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how much are 243 z06 heads worth?? please help

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Old 01-25-2006, 11:59 AM
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Default how much are 243 z06 heads worth?? please help

what are they worth new with yellow springs and how much lift can the yellow springs handle? would these be good set of heads? any hp improvement?
Old 01-25-2006, 12:06 PM
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The springs will comfortably handle 0.550 to 0.555 lift, but i would not chance anymore. Well considering that TSP fully CNC 243's are around 900 a pair....i would say 500-600 bucks at most.
Old 01-25-2006, 12:08 PM
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Originally Posted by 02blkws6vert
what are they worth new with yellow springs and how much lift can the yellow springs handle? would these be good set of heads? any hp improvement?
Up to you, but I would never install aset of used heads without having them gone through (valves checked, cleaned up, etc). and springs replaced...cheap insurance. However, it does add afew bucks to the cost.
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Old 01-25-2006, 12:33 PM
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Originally Posted by 02blkws6vert
what are they worth new with yellow springs and how much lift can the yellow springs handle? would these be good set of heads? any hp improvement?
$850 for the new PRC ported LS6 heads. The yellow springs are good for ~.560. The new PRC's are supposed to flow better than the stage 2.5 5.3l heads.




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