Description
Chevy 396 onwards Big Block Chevy valve cover spacers in 6mm or 1/4 inch, these are cut from billet aluminum plate on a CNC machine and should be used with a gasket in between for better sealing. they will give extra height inside your valve covers when fitting roller rockers or taller valve train hardware. Valve cover spacers to suit Chevrolet big block engines 396, 402,427,454 engines