4.3L V6 FI OHV 12V F2 Red
4.3L V6 FI OHV 12V NF2
5.3L 8 BLACK
5.3L V8 FI OHV F Blue
2.7L 4 WHITE
6.0L V8 FI OHV 16V NF2 White
Unknown
5.3L V8 FI OHV 16V NF2 Gray
5.3L V8 FI OHV 16V NF2