K 20 3/4 Ton Pickup 4WD L6-292 4.8L VIN T 1-bbl (1983)
Fluid Pump: All Technical Service Bulletins
A/T - THM 400 Front Pump Interchangeability
SIL 85-6
SUBJECT: 400
Use the illustrated guidelines in helping to determine the interchangeability of THM 400 pump halves.