What intake manifolds are available for the C5?
There are not many intakes available to fit the LSx series of engine, since the factory ones are quite good. Aside from the standard LS1 intake on the earlier (97-2000) cars, there is the factory LS6 intake, which is good for a few horsepower, mostly on modified cars. To install the LS6 intake on a later car, in addition to the intake gaskets, you will need (1) #88894339 LS6 Intake, (1) #12568478 Coolant Pipe, and (2) #12563325 Plugs. It usually runs around $400. A company called FAST is making what they call the “LSx” intake, which is now in testing. It is closer to $800, and is available in small and large throttle body sizes. It has shown decent gains over the LS6 intake. Lastly, TPIS makes a modified LS6 intake that uses an oval inlet, and an accompanying oval throttle body. dyno graphs have been posted showing the FAST LSx intake making a bit more power than this one, and for less money. Information is scarce, however, so do your homework. Holley makes an intake, but the LS6 has s
