TRUCK & SUV CAMSHAFT SPEC PAGE

 

nine second truck ts

 

Nine Second D.D. Truck Video
<CLICK HERE>

CONGRATULATIONS!

ELIAS CEBREROS 2006 SILVERADO 4X4 DAILY DRIVER
VINCI CUSTOM CAMSHAFT & MATCHING VALVETRAIN
DYNOED AN INCREDIBLE 1199 RWHP

LET VINCI CAMS POWER YOUR Daily Driver
www.vincicams.com

WHEN IN DOUBT - EMAIL US FOR FASTER SERVICE
please include the basic vehicle information below!

altitude your vehicle operates in, year, model, engine RPO#, std or hd, 2wd or 4x4, tire dia, diff ratio, eng size, if 6.0-lq4 or lq9, cath port or rec pt, cyl head casting number, dod, afm, or vvt, current mods & later mods, main goals for truck, increased power down low, midrange, top end, type of idle- smooth, some chop, real choppy?
 

WE ARE EXPERIENCING AN UNUSUALLY HIGH NUMBER OF CAM ORDERS FOR THIS TIME OF YEAR. THE BEST WAY TO GET A QUICK RESPONSE TO YOUR INQUIRIES IS TO EMAIL  US. INQUIRIES WILL BE ANSWERED IN THE ORDER THEY ARE RECEIVED ON THE EVENING THEY ARE SENT IN.


sales@vincihighperformance.com

"please include your phone number"

 

PLEASE NOTE: OUR "LS SERIES CAMS" WILL NOT FIT THE 2014 AND LATER "LT" ECOTECH3 ENGINES - EQUIPPED WITH DIRECT INJECTION!

EcoTec3 engines feature direct injection, cylinder deactivation and continuously variable valve timing.

OUR LS CAMSHAFTS ARE DESIGNED FOR LS ENGINES 1997 THROUGH 2020


 

"VINCI CAMS" SET THE MARK IN LS SERIES CAMSHAFT DESIGN SINCE THE ENGINE WAS INTRODUCED!

OUR CAMS ARE ALWAYS MADE FRESH FROM 5150 or 8620 AMERICAN STEEL CORE / HARDENED IN THE USA, WHEN THE ORDER IS TAKEN. NO SHELF CAMS!
 OUR CAMS ARE RIFLE DRILLED AND CNC MACHINED FOR ABSOLUTE PERFECTION
FOR THIS REASON THERE ARE NO CANCELLATIONS OR RETURNS ON CAMSHAFTS ONCE PAYMENT HAS BEEN TAKEN, EXCEPT IN AN UNLIKELY EVENT OF A WARRANTY ISSUE!

BEWARE! many competitors are using CHEAP, INFERIOR imported austempered cast metal!
 

THE CAMS LISTED BELOW ARE BUT A FEW OF THE HUNDREDS OF GRINDS WE OFFER. IF YOU HAVE A SPECIAL CIRCUMSTANCE THAT YOU FEEL NEEDS A CUSTOM GRIND, CONTACT ROGER.


VHP CAMS > MOST VERSATILE  LOBE PROFILE RAMP SPEEDS > IN THE INDUSTRY!
OUR LOBE ACCELERATION PROFILES ARE THE SECRET TO VINCI CAMS
NO ONE ELSE IN THE INDUSTRY CAN DUPLICATE OUR LOBE PROFILES

VHP MT "MAX TORQUE RAMP" / CAMSHAFTS
DESIGNED TO PRODUCE THE MOST TORQUE UNDER THE CURVE
BEST FOR TOWING / ROCK CRAWLING / OFF ROAD & TRAIL USE

VHP
RR "RAPID RAMP" / CAMSHAFTS
DESIGNED TO ALLOW THE USE OF LARGER CAMS WITHOUT LOSS OF DRIVABILITY
 

 VHP UR "ULTRA RAMP" / ACCELERATED LIFT  CAMSHAFTS
THE FASTEST RAMPS IN THE INDUSTRY - MAXIMIZED PERFORMANCE - SERIOUS PERFORMANCE OR RACE APPLICATIONS
 

ANY DESIRED CUSTOM GRIND CAN BE BUILT ON ANY RAMP PROFILE TO ALTER LIFTER SPEED.
WE CAN MAKE ANY CAM MILDER OR WILDER!


