V-10 Killer

iTrader: (22)

I finally sold my current heads, and am in the market for some new ones for my LS2 402 project. But before I buy, I need to figure out which set of heads will work best with my current list of parts.
Here's what I have to work with:

• SDPC LS2 402, -14cc dished pistons (need ~59cc heads)
• FAST 90/90 setup, no MAF (open loop tuning)
• Kooks 1 7/8" headers
• Comp cams 242/250 .611"/.619" 114+2 LSA Cam (XER grind)
• Hellfire rings gapped for up to 200hp worth of Nitrous
• If it matters, it's with a TCI 3800 stall/A4/3.73 geared 12 bolt setup

I see that I can get any combustion chamber I want with ET Performance heads. But how do I determine the optimal intake runner volume for this setup. I know it works a lot of the time, but bigger isn't always better.
Given what I already have, the 245's work better, or should I limit myself to the 225's because of the cam duration?

Beast96Z

iTrader: (21)

The 245's will be fine. Espeacially on the spray. The problem in the larger port volumes is when th eporter is using a larger port to obtain a "bigger" flow number. This will cause the head to loose velocity and have a larger cross sectional area. It all adds up to a poor head. I don't think you'll have to worry about any of the above with the ET heads. If you sprayed a fair amount, you may even opt for the 255's.