Mast: LS3 LSA 255cc 4.000" Cylinder Heads [Camaro Corvette CTS V, LS3 LSA] Exhaust Valves:1.600" Solid Inconel - Solid Roller Note 2: The end of

Note 2:  The end of the supercharger shaft on the LSA application is not threaded like it is in other applications

There are three types of heat transfers that can occur

and insure it for the cost of a new replacement estimated $3

Looking to add a lot more downforce and an aggressive look to your 2009-15 CTS V

Mast: LS3 LSA 255cc 4.000" Cylinder Heads [Camaro Corvette CTS V, LS3 LSA] Exhaust Valves:1.600" Solid Inconel - Solid Roller Note 2: The end ofA head that truly has no competition. The Mast LSA 255cc head was designed for customers with medium bore LS engines that wanted to run LS3 intakes or LS3 LSA superchargers. This head is very capable when paired with the proper intake and displacement and has supported over 800hp on pump gas with a Whipple 2. 9L consistently. Heads come standard with PAC 1207X Double Springs for boosted applications; however, if you want the N A PAC 1204X Beehive