< 1997 & LATER LS 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, L92, LS3, LS7, LSX, NON D. I. SERIES ENGINES >

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 LARGER. THIS MEANS GREAT POWER INCREASES AND EASE OF TUNING THE ENGINE MANAGEMENT SYSTEM.
VHP HAS DESIGNED SEVERAL NEW PROFILES, EACH WITH A SPECIFIC POWER PURPOSE.  OF COURSE,
 WE DO NOT PUBLISH OUR LOBE PROFILE RAMP SPEEDS. THESE SPECIAL PROFILES ARE THE SECRET BEHIND OUR CAMSHAFTS SUPERIOR PERFORMANCE GAINS.

TRUCK TECH TIPS FROM "THE LEGEND"

        Do you know when to go "wild" and when to go mild?  Well if you are driving a truck that is really an important decision.  Why? Because setting up your truck for how you regularly drive it, is really the "map" for your success!  From a daily driver, tow rig,  puller, rock climber, or actual drag racing rig, your strategic plan for use will give you the right recipe for maximum performance.
While "race only" trucks will opt for max lift and duration with tighter LSA's, we recommend that you build for maximum performance for your particular needs. EFI /MAF equipped engines in today's trucks require a different mindset than what Dad's truck demanded. Today's trucks are equipped with many options that require VERY HIGH VACUUM production. We build our "STREET" cams with this in mind. The delicate combination of duration, overlap, LCA, and LSA combined with the lobe acceleration profiles make VINCI camshafts the leader in the performance truck market. No other cam manufacturer can compete with our Truck Specific Grinds!

Trucks are beefy and weighty and maximizing the torque will get it up and going quicker so that your zero to sixty mph elapsed time is quicker even when more heavily loaded or towing.  Be careful in selecting larger carburetion or intake manifolds, high flow fuel injection, or headers, etc.  Remember that max torque comes from maximum airflow velocity not volume!  Our advice is, unless you are an all out racer, keep it "mild" and don't go quite so "wild." 
 

note! all VHP camshafts are for 3 bolt applications. Many LS engines built after 2007 are equipped with DOD, AFM, or VVT, and use single bolt camshafts. A 3 bolt camshaft timing gear must be purchased to use our cams. In some cases dod, afm, or vvt delete kits will also need to be purchased.


ALL OF OUR .550 LIFT CAMS WILL FIT WITH STOCK PISTONS WITH OUR 1.8 ROCKERS



<LS3 / LS7 RECTANGULAR PORT CAMSHAFTS - LISTED BELOW CATH PORT CAMS>
PLEASE SCROLL DOWN

 



"MAX PERFORMANCE CAMS"
for

CATHEDRAL PORT HEADS

1997 thru 2022 LS engines

 towing / off-road /street n strip / mud pulls / sand drags / rock climbing / conversions

camshaft questions: email us
sales@vincihighperformance.com


 CATHEDRAL PORT CAMS
these are but a few of our most popular grinds!
We have over 600 tried and true CNC BUILT LS Series cam possibilities in our files.

 

THESE ARE SOME OF OUR MOST POPULAR & PERFORMANCE PROVEN CAMSHAFTS!

IF YOU DON'T SEE WHAT YOU ARE LOOKING FOR, PLEASE EMAIL US AT

sales@vincihighperformance.com
 

FYI

 WE DO NOT PUBLISH OUR LOBE PROFILE RAMP SPEEDS. THESE SPECIAL PROFILES ARE THE SECRET BEHIND OUR CAMSHAFTS SUPERIOR PERFORMANCE GAINS.

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 LARGER. THIS MEANS GREAT POWER INCREASES AND EASE OF TUNING THE ENGINE MANAGEMENT SYSTEM.
VHP HAS DESIGNED SEVERAL NEW PROFILES, EACH WITH A SPECIFIC POWER PURPOSE. 


 

PLEASE NOTE!

WE ARE IN THE PROCESS OF UPDATING OUR WEBSITE!
WE APOLOGIZE FOR YOUR INCONVENIENCE!
 

ALL FULL CAMSHAFT ORDERS INCLUDE:
YOUR CAM CHOICE, LIFTERS, LIFTER TRAYS, DUAL VALVE SPRING KIT, & CHROME MOLY PUSHRODS.

ALL CAM KITS ARE ON SALE FOR $1099.00  PLUS UPS FEES       
 

TO ORDER A FULL CAM KIT,
PLEASE PLACE THE CAM KIT NUMBER YOU WISH TO ORDER IN THE CART!   

