Ls1 N2O plate on newer truck

[ff_jeff]

I found out the hard way that the 2 are different. The Truck has a hole on the top left if your looking at the butterfly. That's the oil breather. Ls1 Plates will block this off, causing the vacuum to be blocked. This will cause problems. There is a hose running from the inside, close to the intake manifold, of the passenger side valve cover. It connects to the intake manifold, just before the throttle body. here is a picture.
You ll need to go to a parts store Like o'reilly's, and get an oil breather filter, and a plastic 3/8 elbow with a band clamp.
Remove the hose from both sides, off intake manifold, and the valve cover. Take a pair of scissors and cut the hose at the end to make it an L shape. Then put the plastic elbow inside the L shape you just cut. Put the breather filter on the other side of the elbow. The whole thing should look like an S kinda. Put the opposite side of the hose on the 3/8 tube coming off the valve cover and tighten the clamp. Cap off the other 3/8 barb on the intake manifold. The idea is to allow the new breather filter to come off the valve cover, go up and then twards the front of the truck. Looks good, functions well, and no need to machine the Ls1 Nitrous plate to fit. EDIT: A check valve also would be good.
Here are some pictures.... I like how it all hides under My cover now... Looks clean with cover off too.