I just had a cam installed in my 2009 LS3 M6 coupe. Shelby American Motorsports (part of the Carroll Shelby organization) in Las Vegas did the install. Requirements for the cam were: great street manners, quiet valve train, Comp Cams 918 valve springs, slight lope and a nice increase in power. Gil, the expert shop boss, provided me with the following Comp Cams ground cam: 224 (XFI) .610 intake, 230 (XE High Lift) .572 exhaust on a 113 LSA. Stock with a Dynojet tune resulted in 393 HP and 390 TQ. After installing the cam and a complete Z06 exhaust system with another tune (same Dyno) resulted in an increase to 440 HP and 412 TQ. The car has great street manners for daily driving to work on the streets of Vegas. Plus the increase in power is very noticeable. Great service with very knowledgable technicians at Shelby American Motorsports.


http://www.vegasvettes.com/Events/20.../1101Dyno.html

 

Do you have intake or headers?

 

Stock intake. No headers, just the complete LS7 Z06 exhaust system from the manifolds to the mufflers. Just guessing, I figure the exhaust is probably worth 10 to 15 HP and the rest goes to the cam.

 

A Dyno comparing the before and after results of thecam change.

 

Treat yourself to an intake or pop the shroud for some more cold air and port your intake manifold and you'll be even happier...enjoy!

 

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Sorry