Huh??? Only certain small block are external balance. I don't believe any, are under 1800 or so for stall speed. Locking would depend upon the transmission. Give details on what you specfically have. Engine, trans, car, gear, etc...
I thought all 360 small blocks were externally balanced by the dampener ?
72 - 360 - larger unknown cam
B body - Convertible
294 gears - 8-3/4 rear end
So if that transmission came with a locking converter, you have to install a new one that locks ?