$1099.99

 

TO ORDER A CAMSHAFT "ONLY"
PLEASE  PLACE THE PREFERRED "CAM" NUMBER IN THE CART

$445.99
 

SPECIALTY CUSTOM CAMS

$465.99

 

FOR PUSHROD LENGTH AND OTHER QUESTIONS,
EMAIL:
sales@vincihighperformance.com
 

 

 

IMPROVED ECONOMY CAMS

MT
MAX TORQUE
RAMPS


5-065



DUR @ .050" 200*/ 208*
LIFT .502 / .502
LSA 115*
1A
"STAGE 1 ECONOMY"
POWER  RANGE 1400 TO 5500
GREAT FOR 4.8L &  5.3L IN VERY HEAVY TRUCKS
HIGH ALTITUDE APPLICATIONS
(this cam is A bit  small for 6.0L engines)

SMOOTH IDLE
UPGRADED VALVE SPRING KIT  REQUIRED


LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


HI-TENSILE  "SINGLE BEEHIVE" SPRING SET
SPECIALLY DESIGNED FOR
STREET  LS APPLICATIONS



CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS


 

 
MT

 

571

 

DUR @ .050" 205*/ 213*
LIFT .527 / .535
LSA 114*
3A

 

 

 

 

 

"STAGE 2 ECONOMY"
POWER  RANGE 1500 TO 5700
GREAT FOR 4.8L, 5.3L & 6.0L IN VERY HEAVY TRUCKS, VANS, MOTOR HOMES
HIGH ALTITUDE APPLICATIONS
SMOOTH IDLE / GREAT ECONOMY
UPGRADED VALVE SPRING KIT  REQUIRED



LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


HI-TENSILE  "SINGLE BEEHIVE" SPRING SET
SPECIALLY DESIGNED FOR
STREET  LS APPLICATIONS




CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS



 

 

 

 

IMPROVED DAILY DRIVING PERFORMANCE CAMS

MT


5-464
 

 



DUR @ .050" 208*/ 216*
LIFT .530 / .530
LSA 116*
5A

 

STAGE 1 PERFORMANCE
POWER  RANGE 1200 TO 5500
 SMOOTH LINEAR PERFORMANCE
GREAT FOR 4.8L & 5.3L IN SPORT & 4X4 TRUCKS

NOTICEABLE  QUIET IDLE
UPGRADED VALVE SPRING KIT  REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE



 

HI-TENSILE 
"SINGLE BEEHIVE" SPRING SET
SPECIALLY DESIGNED FOR
STREET  LS APPLICATIONS


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS


 

MT

 

572

 

DUR @ .050" 208*/ 216*
LIFT .570 / .578
LSA 116*
4A

 

STAGE 1 "HL" PERFORMANCE
POWER  RANGE 1300 TO 6000
 SMOOTH LINEAR PERFORMANCE
GREAT FOR 4.8L & 5.3L IN SPORT & 4X4 TRUCKS
LS SWAPS IN CARS
GREAT FOR HIGHER ALTITUDE VEHICLES

NOTICEABLE  IDLE
UPGRADED VALVE SPRING KIT  REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE





DUAL VALVE SPRING KIT REQUIRED

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 


 

 
MT

 

557



DUR @ .050" 208*/ 216*
LIFT .530 / .530
LSA 115*
5A

 

STAGE 2 PERFORMANCE
POWER  RANGE 1500 TO 5500
 HIGH TORQUE GAINS WITHOUT LOW END LOSS
GREAT FOR  ROCK CRAWLERS & OFF ROAD USE
 FOR  4.8L, 5.3L & 6.0L IN SPORT TRUCKS / 4X4 2500 HD TRUCKS HIGHER ALTITUDES / TOWING
NOTICEABLE  IDLE
UPGRADED VALVE SPRING KIT  REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE



 

HI-TENSILE  "SINGLE BEEHIVE" SPRING SET
SPECIALLY DESIGNED FOR
STREET  LS APPLICATIONS


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS



 

 

MT


554
 

 



DUR @ .050" 208*/ 216*
LIFT .570 / .578
LSA 115*
5A

 

STAGE 2 "HL" PERFORMANCE
POWER  RANGE 1400 TO 5800
 EXTENDED POWER GAINS
GREAT FOR  ROCK CRAWLERS & OFF ROAD USE
 FOR  4.8L, 5.3L & 6.0L IN SPORT TRUCKS / 4X4 2500 HD TRUCKS HIGHER ALTITUDES / TOWING / EXTENDED RPM RANGE
NOTICEABLE  IDLE

