Hedman Hedders 68440 Long Tube Exhaust Headers 1984-1991 Corvette Small Block Chevy

The Hedman Hedders 68440 is a standard-duty long tube exhaust header designed specifically for 1984-1991 Chevrolet Corvettes equipped with Small Block Chevy (Gen 1) engines ranging from 283-400 cubic inches. These headers provide superior exhaust flow compared to factory manifolds, delivering significant improvements in horsepower, torque, and throttle response.

Key Specifications:

• Primary tube diameter: 1-5/8 inches (18-gauge mild steel)
• Collector outlet diameter: 3 inches
• Header style: Full-length long tube design for maximum top-end power
• Flange thickness: 3/8 inch laser-cut steel flanges
• Finish: Uncoated with temporary black paint (burns off during normal operation)

Features and Benefits:

• CNC mandrel-bent tubes ensure smooth exhaust flow and consistent quality
• Hand-welded construction for superior durability
• Unique gasketless ball and socket collector design allows up to 20 degrees of connection flexibility for easier installation
• Includes all necessary mounting hardware, gaskets, header flange bolts, collector bolts, and reducers
• Compatible with air conditioning, power steering, and both automatic and manual floor-shift transmissions
• Will fit with angle plug heads (Chevy aluminum only, L98)
• Made in the USA since 1954

Important Notes:

• Not legal for street use on 1975 and later model years in emissions-regulated areas
• Designed for vehicles without smog injection or injection heads
• May require modification to stock exhaust system

Hedman Hedders backs these headers with a Limited Lifetime Warranty against manufacturing defects, including cracks in tubes and welds. Each set is manufactured to exacting standards to ensure both performance gains and long-lasting reliability.