How necessary are dual valve springs on 12 psi ls6 heads
11-13-2007, 12:03 AM
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How necessary are dual valve springs on 12 psi ls6 heads How necessary are dual valve springs for a yellow spring ls6 head engine? I'll run up to 12 psi on 9:0-1 comp. Replacing the pushrods for sure.
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11-13-2007, 12:18 AM
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for the extra $120 for the dual spring setup that will take a beating and keep a valve from dropping/floating and destroying your heads and engine i say get them
11-13-2007, 12:21 AM
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I would still upgrade.. It's cheap insurance like Avengeance said... You'll really be kicking yourself with you float a valve and have to replace a piston... I believe a 918 spring has more seat pressure than the ls6 spring and I still don't think I would run them... These are just my belief... I know KP said that he ran a single spring (don't remember which) and he ran it into the 10's... I won't try it because Kevin has the luck of a person that wins consecutive lotteries... He's been very fortunate with his setups...
11-13-2007, 12:26 AM
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I just assumed I had to use them but have read many people and several kits don't have/include them. I think I'll grab a set.
Where are they $120. All I've seen have been in the $200 range.
Where are they $120. All I've seen have been in the $200 range.
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11-13-2007, 08:38 AM
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Once that boost gets into the chamber, it pushes against the valve, so you need a stronger spring to counteract it. There is a formula you can do to figure what your seat pressure is with XX boost.
