Thanks for all the replies.
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I'll outline the dilemma. I want to go faster, I thought I could do it with more cubes and the block and top end I'm using now. Plan was to buy another set of -13 heads (since then I can use all the other stuff I have) and get them cnc ported. But I was going to buy another set of heads anyway, Predators are out of the question I think they'll work out too expensive for me, and I think the same for the B1 TS.
Not sure about PSO's though, I've no experience.
Should I keep developing the 572 or go to 604.
Seems like the heads I have are holding me back
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Also can anyone tell me if headers that fit -13 will fit B1 MC's? (or PSO's)?
I don't want a Hi RPM race gas motor.
We've gone 6.1 @ 114 1/8th 9.57 @ 142 1/4 @ the weight in sig. I shift @ 6500 and motor goes to 6800 at the stripe.
4 figure HP would be nice since we think we're around 850hp given the times, MPH and weight (Cars been weighed on 4 scales now all within 40lb). Thanks again.
Cheers.
Tig
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