i just got an 85 z28 for my birthday with a TPI 305 and a 700r4. my boss at work has a 4 bolt main 350 out of a truck sitting on the floor at the shop and i am going to try and buy it off of him with the intention of building a 383. my goal is to pump out around 350-400 ponies out of it for now with plans of a couple of turbos later on. ive been doing alot of research on good combos for this engine, but im a completely lost on head/cam combos. i know i want forged pistons and possibly a forged crank, and i want it to be FI. can i use the factory TPI setup? this is going to be in a car that is mostly a street car that sees the strip every once in a while. so far this is what i have kind of came up with for this build.

rotating assembly
http://www.jegs.com/i/Eagle/356/B130...oductId=749647

maybe 1.6 rockers and a roller valve train? and im completely lost on the heads...

 

The factory TPI intake is not really capable to support a 383 engine properly with air.

If you plan on running turbos on your engine check out the Power Adder forum, there are a lot of good threads there about building turbocharged engines.