UPGRADED VALVE SPRINGS REQUIRED
 

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE
 



DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 

 

 

 

IMPROVED PERFORMANCE TOWING CAMS

MT


553
 



DUR @ .050" 208*/ 216*
LIFT .530 / .530
LSA 113*
5A
STAGE 1 TOWING
POWER  RANGE 1700 TO 6200
 HIGH HP & TORQUE GAINS
GREAT FOR 4.8L, 5.3L, 5.7L, 6.0L  IN SPORT & 4X4 TRUCKS & JEEP CONVERSIONS

MODERATE CHOPPY IDLE
UPGRADED VALVE SPRING KIT & PUSHRODS REQUIRED
EXCELLENT OFF ROAD CAM SMALLER CID

GREAT FOR WOODS & HUNTING VEHICLES, ROCK CRAWLING & TOWING

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 


DUAL VALVE SPRING KIT SUGGESTED
 

 


CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS



 

 
MT

 

556



DUR @ .050" 208*/ 216*
LIFT .578 / .578
LSA 113*
5A

 

STAGE 1 "HL" TOWING & PERFORMANCE
HIGHER LIFT VERSION
POWER  RANGE 1800 TO 6200
 EXTENDED HP & TORQUE GAINS
GREAT FOR 4.8L THRU 6.0L  IN SPORT & 4X4 TRUCKS & JEEP CONVERSIONS

MODERATE CHOPPY IDLE
POWER GAINS UP TO 65HP/FT-LBS TORQUE
UPGRADED VALVE SPRINGS REQUIRED

GREAT FOR WOODS & HUNTING VEHICLES, ROCK CRAWLING & TOWING

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE




DUAL
VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS
 



 

 



 

IMPROVED MODERATE STREET PERFORMANCE CAMS

MT



5-080
 

 



DUR @ .050" 210*/218*
LIFT .553/.553
LSA 116*
2A

 

 

 

"STAGE 1 MODERATE PERFORMANCE"
POWER RANGE  1400 TO 5700
 PROVIDES VERY LINEAR TORQUE GAINS OVER A WIDE RPM BAND
EXCELLENT FOR DAILY DRIVING & TOWING
 6.0L
GREAT FUEL ECONOMY & POWER
NOTICEABLE IDLE

(one of our most popular 6.0 highway towing camshafts!)

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE





DUAL
VALVE SPRING KIT REQUIRED



 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS


 

 

MT


5-112


sound byte

 



DUR @ .050" 210*/218*
 LIFT .552 / .552
LSA 114*
4A
 "BUTT KICKER"
"STAGE 2 MODERATE PERFORMANCE"

POWER  RANGE  1600 TO 6000

PROVIDES  HIGH TORQUE & HP GAINS WITHOUT LOW END LOSSES
DAILY DRIVER / 2WD & 4X4 1500 TRUCKS

 GREAT THROTTLE RESPONSE
 5.3L / 6.0L
PERFECT FOR THAT "DRIVE-IN" SOUND
 NICE CHOP TO THE  IDLE BUT NOT OBTRUSIVE



LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 

 

RR
RAPID RAMPS


569


sound byte



DUR @ .050" 210*/218*
 LIFT .587 / .595
LSA 114*
4A

 

 

 "BUTT KICKER HL"
"STAGE 3 MODERATE PERFORMANCE"
POWER  RANGE  1700 TO 6500

 PROVIDES  HIGH TORQUE & HP GAINS WITHOUT LOW END LOSSES
DAILY DRIVER / 2WD & 4X4 1500 TRUCKS
EXTENDED RPM RANGE

 GREAT THROTTLE RESPONSE
5.3; / 6.0L
PERFECT FOR THAT "DRIVE-IN" SOUND
 NICE CHOP TO THE  IDLE BUT NOT OBTRUSIVE
UPGRADED VALVE SPRINGS REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE




DUAL
VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS



 

 

 

 

STREET / STRIP PERFORMANCE CAMS

RR



5-045
sound byte

 


DUR @ .050" 216*/ 224*
LIFT .553/.553
LSA 115*
5A
"TRUCKER" 
STAGE 1 STREET/STRIP
the best selling 2WD truck cam in the world!
STREET / STRIP / POWER ADDERS

