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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
5.0 Coyote Valve Spring Upgrade: Brands, size, and price
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<blockquote data-quote="JP0814GT" data-source="post: 13884255" data-attributes="member: 157522"><p>Has any one tested the single coil Ferrea springs with fully functional VCT? Only curious due to their rates seem to be in the ball park of the Livernois & TFlow 1's Ferrea is typically good quality parts.</p><p>So on a Turbo car if your trying to keep full VCT is getting the highest spring rate possible without VCT being effected the goal? </p><p>I also seen Ferrea has a higher lbs rating dbl coil spring available other than the one spring listed here. Logically I can see where a very stiff high lbs springs could cause inconsistencies in Valve control when retaining full VCT and could require lock outs example trick flow 2's.</p><p></p><p><strong>Livernois</strong>= 70lbs to 190lbs </p><p></p><p><strong>Trick Flow 1</strong> = 80lbs to 180lbs </p><p></p><p><strong>Ferrea</strong> = 90lbs to 190lbs</p></blockquote><p></p>
[QUOTE="JP0814GT, post: 13884255, member: 157522"] Has any one tested the single coil Ferrea springs with fully functional VCT? Only curious due to their rates seem to be in the ball park of the Livernois & TFlow 1's Ferrea is typically good quality parts. So on a Turbo car if your trying to keep full VCT is getting the highest spring rate possible without VCT being effected the goal? I also seen Ferrea has a higher lbs rating dbl coil spring available other than the one spring listed here. Logically I can see where a very stiff high lbs springs could cause inconsistencies in Valve control when retaining full VCT and could require lock outs example trick flow 2's. [B]Livernois[/B]= 70lbs to 190lbs [B]Trick Flow 1[/B] = 80lbs to 180lbs [B]Ferrea[/B] = 90lbs to 190lbs [/QUOTE]
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2011-2014 Mustangs
Engine/Tuning
5.0 Coyote Valve Spring Upgrade: Brands, size, and price
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