Year
Make
Model
Notes
1969 - 1974
Chevrolet
Blazer
Installation requires welding/modification to exhaust system./modification to exhaust system.
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Use big block flapper valve for smog legal applications
1975 - 1986
Chevrolet
C10
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1976 - 1980
Chevrolet
C10
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
1968
Chevrolet
C10 Pickup
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1965 - 1974
Chevrolet
C10 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968 - 1969
Chevrolet
C10 Suburban
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1986
Chevrolet
C10 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1982 - 1985
Chevrolet
C15
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1987
Chevrolet
C20
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
1968 - 1969
Chevrolet
C20 Pickup
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1965 - 1974
Chevrolet
C20 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968 - 1969
Chevrolet
C20 Suburban
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1986
Chevrolet
C20 Suburban
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
1975 - 1986
Chevrolet
C30
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
1968 - 1969
Chevrolet
C30 Pickup
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1965 - 1974
Chevrolet
C30 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1983 - 1986
Chevrolet
C35
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968
Chevrolet
Chevelle
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1964 - 1967
Chevrolet
Chevelle
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
Automatic transmission only.
For use with straight plug heads only.
1968 - 1973
Chevrolet
Chevelle
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Automatic transmission only.
For use with straight plug heads only.
Use big block flapper valve for smog legal applications
1964 - 1973
Chevrolet
Chevelle
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Automatic transmission only.
For use with straight plug heads only.
1968 - 1969
Chevrolet
El Camino
Installation requires welding/modification to exhaust system.
Replacement spark plug wire and/or boot included.
1964 - 1967
Chevrolet
El Camino
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
Automatic transmission only.
For use with straight plug heads only.
1964 - 1987
Chevrolet
El Camino
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Automatic transmission only.
For use with straight plug heads only.
1968 - 1979
Chevrolet
El Camino
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
For use with straight plug heads only.
Automatic transmission only.
1977 - 1978, 1981 - 1986
Chevrolet
K10
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications. Valve
Replacement spark plug wire and/or boot included.
1975 - 1986
Chevrolet
K10
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications. valve required
Replacement spark plug wire and/or boot included.
1968 - 1969
Chevrolet
K10 Pickup
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1965 - 1974
Chevrolet
K10 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968 - 1969
Chevrolet
K10 Suburban
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1986
Chevrolet
K10 Suburban
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
1975 - 1986
Chevrolet
K20
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
1968 - 1969
Chevrolet
K20 Pickup
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1965 - 1974
Chevrolet
K20 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968 - 1969
Chevrolet
K20 Suburban
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1986
Chevrolet
K20 Suburban
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
1977 - 1986
Chevrolet
K30
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
1968 - 1974
Chevrolet
K30 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1986
Chevrolet
K5 Blazer
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1986
Chevrolet
K5 Blazer
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1973 - 1976
Chevrolet
Malibu
Use big block flapper valve for smog legal applications
For use with straight plug heads only.
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Automatic transmission only.
1964 - 1967, 1973 - 1983
Chevrolet
Malibu
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Automatic transmission only.
For use with straight plug heads only.
1975 - 1978
GMC
C15
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1977 - 1978
GMC
C15 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968
GMC
C15/C1500 Pickup
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1974
GMC
C15/C1500 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968
GMC
C15/C1500 Suburban
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1974
GMC
C15/C1500 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
C1500
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
C1500 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1978
GMC
C25
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1978
GMC
C25 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1967 - 1974
GMC
C25/C2500 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968
GMC
C25/C2500 Suburban
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1974
GMC
C25/C2500 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
C2500
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
C2500 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1978
GMC
C35
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1967 - 1974
GMC
C35/C3500 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
C3500
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1970 - 1986
GMC
Jimmy
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1979
GMC
Jimmy
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1975 - 1978
GMC
K15
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1975 - 1978
GMC
K15
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1978
GMC
K15 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968
GMC
K15/K1500 Pickup
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1974
GMC
K15/K1500 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968
GMC
K15/K1500 Suburban
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1974
GMC
K15/K1500 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
K1500
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
K1500 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1978
GMC
K25
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1975 - 1978
GMC
K25 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968
GMC
K25/K2500 Pickup
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1974
GMC
K25/K2500 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968
GMC
K25/K2500 Suburban
Installation requires welding/modification to exhaust system.
Use big block flapper valve for smog legal applications.
Replacement spark plug wire and/or boot included.
1967 - 1974
GMC
K25/K2500 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
K2500
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
K2500 Suburban
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1977 - 1978
GMC
K35
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1968 - 1974
GMC
K35/K3500 Pickup
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1979 - 1986
GMC
K3500
Installation requires welding/modification to exhaust system./modification to exhaust system.
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
1971 - 1977
GMC
Sprint
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Use big block flapper valve for smog legal applications
Automatic transmission only.
For use with straight plug heads only.
1971 - 1977
GMC
Sprint
Use big block flapper valve for smog legal applications
Replacement Replacement spark plug wire and/or boot included. wire and/or boot included.
Automatic transmission only.
For use with straight plug heads only.