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Old 02-20-2013, 08:58 PM   #13
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i dont get why anyone cant see what he wants... he wants higher rpms, since the zx2 and zx3 heads perform the same, if he wants higher rpms, just swap out the valve springs from a zx2 into a zx3, then get a tune to change the rev limiter,

i'm basing my solution on what everyone's said here, im not sure if the zx2 engine does rev higher than a zx3 one, but valve float is solved by better springs at higher rpms...
tom's advice is best if you're aiming for hp.
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