Need a cam for your big cubic inch forced induction engine?  This split duration (dual pattern) cam with its large .607"/.610" lift numbers is the perfect choice.  Also, a very good choice for big naturally aspirated race engines with 11.5:1 or higher compression.  This cam is for high rpm that works awesome with or without nitrous.    This is a billet cam with a flat nose for the 55-86 SBC, and a cast iron distributor gear and is ground on a 112deg. lobe separation.  Custom lobe separation angles are available upon request.  Please call to order.