What tranny do I have on my '72 Cuda?

[EMCD]

I have a auto on the column with a 340 V8. Do I have the 727 tranny? Do I have a 8 3/4 posi rear end?

 

[burdar]

I'm pretty sure the 340's used a 727. You can easily tell the difference by looking at the pan.

The rear end will be an 8 3/4. Standard gears for a 340 car were 3.23's with NO sure-grip. 3.23 Sure-Grip and 3.55 Sure-Grip were optional.

 

[burntorange70]

Should be a 727 and a 8 3/4. But you never know till you check.


Here is a way to ID your trans. http://www.forebodiesonly.com/forum/showthread.php?t=62



Here is a way to ID your rear end. To see if it is a sure grip or not. Jack up the back of the car then turn one tire. If the other tire turns the same way it is a sure grip. If it turns the opposite way then it is an open rear.

 

[burdar]

A 340 car wouldn't have come with a small rear end. It has the 8 3/4. Was the small rear end available in an E-body in 72 with the /6? I know by 73, all rear ends in the E-bodies were 8 3/4.

You could still get an 8 1/4 in a B-body in 73 though.

 

[burntorange70]

Would not hurt to check. After 40 years or so you never know what some of the previous owners have done to a car. The question was not should it have a 8 3/4 it was does it have an 8 3/4. Now he can check and know for sure.

 

[EMCD]

I'll check to see tomorrow, but I'm pretty sure it's the third one down on the chart above. I'll ask the mechanic on Friday to tell me what I have.