COMPATIBLE: (LS SERIES SWAPS)

1923-1954 Cars/Trucks/Cadillac

1958-1964 Impala/Biscayne

1950-1964 Bel Air

1953-1967 Corvette

1955-1961 Nomad

For LS series engine swaps only" These do not work on standard SBC or BBC

Surface: Mirror Polish Model: EH28087 Primary Tube Diameter: 1 5/8(41.3mm) Collector Attachment: 3-bolt flange Collector Diameter: 2.5 (63.5mm) Primary Tube Gauge: 16 Gauge Flange Thickness: 3/8 (9.5mm) 

The structural differences between exhaust headers and manifolds are the material and size. From the material, exhaust headers are made of lighter, thinner steel, while exhaust manifolds are made of thick iron. Exhaust headers are also longer than exhaust manifolds. When in use, exhaust manifolds create back pressure, which lowers performance. Because each cylinder of the engine is given its own tube, however, headers eliminate this problem; thus, allowing the gases to exit without the creation of back pressure. Therefore, exhaust headers are a BETTER choice than an exhaust manifold.