yes 71 on the first PTK

later on PTK with limeter built into it keeps it from kick down when over 40 mph

some early 904 ptk valves can be swaped to the 70 back non PTK vb for a PTK function

I just removed the BB 727 VB with PTK and went forward shift,full manual,low band apply VB from CRT

just to drop the linkage headaches on swaping a 440 into my 88 truck