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Username Post: 2016 3.6 VVT engine - better than previous years?
1983G20Van 
Super Senior Member
Posts: 3791

Loc: Bedford, Texas, USA
Reg: 11-13-02
10-14-17 07:43 AM - Post#2710827    
    In response to Shepherd

  • Shepherd Said:
For what is worth my 2015 Malibu is quiet even with the hood open. More of an issue is deposit build up on the intake valves as they are no longer exposed to fuel flow.



That is no joke either! I pulled the intake manifold on my 2011 M56S at 90K and cleaned the intake valves and ports using crushed walnut media blasting and B12 carb cleaner. Difference was night and day. I had tried two chemical cleaners through the PCV ports before I ended up pulling the intake. It cleaned the intake ports on the front 4 cylinders and deposited all that gunk directly on top of the intake valves as a messy gooey gummy deposit.
1983 G20 Van, 350 TPI, Ported 906 Vortecs, Edelbrock 3817 Base, ASM oversize runners. Reed Custom Roller cam, 700r4, 12 bolt with 3.08 gears, Doug Thorley Tri-Y headers, true duals

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