Ignition - Spark Plug Application & Gap
Number 85-6(Gasoline)-11 Date 1/85Subject: SPARK PLUG AND GAP INFORMATION- 1981 thru 1985
The following information is being supplied to clarify any confusion about recommended spark plugs and their appropriate gaps for all Pontiac vehicles.
YEAR ENGINE VIN CODE SERIES SPARK PLUG GAP
1981 1.6L 9 T R42TS .035"
2.5L 5 X R44TSX .060"
2.8L X X R43TS .045"
3.8L A A,B,F R45TS8 .080"
4.3L S A,B,F R45TSX .060"
4.9L W A,F R45TSX .060"
4.9L Turbo T F R45TSX .060"
5.0L Y B R46SX .080"
5.0L H F R45TS .045"
1982 1.6L C T R42TS .035"
1.8L 2bbl G J *R42CTS .035"
1.8L EFI O J *R44XLS .035"
2.5L EFI R,2 A,F,X R44TSX .060"
2.8L X,1,Z A,F,X *R43CTS .045"
2.8L Z A,F,X R42CTS .045"
3.8L A G R45TS8 .080"
4.1L 4 G R45TS8 .080"
5.0L 4bbl H F R45TS .045"
5.0L CFI 7 F R45TS .045"
1983 1.6L C T *R42CTS .035"
1.8L EFI O J *R44XLS .035"
2.0L EFI P J R42CTS .035"
2.5L EFI R,2 A,F,X *R44TSX .060"
2.8L L,X,1 A,F,X R43CTS .045"
2.8L H.O. Z X R42CTS .045"
3.8L A G R45TS8 .080"
3.8L 9 B R45TS .045"
5.0L 4bbl H G,F,B R45TS .045"
5.0L CFI S F R45TS .045"
5.0L H.O. 7 F R42CTS .045"
YEAR ENGINE VIN CODE SERIES SPARK PLUG GAP
1984 1.6L C T R42CTS .035"
1.8L EFI O J R44XLS .035"
1.8L Turbo J J R42CXLS .035"
2.0L EFI P J R42CTS .035"
2.5L EFI R,2 A,F,P,X *R43TSX .060"
2.8L H.O. Z,L A,F,X R42CTS .045"
2.8L X,1 A,F,X R43CTS .045"
3.8L A B,G R45TSX .060"
5.0L H B,F,G R45TS .045"
5.0L H.O. G F R44TS .045"
1985 1.6L C T R42CTS .035"
1.8L EFI O J R44XLS .035"
1.8L Turbo J J R42CXLS .035"
2.5L EFI R,2,U A,F,P R43TSX .060"
2.8L 2bbl X A R43CTS .045"
2.8L MFI 9,W,S A,F,P R42CTS .045"
3.0L MFI L N R44LTS .040"
3.8L A G R45TSX .060"
4.3L EFI Z B R43CTS .035"
5.0L 4bbl H B,F,G R45TS .045"
5.0L H.O. G F R44TS .045"
5.0L TPI F F R43CTS .045"
*Revised from original specifications.