Cometic Chevy Gen1 Small Block V8 .036in MLS Cylinder Head Gasket 4.165in Bore Vortec Heads Marketing>Marketing Direct bolt on easy installation to Direct bolt on easy installation to OEM pipe this loop may not fit your particular application without shimming and or exhaust alteration 1986 Excalibur Phaeton Base 1980 1986 GMC C1500 Base 1980 GMC C1500 Heavy Half 1980 1986 GMC C1500 High Sierra 1980 1986 GMC C1500 Sierra Classic 1980 1982 GMC C1500 Sierra Grande 1980 1982 GMC C1500 Street Coupe 1980 1986 GMC C1500 Suburban Base 1980 1986 GMC C1500 Suburban High Sierra 1980 1986 GMC C1500 Suburban Sierra Classic 1980 1982 GMC C1500 Suburban Sierra Grande 1980 1986 GMC C2500 Base 1980 1986 GMC C2500 High Sierra 1980 1986 GMC C2500 Sierra Classic 1980 1982 GMC C2500 Sierra Grande 1980 1986 GMC C2500 Suburban Base 1980 1986 GMC C2500 Suburban High Sierra 1980 1986 GMC C2500 Suburban Sierra Classic 1980 1982 GMC C2500 Suburban Sierra Grande 1980 1986 GMC C3500 Base 1980 1986 GMC C3500 High Sierra 1980 1986 GMC C3500 Sierra Classic 1980 1982 GMC C3500 Sierra Grande 1981 1986 GMC Caballero Amarillo 1980 1986 GMC Caballero Base 1981 GMC Caballero Conquista 1980 1986 GMC Caballero Diablo 1980 GMC Caballero Laredo 1981 GMC Caballero Royal Knight 1980 1986 GMC G1500 Rally 1983 1984 GMC G1500 Rally Custom 1980 1986 GMC G1500 Rally STX 1980 1986 GMC G1500 Vandura 1980 1986 GMC G2500 Rally 1983 1984 GMC G2500 Rally Custom 1980 1986 GMC G2500 Rally STX 1980 1986 GMC G2500 Vandura 1980 1986 GMC G3500 Magnavan 1980 1986 GMC G3500 Rally 1980 1986 GMC G3500 Rally Camper Special 1981 1986 GMC G3500 Rally Custom 1980 1986 GMC G3500 Rally STX 1980 1986 GMC G3500 Vandura 1980 1986 GMC G3500 Vandura Special 1980 1986 GMC Jimmy Base 1980 1985 GMC Jimmy High Sierra 1980 1986 GMC Jimmy Sierra Classic 1980 1982 GMC Jimmy Sierra Grande 1980 1982 GMC Jimmy Street Coupe 1980 1986 GMC K1500 Base 1980 1986 GMC K1500 High Sierra 1980 1986 GMC K1500 Sierra Classic 1980 1982 GMC K1500 Sierra Grande 1980 1986 GMC K1500 Suburban Base 1980 1986 GMC K1500 Suburban High Sierra 1980 1986 GMC K1500 Suburban Sierra Classic 1980 1982 GMC K1500 Suburban Sierra Grande 1980 1986 GMC K2500 Base 1980 1986 GMC K2500 High Sierra 1980 1986 GMC K2500 Sierra Classic 1980 1982 GMC K2500 Sierra Grande 1980 1986 GMC K2500 Suburban Base 1980 1986 GMC K2500 Suburban High Sierra 1980 1986 GMC K2500 Suburban Sierra Classic 1980 1982 GMC K2500 Suburban Sierra Grande 1980 1986 GMC K3500 Base 1980 1986 GMC K3500 High Sierra 1980 1986 GMC K3500 Sierra Classic 1980 1982 GMC K3500 Sierra Grande 1980 1985 GMC P2500 Base 1980 Oldsmobile Cutlass Base 1980 1981 Oldsmobile Cutlass Brougham The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C 482 F)