Suits professionally built high HP turbo LS engines. Best in large cubic inch drag racing engine. Turbocharger sizing, 72-80mm single turbo, 54-58mm twin turbo. Kelford Cams recommend PAC-1204X valve spring for most applications, but please contact us for our recommendation for high boost and high rpm applications.
Strip|||Drag Race|||Roll Race|||Drift|||E85|||Methanol|||Blower
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