POWER  RANGE 1900  TO  6500
TUNING   REQUIRED / STALL CONVERTER RECOMMENDED
 6.0L
DYNAMITE WITH A SUPERCHARGER

MOST POPULAR TRUCK CAM EVER BUILT
POWERFUL CHOPPY IDLE / CAN BE TUNED DOWN

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS




ADD A SET OF 1.8R YT ROCKERS FOR A 20HP INCREASE

RR



5-224


 


DUR @ .050" 216*/ 224*
LIFT .585 /.585
LSA 115*
5A
"TRUCKER HI-LIFT"
STAGE 2 STREET/STRIP
EXTENDED POWER RANGE
STREET / STRIP / POWER ADDERS
POWER RANGE  1900 TO 6800
TUNING REQUIRED / STALL CONVERTER RECOMMENDED
6.0L
PERFECT FOR SUPERCHARGERS
MORE LIFT FOR BETTER MID & TOP END
 POWERFUL CHOPPY IDLE CAN BE TUNED DOWN
UPGRADED VALVE SPRINGS REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 

DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS




 

 
RR

 

455
KILLER IDLE
 

 


DUR @ .050" 216*/ 224*
LIFT .553 /.553
LSA 113*
4A

 

"WARRIOR"
STAGE 3 STREET/STRIP

WHEN YOU WANT THEM TO KNOW!
STREET / STRIP / POWER
POWER RANGE  2200 TO 6500
TUNING REQUIRED / STALL CONVERTER RECOMMENDED
6.0L FITS LQ9 FLAT TOPS

KILLER IDLE
 HI MIDRANGE "TORQUE" / WEEKEND WARRIOR

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 
RR



5-456
KILLER IDLE
 

 


DUR @ .050" 216*/ 224*
LIFT .585 /.585
LSA 113*
5A

 

"WARRIOR Hi-LIFT"
STAGE 4 STREET/STRIP
SUPER 2WD DRAG CAM
STREET / STRIP / POWER
POWER RANGE  2300 TO 6700
TUNING REQUIRED / STALL CONVERTER RECOMMENDED
6.0L +
MORE LIFT FOR BETTER MID & TOP END

KILLER IDLE
 HI MIDRANGE "TORQUE" / WEEKEND WARRIOR
UPGRADED VALVE SPRINGS REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS



 

 



 

STREET / STRIP COMPETITION CAMS

  RR
 


521


DUR @ .050" 218*/ 226*
 LIFT .587/.587
LSA 114*
4A
STAGE 1 STREET/STRIP COMPETITION

STREET / STRIP / POWER
POWER  RANGE  2400  TO  6700

STRONG MID-RANGE & TOP END

6.0L +
TUNING & STALL CONVERTER RECOMMENDED
  CHOPPY IDLE
UPGRADED VALVE SPRINGS REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 
RR

 

5-366
 



DUR @ .050" 220*/ 228*
LIFT .590 /.590
LSA 114*
4A
 
STAGE 2 STREET/STRIP COMPETITION

STREET / STRIP
EXTENDED POWER RANGE 2500 TO 6800
6.0L +
TUNING & STALL CONVERTER RECOMMENDED
   CHOPPY IDLE
UPGRADED VALVE SPRINGS REQUIRED

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 

DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS


 

RR


516

KILLER IDLE
sound byte 

DUR @ .050"  222* / 226*
LIFT .578 / .578
LSA 115
3A
STAGE 3 STREET/STRIP COMPETITION
STREET / STRIP
VERY POWERFUL CAM
POWER RANGE 2500 TO 6800
6.0L +
TUNING & STALL CONVERTER RECOMMENDED
POWERFUL -  CHOPPY IDLE
PERFECT FOR SUPERCHARGERS
UPGRADED VALVE SPRINGS REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 


 

RR



513



 


DUR @ .050"  222* / 228*
LIFT .552 / .552
LSA 113
4A
 
STAGE 4 STREET/STRIP COMPETITION
STREET / STRIP
POWER RANGE 2700 TO 6500
FITS LQ9 FLAT TOPS
TUNING & STALL CONVERTER RECOMMENDED
VERY POWERFUL -  CHOPPY IDLE

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 


 

RR

517


DUR @ .050"  222* / 228*
LIFT .544 / .544 @ 1.7r
LSA 112
3A
 

 

 

