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how to 4valve a s197
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<blockquote data-quote="Thump_rrr" data-source="post: 6898807" data-attributes="member: 36572"><p>IMHO it is not that the 3V heads flow better but that the 3v has VCT which enables the timing to vary with the rpm's.</p><p>It has been proven that when the VCT is turned off there is a loss of around 40 rwhp on a car running around 12psi of boost.</p><p>There are many people using VCT lockouts or limiters since there have been some cam phazer failures with stiffer valve springs and higher lift cams while others don't.</p><p><a href="http://www.livernoismotorsports.com/product.phtml?p=1701" target="_blank">http://www.livernoismotorsports.com/product.phtml?p=1701</a></p></blockquote><p></p>
[QUOTE="Thump_rrr, post: 6898807, member: 36572"] IMHO it is not that the 3V heads flow better but that the 3v has VCT which enables the timing to vary with the rpm's. It has been proven that when the VCT is turned off there is a loss of around 40 rwhp on a car running around 12psi of boost. There are many people using VCT lockouts or limiters since there have been some cam phazer failures with stiffer valve springs and higher lift cams while others don't. [URL="http://www.livernoismotorsports.com/product.phtml?p=1701"]http://www.livernoismotorsports.com/product.phtml?p=1701[/URL] [/QUOTE]
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