PRC L99 CNC Head Porting & TSP Camshaft Package (Customer-Supplied Castings)

Precision Race Components L99 Cylinder Heads Fully CNC Porting Service & Assembled With your choice of valves, valve springs, and custom milling based off your camshaft selection! Kit Also Includes TSP Hardened Pushrods & Your Choice Of Camshaft! You can upgrade your package with a GM heads/cam bolt and gasket kit that includes GM head gaskets, GM cylinder head bolts, timing cover gasket, water pump gaskets, front crankshaft seal, and balancer pulley bolt. When selecting your camshaft, please keep in mind that all TSP L99 camshafts are completely engine dyno developed & include the camshaft phaser tables for correct tuning! Our L99 TSP camshafts were all designed on our SuperFlow 902 engine dyno on a factory L99 engine. These camshafts are designed for maximum power on a stock L99 short-block without any piston-to-valve clearance issues. This kit requires the removal of the AFM lifters! By removing the AFM lifters when doing your heads/cam install we're able to uses TSP proprietary camshaft lobes that have proven to make over 13hp&tq gains compared to AFM friendly lifters! All of the camshafts listed in this package are our VVT cams, so they will require the removal of the factory AFM/DOD system. You can add our DOD delete kit in the drop-down menu below if you have not already purchased one. Also, if you supply the valve spring kit for installation on your cylinder heads, they will need to support at least .650" of total valve lift. If you do not have a valve spring kit, you can select one below. Kit Includes: Your Choice of TSP VVT L99 Camshaft Porting of Your Cylinder Heads Optional Choice of Valve Springs Hardened Pushrods Phaser Limiter Custom Phaser Tuning File New GM VVT Camshaft Bolt This packages can provide over 140+ flywheel horsepower gains! If you have any questions over what packages are best for your application please give us a call! *** COST BASED ON PORTING YOUR SUPPLIED HEAD CORES!