STAGE 5 STREET/STRIP COMPETITION
SERIOUS / STREET / STRIP
POWER RANGE 3000 TO 6600
6.0L +
TUNING & STALL CONVERTER RECOMMENDED
VERY POWERFUL -  CHOPPY IDLE
UPGRADED VALVE SPRINGS REQUIRED

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS




 

RR


566


DUR @ .050" 225*/ 232*
LIFT .578/.587
LSA 115*
3A

 

 

 

 

"STREET / STRIP STAGE 3"
VERY POWERFUL CAM
POWER RANGE 2700 TO 6700
6.0L +
TUNING & STALL CONVERTER RECOMMENDED

CHOPPY IDLE

WORKS GREAT WITH
SUPERCHARGERS
UPGRADED VALVE SPRINGS REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 


 

RR


565


DUR @ .050" 225*/ 232*
LIFT .578/.587
LSA 114*
4A

 

 

 

 

"STREET / STRIP STAGE 4 "
VERY POWERFUL CAM
POWER RANGE 2800 TO 6800
6.0L +
TUNING & STALL CONVERTER REQUIRED

POWERFUL -  CHOPPY IDLE

WORKS GREAT WITH SNIPER MANIFOLD
UPGRADED VALVE SPRINGS REQUIRED
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS



 

 

 

SUPER STREET COMPETITION CAMS

RR


575


DUR @ .050" 230*/ 238*
LIFT .595/.603
LSA 115*
5A
"SUPER STREET / STRIP STAGE 1"
POWER RANGE  3000 TO 7000
 
STREET / STRIP

SUPER 2WD 6.0L or 4WD w/STROKER
ADD A  SUPERCHARGER FOR A KILLER COMBO
  
 PROVIDES VERY HIGH POWER GAINS
GOOD STREET MANNERS
 TUNING & STALL CONVERTER REQUIRED
CHOPPY IDLE
UPGRADED VALVE SPRINGS REQUIRED
 

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 

DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

ULTRA RAMPS
UR


515


DUR @ .050" 235*/ 240*
LIFT .603/.612
LSA 112*
2A
"SUPER STREET / STRIP STAGE 2"

POWER RANGE  3200 TO 7000
GREAT FOR STROKER ENGINES / PORTED OR AFTERMARKET HEADS

STREET / STRIP
 PROVIDES VERY HIGH POWER GAINS
 TUNING & STALL CONVERTER REQUIRED
ROUGH IDLE
UPGRADED VALVE SPRINGS REQUIRED

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS




 

UR


501


DUR @ .050" 240*/ 244*
LIFT .612/.620
LSA 112*
4A
"SUPER STREET / STRIP STAGE 3"
POWER RANGE  3400 TO 7200
GREAT FOR STROKER ENGINES / PORTED OR AFTERMARKET HEADS

 PROVIDES VERY HIGH POWER GAINS
 TUNING & STALL CONVERTER REQUIRED
ROUGH IDLE
UPGRADED VALVE SPRINGS REQUIRED

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

UR


502


DUR @ .050" 245*/ 253*
LIFT .612/.620
LSA 112*
4A
"SUPER STREET / STRIP STAGE 4"
POWER RANGE 3600 TO7200
GREAT FOR STROKER ENGINES / PORTED OR AFTERMARKET HEADS

 PROVIDES VERY HIGH POWER GAINS
 TUNING & STALL CONVERTER REQUIRED
ROUGH IDLE
UPGRADED VALVE SPRINGS REQUIRED


 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 


 

 

 

TURBO CAMS

TR
TURBO RAMPS
5-67TT

 



DUR @ .050"  220*/224*
LIFT .550/.550
LSA 114*
4A
TWIN TURBO
 STREET / STRIP   
POWER  RANGE  2400 TO 6500
TUNING & STALL CONVERTER REQUIRED
POWERFUL CHOPPY IDLE



 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE



 

DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 


 

TR



509TT


 



DUR @ .050"  222*/228*
LIFT .586/.586
LSA 117*
5A
TWIN TURBO
 STREET / STRIP   
POWER  RANGE  2600 TO 7000
TUNING & STALL CONVERTER REQUIRED
POWERFUL CHOPPY IDLE

 

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 


 

TURBO VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
COMBINATION PACKAGE DISCOUNTED PRICE


 

TR

516TT

 


DUR @ .050"  222*/226*
LIFT .578/.578
LSA 115*
3A

 

TWIN TURBO
 STREET / STRIP   
POWER  RANGE  2800 TO 7000
TUNING & STALL CONVERTER REQUIRED
POWERFUL CHOPPY IDLE

 

