has anyone put tpi on a zz4, if so what kinda results did you have? Thanks

 

I and many other have done it. There have been many detailed posts about this topic in the past, just do a search on the board for ZZ4 and it will the answer for almost any question you may have about it. I don't have any track times but I can tell you it is fun to drive and well worth the effort. For a daily driver it is great but for weekend/track car I would get a ZZ shortblock and some AFR heads and a HOT cam. I will eventualy end up with both the ARF's and a HOT cam but for now I am going to see how I can do with the high flow LTR setup, 2800 stall converter, 4.10 gears and 75hp nitrous I have now.