2inch CPP blocks
 

I bought the CPP 2in drop blocks. I lowered the rear also with 4in springs. The blocks dont have the 4 degree slope. Should I have used the ones with the 4 degree slope?

Re: 2inch CPP blocks
 

That's a question you're going to have to answer yourself, honestly. I know 4" springs with 2" blocks is a common drop and many don't need any pinion adjustment. Then there are others that do (like my truck, needed 2 degrees). I'd say since you already have the blocks, just put them in and see how it feels. If there's no vibration, you are probably fine but it wouldn't hurt to just check your angles anyway.