JBA 88-93 GM Truck 7.4L BBC w/o A.I.R. 1-3/4in Primary Silver Ctd Cat4Ward Header

If you're looking to get more out of your 1988-1993 Chevrolet C3500, especially one with the 7.4L Big Block engine and without the A.I.R. system, these JBA Cat4Ward headers are a solid upgrade over the stock exhaust manifolds. They're designed to flow much better than factory parts, which can lead to noticeable gains in power and efficiency. This means your truck will feel more responsive, whether you're towing, hauling, or just driving around town.

JBA builds these headers from durable stainless steel tubing, so they're made to handle the rigors of daily driving and heavier use. The 1-3/4 inch primary tubes are a good size for the 7.4L engine, and they connect to a proprietary Firecone collector. This design is based on race-proven technology and is intended to maximize torque and power gains in the RPM range you'll use most often. The flanges are a stout 3/8 inch thick with oversized ports to ensure a good seal and smooth flow into the tubes. They also come with factory-style emission connections, so you can retain your emissions equipment, and include high-quality hardware for a straightforward installation that aims for a leak-free seal.

When installing these, pay close attention to the included hardware and manufacturer instructions to ensure a proper, leak-free connection. The stainless steel construction means these are built to last, resisting corrosion and heat over time.