Hedman Hedders 69280 Long Tube Headers Big Block Chevy 4WD Truck

The Hedman Hedders 69280 are standard-duty uncoated long tube exhaust headers designed specifically for 1982-1991 Chevrolet and GMC 4WD trucks, Blazers, Jimmys, and Suburbans equipped with Big Block Chevy engines (396-502 cubic inch). These performance headers are engineered to deliver significant gains in horsepower, torque, and fuel economy over restrictive factory exhaust manifolds.

Key Features:

• 1-3/4 inch diameter CNC mandrel-bent primary tubes for smooth exhaust flow
• 3 inch ball and socket collectors with gasketless design for easy installation
• Mild steel construction with hand-welded joints for consistent quality
• Includes header gaskets, flange bolts, and collector hardware
• Compatible with air conditioning, power steering, and both manual and automatic transmissions
• Limited lifetime warranty against defects in tubes and welds

These headers feature Hedman's unique gasketless ball and socket collector design, which allows your exhaust system to connect even if not perfectly aligned. The headers ship with a temporary black paint coating that will burn off during initial use; high-temperature paint or ceramic coating is recommended for long-term protection. Each set is manufactured in the USA using smooth-flowing mandrel-bent tubing that is hand-welded to ensure precision fitment.

Important Notes: These headers are designed for racing applications and are not legal for street use on emissions-controlled vehicles. Modification to stock exhaust may be required to retain catalytic converters. Not compatible with smog injection or A.I.R. cylinder heads. On 502 cubic inch engines with aluminum Generation 6 cylinder heads, minor notching of header flanges may be necessary for proper clearance.