So, i pulled my engine and trans today, the transmission, a small block 727 was changed/repaired decades ago because the tail shaft and housing got eaten so i knew it was not the original, but i was wondering a few things.

First i decoded the numbers on the case, and it matches to a 69 or 70 dodge truck, not what should be in a 73 Roadrunner, does that really matter, gear ratios maybe different?

Second, it has a B&M sticker on it with some numbers, i am assuming this is for a shift kit that was added to it at one time, but who knows if its still in there.

Third, does the color of the torque converter mean anything, its turquoise and i dont see any numbers to identify the configuration for stall speed.

any feed back on any of these please let me know, the entire unit is going to be rebuilt, but i just wonder what the heck i have!

Thanks

 

The color matches just what you decoded. It came out of a truck.

 

And a possibility it is a 'built' tranny from B&M. And the gear ratios will be the same from truck to car. 2.45 1st gear, 1.45 2nd gear, 1.00 3rd (drive).

 

I cant imagine that torque converter has a very good stall speed for a beefed up 340 thats gonna be pushing 325 to maybe 350 hp, so it will have to be replaced.


So, with that known, any recommendation on what to do with it?
Build it to suit the engine i am building or get a high performance trans?

Edit: took a closer look at the B&M Sticker, and belive it or not, its the same part number of the Street/Strip model they still carry in their product list. Guess i will be making a call to B&M tomorrow to find out more about it!