*SOLID* Roller Proline RPM Dual Valve Springs KIT fits 351C Cleveland & Chevy BBC 454. 550lbs/in, 250lbs@ 1.900" Installed Small OD.

DRP High RPM Polished Dual Valve Springs fits 351C Cleveland & BBC 454 for Solid Roller Cams.

Suits Aluminium Cylinder Heads for BBC 454 & 351 Cleveland 

Solid Roller Valve Springs, Proline Race/Endurance high performance series by PAC springs. 

These are the next level, polished, LS small OD style Solid Roller Dual Valve Springs kits. These light weight valve springs are the perfect upgrade to your 351 Cleveland or Big Block Chevy 454. These PAC Mechanical roller valve springs kits utilise a custom spec by DRP and combined with DRP hardware give you the best quality at the best price! The small yet powerful spring brings light weight valve train technology upgrade to the traditional Chevy & Cleveland cylinder heads. Achieve higher RPM with a more stable valvetrain.

Dual Valve Springs kit fits: Big Block Chevy 454 & 351 Cleveland.

Valve Spring Series: Proline RPM - Premium PAC endurace, Polished multi stage treatments.

Installed Height: 1.900"

Seat Load: 250 lbs@ 1.900"

Spring Rate:  550 lbs/inch

Coil Bind: 1.070"

Max Lift: .770" @ 060" safety. 

Valve Spring Finish: Polished - Bright.

Spring Retainers: 7 deg fits 11/32 stem  (included) - Optional Tool Steel Retainers

Spring Locators: fits .570" bronze guides (included)

Valve Locks: 7 deg - Race/machined  (included)

Valve Stem Seals: Viton - steel jacket small OD. (included)

Made in USA