Seller notes

Big Block Exhaust Manifold Heat Riser Spacer (Eliminator) and donut and gasket for various 66-80 Chevrolet models Camaro Chevelle Nova Corvette Monte Carlo El Camino etc. Check at your end that this is the right size and hole spacing to go with the exhaust manifolds that you are using. This is a spacer, or heat riser eliminator, not a functioning heat riser. For 396 402 427 454 We have heat risers on another listing. ID 2.5" Installs on the RH sideHole spacing 3" or slightly more center to cente...

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