy and Buick, olds etc applications.
By the way the MX2 is very hard to find because of its short production run.
http://advanceadapters.com/resources/1631/GM-TH350.html
i can tell you that GM did make some dual drilled patterned cases for Chevy and Buick, olds etc applications.
By the way the MX2 is very hard to find because of its short production run.
Last edited by larryg3; Jan 19, 2010 at 11:09 PM. Reason: spelling
1st Gear
Joined: Apr 2021
Posts: 1
Likes: 0
1981 with a buick trans
First off I would like to say this is my first post here. I have read several post before and found there are some very knowledgeable users here so I figured I would give it a shot.
To the point now....
I recently bought my first Corvette. Its a 1981 with and automatic transmission. I was in the process of trying to do several things. 1st I am trying to figure out how much of the car is original so I did some number checks on the engine and all passed.
Well I also was trying to tell more about the transmission so I could hook up the lock-up torque converter back up. While doings so I noticed the RPO number on the side of the transmission had MX2 on the side of it. I was told when I traded for the car that the transmission and engine was original but the engine had been rebuilt. But after seeing the color of the wires that came off of the electrical connector on the side of the transmission I noticed that they weren't the same color as the schematics showed they were.
That leaves me to question is this the original transmission? Did GM used some of the Buick universal bolt pattern 350c transmissions (MX2) in the Corvettes or is this transmission one that someone replaced the original one with?
To the point now....
I recently bought my first Corvette. Its a 1981 with and automatic transmission. I was in the process of trying to do several things. 1st I am trying to figure out how much of the car is original so I did some number checks on the engine and all passed.
Well I also was trying to tell more about the transmission so I could hook up the lock-up torque converter back up. While doings so I noticed the RPO number on the side of the transmission had MX2 on the side of it. I was told when I traded for the car that the transmission and engine was original but the engine had been rebuilt. But after seeing the color of the wires that came off of the electrical connector on the side of the transmission I noticed that they weren't the same color as the schematics showed they were.
That leaves me to question is this the original transmission? Did GM used some of the Buick universal bolt pattern 350c transmissions (MX2) in the Corvettes or is this transmission one that someone replaced the original one with?
my 81 build 8803 is also a buick trans .
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,117
From: Crossville TN
Probably an 'interim' change forced by GM demand to get fuel mileage increased. L/U clutch transmission was an improvement...although small. Change to O/D trans with L/U was the 'real deal' (700R4).
Safety Car
Joined: Nov 2008
Posts: 3,717
Likes: 551
From: Seattle Washington
1980 had the Lock Up Converter THM 350 as well. About the time the warranty ran out ran out one day My Converter " Locked Up ". I drove it probably 150 miles late at night back to my neighborhood Trans Shop and left it there. Came back in the AM and told them its " Locked up " and they told me that's impossible. They started the car put in drive and it died. Said, never seen that before guess it needs a new converter which it did.
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