With the bolt-ons I currently have, what horsepower increase should I expect with a lt4 hotcam (.525 intake, .525 exhaust) w/ 1.6 rr?

 

you should pick up at least .30 in the 1/4 and will pull nicely.
so if you run 13.7 you should run 13.4 easy you can pick up more but i dont like to estimate an et due to diff drivers...

 

i just installed it on my car and i can promise you that I picked up more than 3 tenths, but i did get a really good p&p/3 angle valve job on my heads. I have not tuned it yet but i raced a friend of mine on the highway (95 Z28, A4, custom tune, 75 wet shot, CAI, built tranny, new motor, and a couple more things) and when we raced we started at about 65 and by 100 i had about two cars on him and just started pulling even harder above 100. My car weighs about 300 more lbs than his too! I couldnt belive the difference.