Beehive Spring Conversion Kit

To gain greater high-rpm capability and valvetrain stability, convert the valvetrain on your aluminum Fast Burn heads to the beehive-type system used on Chevrolet Performance’s latest Fast Burn heads (Part Number 19417592) on the SP350, ZZ5, ZZ6, SP383 and ZZ383 crate engines, and on the CT400.

The springs, retainers and other hardware are direct replacements for the conventional springs and hardware, with no machining of the valve spring seat required. The engine’s existing intake and exhaust valves are retained, allowing installation without cylinder head removal if compressed air or another method is used to hold the valves closed. The engine’s existing rocker arms are also retained.