To install a camshaft on a 350 engine, first, remove the intake manifold and valve covers to access the engine's internals. Ensure the engine is at top dead center (TDC) on the compression stroke for proper alignment. Carefully remove the old camshaft, clean the cam bearings, and install the new camshaft, ensuring it is correctly aligned with the timing marks. Finally, reassemble the engine by reinstalling the valve covers and intake manifold, and adjust the valve lash if necessary.
The 2011 Lexus IS-350 has double overhead cam (DOHC).
The 2008 Lexus IS-350 has double overhead cam (DOHC).
The 2009 Lexus IS-350 has double overhead cam (DOHC).
The 2013 Lexus IS-350 has double overhead cam (DOHC).
The 2012 Lexus IS-350 has double overhead cam (DOHC).
The 2007 Lexus IS-350 has double overhead cam (DOHC).
The 2010 Lexus IS-350 has double overhead cam (DOHC).
The 2006 Lexus IS-350 has double overhead cam (DOHC).
The 2014 Lexus IS-350 has double overhead cam (DOHC).
You don't have to change the cam, but a cam that is perfect for a 350 may not be perfect for a 383. Cam manufacturers offer technical assistance to help you select the right cam for your application.
No it is not. The 94 cam is not a roller cam. The 97 is a roller cam. Big difference.
The 2013 Lexus GS-350 has double overhead cam (DOHC).