MACE
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All that and no high ratio rockers or manifold spacers?
Impressive!
I agree. The times would definitely have been better with a set of 1.9:1 ratio rockers. We've noticed with our rockers a genuine gain of around 12rwkw on a mainline from a bolt on LS1.
Sadly it's not possible to fit any manifold spacers to these engines unless you're planning on cutting up the base of the manifold and spacing it out. Not a bad thing, just not practical for many
Also LSx nats coming up should be good this year
http://australiancarscene.com/australian-lsx-shootout-2011-15th16th-april-2011/