tony knight in SA has a CNC progam for 99 onwards heads and finishs by hand
kelford 272 cams, 1mm larger valves,
tony rebuilt the heads
shims are part of the bucket, no loosing a shim at high rpm
i didn't get them flow tested, as this has been done before.
iam making 630hp and me mate with same heads is making 750hp with even more tap if required. if chasing power use large pipe headers, port match all intake and exhuast
Ron
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