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1968-1974 Chevy/GMC Truck Ceramic Coated Headers Big Block 1.75 Tube, 3 Collector See Firment Below

Item EK-61-880516-1
42 Reviews of Flowtech
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$499.95

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      Product Information

      Features, Description, Q&A

      Features

      • Designed for 1968 to 1974 Chevy/GMC 2WD 1/2, 3/4, and 1-ton trucks, Blazer, Jimmy, 1973 to 1974 2WD Suburban, 1968 to 1974 1/2 and 3/4 ton 4WD trucks, and 1973 to 1974 4WD Blazer, Jimmy K5, and Suburban
      • Compatible with 396 to 454 GM big block engines
      • Constructed with 1.75 inch primary tube diameter
      • Features a 3 inch collector diameter with 3-bolt flange and includes a 2.50 inch collector reducer outlet diameter
      • Automatic transmission only
      • No air injection tubes included
      • Includes all mounting hardware and gaskets for installation
      • Made from mild steel material with 16 gauge tube wall thickness
      • Finished in high heat resistant ceramic coating
      • Mandrel bent tubing with 5/16 inch thick flanges and O-ring port seals ensuring leak-free operation
      • Fits 1968 to 1974 Chevy/GMC 2WD 1/2, 3/4 and 1-ton trucks, Blazer, Jimmy, 1973 to 1974 2WD Suburban, 1968 to 1974 1/2 and 3/4 ton 4WD trucks, and 1973 to 1974 4WD Blazer, Jimmy K5, and Suburban with 396-454 engines, automatic transmission only

      Description

      High-Performance Exhaust Solution. The Flowtech HDR CRMC 68-74 GM TRK 396-454 long tube header is designed to boost engine efficiency and power by optimizing exhaust flow. It enhances exhaust velocity while lowering underhood temperatures, improving overall engine performance for big block GM motors on classic trucks and SUVs. This header is ideal for those seeking improved throttle response and fuel economy in racing or performance applications.

      Construction and Appearance. Crafted from durable mild steel with precision mandrel bending technology, this header ensures smooth airflow throughout the exhaust path. It features a corrosion-resistant ceramic thermal coating that provides heat insulation and a sleek metallic silver finish. The 5/16-inch thick flanges and leakproof O-ring port seals further enhance performance and reliability.

      Installation. Installation is straightforward and requires no drilling, with all necessary mounting hardware and gaskets included for direct bolt-on fitment. This makes it accessible for DIY enthusiasts with moderate mechanical skills.

      Application. Specifically engineered to fit 1968 through 1974 Chevy and GMC models including 2WD and 4WD trucks ranging from 1/2 to 1-ton, Blazer, Jimmy, and Suburban variants equipped with 396-454 big block engines running automatic transmissions only.

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      4.3

      Reviews of Flowtech Classic Exhaust Products (42)

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