Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block. Round Ports, 2.15 Inch Exhaust Upgrades and Parts " This Causes Dreaded Thermal Runaway

This Causes Dreaded Thermal Runaway

75hp Street (transmission tune suggested)

Up the ante in performance with your Chevy Silverado and GMC Sierra 1500 truck by installing the BDS 4-inch lift kit suspension featuring FOX 2

5 Launch Rates

A common failure point on the Ford platform

Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block. Round Ports, 2.15 Inch Exhaust Upgrades and Parts " This Causes Dreaded Thermal RunawayManufactured from high temperature steel core graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp load. Can be