Turbo LS Engine Cam Upgrade for Drag racing applications. 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._x000D_\nKelford Cams recommend PAC-1204X valve spring for most applications, but please contact us for our recommendation for high boost and high rpm applications._x000D_\n _x000D_\n
