• 1973-1987 Chevy/GMC 1/2-Ton, 3/4-Ton, 1-Ton 1500, 2500, 3500 Trucks
• 1973-1987 2WD Blazer, Jimmy, Suburban, Tahoe, Yukon
• 1973-1991 4WD Blazer, Jimmy, Suburban, Tahoe, Yukon
• 1973-1987 Chevy/GMC 1-Ton 3500, 2WD, Crew, Standard Cab Dually
• 1973-1991 Chevy/GMC 1-Ton 3500, 4WD, Crew, Standard Cab Dually

Notes:

• Fits D-Port cylinder heads including ZZ4 crate engines.
• Will fit most angle plug heads including factory Chevrolet 'Bow-Tie' heads.
• Non catalytic converter equipped.
• Does not fit 4 wheel drive 4 speed applications with bell housing mounts.
• Will fit 4 wheel drive floor shift manual transmissions.

Emission Code:

• The product accompanying this document is legal only for off-highway use (except in California or states that have adopted California emission standards), racing use or for use on pre-emission-controlled motor vehicles/motor vehicleengines (pre-1974 domestic vehicles certified to California standards, pre-1974 domestic vehicles certified to federal standards and all pre-1974 foreign vehicles), per the manufacturer's application guide.