I was wondering if any one has purchase the SLP rocker arm package for a 2000 LS1 ss camaro and did it gain the horsepower it adverise

 

I've heard there good for 10-15 hp.

If you ever plan on installing a up-graded cam(even a small cam), stick with the stockers and get a LS6 intake instead with your money.

 

Thanks I do have a LS6 intake,headers,85 m mas air flow , 80 m throttle bodier

 

Thanks I do have a LS6 intake,headers,85 m mas air flow , 80 m throttle bodie SLP FLOWPAC COLD AIR PACKAGE,SLP DIABLE SPORT PROGRAM.

 

FYI, you're going to need to up-grade the valve springs too.
So, I'd also highly consider a TSP cam kit(pushrods,valve springs) ported oil pump, LS2 timing chain, cam bolt & gasket kit. This will only cost about $100 more than SLP 1.85 rocker kit and a set of PAC1218 valve springs.