Long Tube Headers for 55-57 Chevy 265-400 SBC 1-3/4in Primary D353 rol 3L V8 1955 - 1957

3L V8 1955 - 1957 Chevrolet Suburban Base 265/4

1210" Jet size

6 L V6 2012 - 2017 Dodge Durango Special Service 220/3

1969-1972 Ford F-100 302 CID

Supports up to 650hp naturally aspirated or 575hp on boost with four 100 lb/hr injectors

Long Tube Headers for 55-57 Chevy 265-400 SBC 1-3/4in Primary D353 rol 3L V8 1955 - 1957Overview: 55 57 Chevy SBC Long Tube Silver Ctd Long tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market. Features: 3 8" Thick machined flanges to prevent warping Precision formed long transition collectors and long tube design reduces backpressure