Heads Question.
03-21-2011, 12:35 PM
#1
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Heads Question. Over the weekend I had a chance to visit one of our sponsered vendors and talked to them for a bit they told me since we have 243 head we have complete Z06 head wit sodium filled and hollow valves and yellow springs? As far as I knew they were regular valves and ls1 springs, nothing to special. Any body got any info on this?
03-21-2011, 12:47 PM
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This doesn't answer your question, and they don't show the RPO for the LS4 but thought you may get something out of it. 
http://www.carcraft.com/techarticles...ads/index.html
http://www.carcraft.com/techarticles...ads/index.html
03-21-2011, 02:23 PM
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If we already have LS6 spring why are people swaping to the yellow springs? Are the standard valve sodium filled & hollow or jus stainless steel? Thanks for the info yu guys
03-21-2011, 02:39 PM
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(or so, some say) I think the blues were used on LS1's too.
We just have the plain jane valves. Nothing fancy.
They are not sodium filled and they are not SS. Wishfull thinking.. lol