LS1 / LS2 / LS6 / LS3 / L92 / L99 LQ9 LQ4 LS4 VALVE-TRAIN PRODUCTS

LS SERIES SHAFT MOUNT ROLLER ROCKER ARMS

YELLA TERRA ULTRALITITE     <click to enlarge>

Late model engines utilizing lightweight valve train components and conical springs are susceptible to valve float when some performance camshafts are used.

Yella Terra  developed shaft and pedestal systems for these engines that have less than half the nose weight of other rocker designs. The result is greater RPM potential without sacrificing strength or reliability. Standard and high ratio options are available.

Recommended maximum spring pressure 425 lbs
 

PLATINUM RACE ROCKERS    <click to enlarge>

Designed for the most severe race applications Platinum rockers feature “wide body” arms for even greater strength and resistance to deflection. All platinum rockers feature heavy duty 7/16” mountings for unsurpassed rocker stability.

Recommended maximum spring pressure 500 lbs

YELLA TERRA ROCKERS ARE BILLET ALUMINUM - DESIGNED FOR DROP-IN INSTALLATION
COMPLETE WITH ALL NECESSARY HARDWARE - LIMITED LIFETIME WARRANTY
 

please indicate part number desired!
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VHP VALVE SPRING TOOLS!

DON'T SETTLE FOR POORLY DESIGNED COPIES - GET THE ORIGINAL!

"EFFORTLESSLY" CHANGE 2 VALVE SPRINGS "ON THE CAR" SIMULTANEOUSLY!

	THE ORIGINAL                  LS1 / LS2 / LS6 cyl heads CNC MACHINED! COMPLETE WITH DETAILED, ILLUSTRATED,  INSTRUCTIONS & QUALITY HARDWARE                   A MUST FOR EVERY TOOL BOX, EVEN CHANGES DUAL SPRINGS EASILY ON CORVETTES, SUV'S AND DIFFICULT TO REACH F-BODIES	RETAIL $139.99 WEB SPECIAL! LIMITED OFFER! PRICE $119.99 VHP ST LS1 (VIEW ITEM)
	NEW & EXCLUSIVE                 LS3 / L92 / L99 cyl heads CNC MACHINED! COMPLETE WITH DETAILED, ILLUSTRATED,  INSTRUCTIONS & QUALITY HARDWARE                    A MUST FOR EVERY TOOL BOX, EVEN CHANGES DUAL SPRINGS EASILY ON CORVETTES, SUV'S AND DIFFICULT TO REACH F-BODIES	RETAIL $139.99 WEB SPECIAL! LIMITED OFFER PRICE $119.99 VHP ST L92 (VIEW ITEM)

