I am thinking of building an NA motor from a 6.0 LQ4 using LS6 heads to bump the compression up a point. I know I will have to run premium fuel and have a good tune to keep detonation down. I plan on running an aggresive cam, not sure which one yet, ASM long tubes, magnaflow exhuast..so basicly all bolt ons. What type of numbers do you all think this setup would put down, I am guessing 375 hp / 400 Tq to the ground. I am searching for some LS6 heads, and how do I tell them apart because I have seen them listed as LS1,2, and 6...and its hard to tell on ebay, are they the ones with the D shaped intake ports with # 243?

Thanks in advance

 

well probably around 375 to 380 hp it all depends on the cam but in a rcsb with a good tune,4.10 mid to low 12.s