[werewolf89]

i'm building a 4 bolt main 350 for my nova and wanna push around 400hp would like to no a good set of heads to start with. if u wanna take it one step further and include specs for a good cam ie. lift / duration that would be very helpful.

[techinspector1]

Here is a list of over 100 small block builds that were dyno'd. Choose one that you like....
http://www.ryanscarpage.50megs.com/combos1.html

[75gmck25]

http://www.ryanscarpage.50megs.com/combos1.html

There are several choices for aluminum heads, but GM Vortec iron heads are usually one of the less expensive choices. If you take a look at combos 73, 78, 89, 99, 108, and 109, they all use Vortec heads and make decent HP. The last three of these combos exceed 400 HP, which seems to be what you want.

I'd also plan to use a hydraulic roller cam if possible, since you will need a fairly aggressive cam to get into the 400 HP range.


Bruce