4-V Heads vs. 2-V Heads

Guest

My question is I am getting ready to build my motor in my 74 Pantera. I have a set of 4-V quenched heads that I was going to install. However, I hesitate becuase so many people are talking about the 2-V Aussie Heads. Is there really a difference in performance between the two? If so, what kind of difference? I've heard the Aussie heads have a much better bottom end but runs out of power before 6000rpm? I have also heard the 4-V quenched does not lose any bottom power and pulls up to 7000rpm. I am looking for my motor to pull very strong to between 6000 and 6500 rpm but not lose much bottom end power. Any input would be welcomed. In addition, any thoughts on intake single or dual plane?

7/15/029:40 PM

Original Post

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