converter id please

[Fast4Ward]

curious as to what this tc is, see if these stamps id it. thnx.
GM 18-A M-7639 TTM 899 1A104 stamped "9" or "6" all the way around.

 

[dartguy340]

Mine had the 6's or 9's all around the outer edge also. I think you have a "D5", which is the stock convertor for '86/'87 TR Buicks.

 

[Fast4Ward]

Mine had the 6's or 9's all around the outer edge also. I think you have a "D5", which is the stock convertor for '86/'87 TR Buicks.

i believe the D5 is usually stamped D5 so this may not be a D5.

 

[Duts87ss]

i believe the D5 is usually stamped D5 so this may not be a D5.

Exactly what the one that came out of my Monte had stamped on it.

 

[GNeric]

D5's are stamped either with the D5 or just the 5. The 6 is usually stamped upside down and they are normally 1639 stall converters. Can be made to stall similar to a D5 with the proper stator and someone who can rework the fins. Better off getting the right converter first. I used to have stacks of "6" converters that I had converted to D5 specs and they never worked like a real D5 did. Just slightly off so I quit having them done.