VHP VALVE SPRING KITS!  
TWICE THE SAFETY FACTOR OF FACTORY SPRINGS
 

	VHP  STREET / STRIP DUAL VALVE SPRING KIT HIGH TENSILE CHROME - SILICON STEEL INCLUDES SUPER LITE TOOL STEEL RETAINERS, SPRING LOCATORS, VITON SEALS . SPECIALLY DESIGNED FOR HEAVY DUTY LSX APPLICATIONS DROP-IN KIT, NO MACHINE WORK         SPECS: 150 lbs @ 1.800" 420 lbs @ 1.150"                                                                            will handle .650 lift with ample coil clearance	VHP TS SK PRICE $299.99 (VIEW ITEM)
	VHP   HD STREET / STRIP  DUAL VALVE SPRING KIT EXTRA HIGH TENSILE CHROME - SILICON STEEL INCLUDES TITANIUM RETAINERS, SPRING LOCATORS, VITON SEALS. SPECIALLY DESIGNED FOR EXTREME DUTY LSX APPLICATIONS OR HIGH LIFT ROCKERS DROP-IN KIT, NO MACHINE WORK     SPECS: 163 lbs @ 1.800"                                                          470 lbs @ 1.150" will handle .660 lift with ample coil clearance	VHP HD SK PRICE $359.99 (VIEW ITEM)
	VHP   ULTRA LIFT DUAL VALVE SPRING KIT EXTRA HIGH TENSILE CHROME - SILICON STEEL  INCLUDES TITANIUM RETAINERS, SPRING LOCATORS, VITON SEALS. SPECIALLY DESIGNED FOR LS7 / L92 & OTHER HIGH LIFT APPLICATIONS  1.800"                                                                                                                         467 lbs @ 1.150" will handle .725" lift with ample coil clearance	VHP UL SK PRICE $499.99E $499.99 (VIEW ITEM) (VIEW ITEM)
	VHP LS SERIES SUPER DUTY HARDENED VALVE LOCKS WORRY NO MORE ABOUT DROPPED VALVES FITS ALL FACTORY LS APPLICATIONS	LS SD VL PRICE $29.99 (VIEW ITEM)
	VHP NON-FLEXIBLE PUSHRODS!
	VHP CHROME MOLY PUSH RODS 5/16" (STANDARD DIA.) .080 WALL..  LIGHTER & STRONGER THE WEAK LINK IN THE LS1 & LS6 WE HAVE CUSTOM LENGTHS ALSO USE THESE WHEN ADDING HD VALVE SPRINGS	PRICE $149.99 SPECIFY LENGTH WHEN ORDERING (VIEW ITEM)
	VHP "EXTREME DUTY" CHROME MOLY PUSH RODS (3/8" DIA.) ZERO-FLEX DESIGN SPECIALLY DESIGNED FOR EXTREME DUTY LSX APPLICATIONS WITH HIGH LIFT ROCKERS MUST MACHINE HEAD FOR CLEARANCE A MUST FOR PREVENTING VALVE FLOAT WITH EXTREME SPRING PRESSURE AND LOBE LIFT. STOCK PUSH RODS LOOK LIKE A GUITAR STRINGS AT HIGH RPM. THEY FLEX AND BEND CAUSING VALVE FLOAT AND LIFTER PUMP UP. EVEN HEAVY WALL 5/16 PUSH RODS FLEX UNDER EXTREME LOAD.  THE STIFFER - THE BETTER!	PRICE $189.00 SPECIFY LENGTH WHEN ORDERING (VIEW ITEM)
	VHP / CRANE  HARDENED GUIDE PLATES for 3/8" PUSHRODS .080 WALL... STRONGER THAN 5/16" FOR EXTREME DUTY APPLICATIONS SET OF 8 FOR ROLLER ROCKER KITS (ABOVE)	CR GP 38 PRICE $66.99
	MORE VALVE TRAIN PRODUCTS!
	EDELBROCK  2-PC. ALUMINUM TIMING COVER MAKES CAM CHANGES AND PHASING A SNAP.	PRICE $229.99 (VIEW ITEM)
VHP HX TS	VHP HEX A JUST HEAVY DUTY ROLLER TIMING KIT ADVANCE & RETARD CAM EASILY & ACCURATELY WITH UNIQUE ALLEN KEY ACCESSIBLE CAM ADJUSTER	PRICE $149.99 (VIEW ITEM)
134-1002	ARP SUPER DUTY CAM RETAINER BOLTS	PRICE $15.99 (VIEW ITEM)
134-1003	ARP SUPER DUTY TIMING GEAR BOLT SET	PRICE $13.99 (VIEW ITEM)

VHP WORKS TO DEVELOP PRODUCTS
VHP DEVELOPS PERFORMANCE PRODUCTS DYNAMICALLY!
WE TEST THEM ON THE DYNO / THEN WE TEST THEM ON THE DRAG STRIP!
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VHP HAS DESIGNED SEVERAL NEW PROFILES, EACH WITH A SPECIFIC POWER PURPOSE.  OF COURSE, WE STILL BUILD THE CONVENTIONAL CAM PROFILES WE HAVE BUILT FOR 0VER 39 YEARS. CALL THE PROS AT VHP AND LET US HELP YOU TO CHOOSE THE RIGHT PROFILE FOR YOU.
 

  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 flank” 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.

< click here to view CAR camshaft spec page >
 

<click here to view SUV camshaft spec page >
 

< click here to view our NEW tech tips page. it contains a world of information about camshaft choice >