and Performance Parts and Accessories
8309 - 1958-64 Impala / Full Size Chevrolet 348, 409 Doug'S Ceramic Coated Tri-Y Design Headers
These Tri-Y design headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy.
Every header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses for dramatic gains in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are checked and rechecked numerous times during the design and manufacturing process. …
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