Ok so I have in the picture a circle d 278mm
and an unknown stall both for 4l80e.
I know details about the 278mm
but anyone have insight on the smaller one? I don’t see any markings really but I bought it like 10 years ago and it’s been on the shelf since.
I think it’s an Art Carr or something like that.
is it lockup? Can I use it on a stock transmission? Should I take it somewhere and have it cut open and inspected? Thanks

 

Bueller?