I just bought a built Ls head!
- ported, polished and port matched.
- Crower 403 cams and valve train with new stock size valves
- Skunk2 intake manifold
- Blox 65mm throttle body
- STR fuel rail and fuel pressure regulator
- 440cc injectors
- I still have to get adjustable cam gears.

It will be going on a recently rebuilt '99 Ls block that is completely stock.
I have a 4-2-1 header, hi flo cat, and full 2.25" exhaust.

I have 3 questions...
1. Will my fresh, but stock bottom end be reliable with this head and a good tune?
2. What else, besides forced induction, would you recommend that I do next to get even more out of this set up.
3. How many HP do you think I'll get out of this head?

 

if you're gonna stay n/a, you're gonna have to get higher compression.