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LSx  Valve Cover Spacers Corvette LS1, LS2, LS3, LS6, LS7  Product 16 of 116 in category Cylinder Heads  Vinci HP - LSx -  Extreme Duty Dual Valve Springs

VHP/Crane Roller Rocker Kits New Accelerated Lift

VHP/Crane Roller Rocker Kits New Accelerated Lift
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Kit contains rockers, studs, guide plates, lock nuts, pushrods Kit available in 1.7 and 1.8 ratio
avg increase 20rwhp-20fptq

VHP Works To Develop Products Like These! We Test Them On The DYNO
THEN WE TEST THEM ON THE DRAG STRIP!

VHP new ACCELERATED LIFT rocker arm geometry has opened the door to a new area of valve train development and cam lobe design that is producing impressive results.  The ACCELERATED LIFT? geometry is not magic; it is simply a new design of the rocker arm body that locates the pushrod seat low in the body with respect to the center of rotation about the shaft.  Because the pushrod seat area travels in an arc as the lifter/pushrod moves upward during the lift event, the pushrod seat moves slightly away from the center of rotation around the shaft.  This movement of the seat through its operating arc causes the effective rocker arm ratio to decrease.  The end effect is this:  a 1.6 ratio ACCELERATED LIFT? rocker arm actually starts opening the valve at a ratio of 1.7.  As the valve opens, the rocker ratio decreases to the 1.6 advertised ratio (this occurs at about .250? - .300? valve lift) and then maintains the 1.6 ratio through the rest of the lift cycle until it starts back on the seat.  It goes back on the seat at a 1.7 ratio. This new geometry provides increased airflow earlier in the lift cycle and maintains it longer into the closing event.  More flow equals more power!  There are additional benefits.  The ACCELERATED LIFT design applied to computer managed engines means that short seat-to-seat timing can be maintained to provide high vacuum at idle and low speed, but duration at .100?, .200? etc. is equal to camshafts having .050  durations 8 to 10 degrees bigger.  This means great power increases and ease of tuning the engine management system.  ACCELERATED LIFT? geometry is the future for pushrod engines and VHP  has it for you today!
      VHP has also designed new camshaft lobes to maximize the advantage of these rockers.  The new ACCELERATED LIFT? lobes are being used in all of our new racing profiles, as well as our new LS1 family of cams for GM cars and trucks. Performance enthusiasts have known for over 25 years that the best lobe design to maximize area under the lift curve? is the inverted flank roller lobe:?  However, the inverted flank design? creates several manufacturing headaches which cause the price of these designs to be quite high.  VHP'S  new ACCELERATED LIFT? Rocker body design and new complementary ACCELERATED LIFT? cam lobe designs have produced a valve lift profile that exceeds the power potential of the “inverted flankâ€? designs.  These new profiles are available on all of the latest LS1 cams, including the Truck Power? cams and many of the new racing cams.  Most of our future pushrod camshaft designs will incorporate the ACCELERATED LIFT technology.

 

This product was added to our catalog on Friday 06 March, 2009.
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LSx  Valve Cover Spacers Corvette LS1, LS2, LS3, LS6, LS7  Product 16 of 116 in category Cylinder Heads  Vinci HP - LSx -  Extreme Duty Dual Valve Springs
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C6 Performance is a Proud Member of SEMAProud Member of The National Corvette Museum

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