AFR LSX 245 Mongoose Cylinder Heads - 73cc

AFR 245 LSX "Mongoose" Cylinder Heads - (73cc) Our "Max Effort" Cathedral Port Offering A tremendous amount of time and energy was invested to bring you our 245cc LS Gen III head what represents the pinnacle in cathedral design bolt on performance. With over 355 CFM available it has intake flow numbers approaching GM's famed, and much larger, LS7 head with much stronger exhaust flow in comparison. This head is AFR's take no prisoners LS cathedral port offering and its focus is large displacement combinations (408 - 454 CID) with a minimum bore size of 4.030". The dual quench pad 73cc combustion chamber design requires a head gasket bore diameter of 4.200" or larger. These heads comes standard equipped with lightweight 2.165" intake and 1.600" exhaust valves. Another unique feature of this head is that it is “solid roller friendly” having been designed and machined to accept larger .375" diameter push rods without additional clearancing (in most applications) and comes