Fit a roller rocker kit or a taller valve spring to a Big Block Chevy and the stock covers stop clearing. These are cast tall so the valvetrain has room, and the heavy gasket rail gives the gasket something rigid to seal against instead of a thin flange that bends every time you tighten a bolt.

Mr. Gasket 6859G Cast Aluminum Tall Valve Covers Features:

• Fits 1965-2000 Chevrolet 396-454 Big Block Chevy engines.
• Top quality die cast aluminum construction for an excellent fit.
• Tall height gives additional rocker arm clearance.
• Thick gasket rail area for excellent sealing.
• Pre-punched breather openings with baffles.
• Finned design with a polished high gloss finish.
• Mounting hardware included.
• Sold as a pair.