Trick Flow® GenX® 220 Aluminum Cylinder Heads

If you're looking for the best value in GM LSX performance, look no further than these Trick Flow® GenX® 220 aluminum cylinder heads with Fast As Cast runners. These GenX® 220 heads feature all of the same goodies that make our CNC-ported heads so incredible--13.5 degree valve angles, decreased valve shrouding, increased mid-lift airflow, relocated spark plugs, improved rocker arm to valve cover clearance, and a rigid casting design for extreme horsepower applications--but in a more affordable cast version that flows nearly as much air as the CNC-ported heads. The Trick Flow® GenX® 220 performance cylinder heads come with 220cc intake and 80cc exhaust Fast As Cast runners that duplicate the port shape and profile of fully CNC-ported runners. The result is near CNC-ported power and performance for the same price as ordinary cast cylinder heads. The combustion chambers are 64cc and valve sizes are 2.040 in. intake and 1.575 in. exhaust. Other features include bronze valve guides, ductile iron intake and exhaust valve seat inserts, 1.300 in. dual valve springs, Viton® fluoroelastomer canister-style valve seals, 7 degree machined steel valve locks, and 7 degree titanium retainers. Bare cylinder head castings are also available