How to get 500rwhp from the LS3 YET...
What do you guys think? Will i be close with a custom ground sleeper cam? If so how close? 480?

Otherwise, a custom-ground sleeper cam will get you close, and a set of TSP's Ported LS3 heads should get you there solidly.
Good luck!

If you wanted to go crazy and spray a 100shot WITH the heads & cam, you certainly could - but make sure your first spray is on a dyno while your tuner is closely monitoring the Air/Fuel ratio. A fuel system upgrade will likely be in order.
www.motorsporttech.com
Thanks,
Zach
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