1964-78 Chevrolet, GMC Exhaust Manifold Heat Riser Valve; Small Block; Car & Truck
Reproduction exhaust manifold heat riser valve for various 1964-78 General Motors passenger cars and truck models as listed below. The heat riser valve is located between the exhaust manifold and the head pipe and is used to...
1957-79 V8 Small Block Exhaust Manifold Heat Riser, Without Valve
Stock replacement heat riser valves are available as well as "blank" plates for improved flow. {specs} Note: Images are shown from the bottom (pipe) side.