ive seen them heads and everytime i see the cost 4k new to do i laugh
the heads cost around 800$ new bare and flow around 290/210 stock according to the emial i have from rhs them selfs an the numbers hes saying with under cut valve stem valves and just a good valve job i have seen posted right around his numbers done on a 4.155 bore with exh pipe.
avg price for conversion is 400$
springs,retainers and locks are around 300-600$
them valves last i ever seen them where only around 200$ for set of 16 for that size.pretty much the same as manley race series valves..
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box of ls6 junk an some dope..i wish i new what i was doing
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