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE



 

TURBO VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
COMBINATION PACKAGE DISCOUNTED PRICE

TR
 

5-44T

 



DUR @ .050"  216*/216*
LIFT .550/.550 
LSA 115*
5A
SINGLE TURBO
STREET / STRIP   
POWER  RANGE  2200 TO 6300
TUNING & STALL CONVERTER REQUIRED
POWERFUL CHOPPY IDLE

 

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 


TURBO
VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
COMBINATION PACKAGE DISCOUNTED PRICE


 


 

TR


530T

 

 

 

DUR @ .050"  216*/214*
LIFT .578/.586 
LSA 115*
2A

 

SINGLE TURBO / REVERSE - HI LIFT
STREET / STRIP   
POWER  RANGE  2400 TO 6600
TUNING & STALL CONVERTER REQUIRED
POWERFUL CHOPPY IDLE

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

TURBO VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
COMBINATION PACKAGE DISCOUNTED PRICE



 

TR
 

447T

 



DUR @ .050"  228*/226*
LIFT .550/.550 
LSA 117*
2A
SINGLE TURBO / REVERSE
STREET / STRIP
PERFECT FOR 1.8 ROLLER ROCKER APS
   
POWER  RANGE  2600 TO 6500
TUNING & STALL CONVERTER REQUIRED
ROUGH IDLE

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

TURBO VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
COMBINATION PACKAGE DISCOUNTED PRICE


 

TR


247T



 



DUR @ .050"  232*/228*
LIFT .550/.550 
LSA 117*
2A
SINGLE TURBO / REVERSE
STREET / STRIP
PERFECT FOR 1.8 ROLLER ROCKER APS
   
POWER  RANGE  2800 TO 7000
TUNING & STALL CONVERTER REQUIRED
ROUGH IDLE


 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE






 TURBO VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
COMBINATION PACKAGE DISCOUNTED PRICE

TR


507T

 

 



DUR @ .050"  232*/228*
LIFT .578/.578 
LSA 115*
3A
SINGLE TURBO / REVERSE - HI-LIFT
STREET / STRIP   
POWER  RANGE  2800 TO 7000
TUNING & STALL CONVERTER REQUIRED
ROUGH IDLE
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 


 
TURBO
VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
COMBINATION PACKAGE DISCOUNTED PRICE

 

 

camshaft questions: email us
roger@vincicams.com

 



 
"MAX PERFORMANCE CAMS"
for
LS3, L92, LS7, LSX, L96, LY6, L76, L99, LS9

"LS RECTANGULAR PORT HEADS"

(2007 thru 2020 non "Direct Injection" LT engines)

if equipped with dod or vvt, delete kits will be necessary

note: cam specs are for gross lift @ 1.7 rocker ratio

"Necessary to measure valve to piston clearance on all square port L92 engines with stock pistons if lift exceeds .551 or duration exceeds 220 degrees"

VHP recommends staying under .600 lift, 230 int. dur. & 240 exh. dur. on stock LS3 pistons.
 

ALL RECTANGULAR PORT CAMSHAFTS REQUIRE MATCHING DUAL VALVE SPRING KITS AND CHROME MOLY PUSHRODS!


VHP SS/SK DUAL SPRING SETS HAVE
HIGH TENSILE CHROME - SILICON STEEL - HIGH LUSTER FINISH
INCLUDES SUPER LIGHTWEIGHT TOOL STEEL RETAINERS, SPRING LOCATORS ,VITON SEALS , HARDENED  LOCKS
SPECIALLY DESIGNED FOR STREET / STRIP LSX APPLICATIONS WITH VHP AGGRESSIVE RAMP PROFILES
DROP-IN KIT / NO MODS NECESSARY
 

ANY DESIRED GRIND CAN BE BUILT ON ANY RAMP PROFILE - WE CAN MAKE IT MILDER OR WILDER!
"please include your phone number"
 

REMEMBER TO ADD LIFTERS & TRAYS TO YOUR CAM ORDER TO ENSURE YOUR WARRANTY!

 

 

IMPROVED TOWING CAMS

ramp profile &
part number

MAX TORQUE
 

511

 

DUR @ .050" 208* / 218*
LIFT .550 /.550
LSA 114*
5A
 
TOWING & PERFORMANCE STAGE 1
POWER  RANGE 1200 TO 5500
VERY HIGH TORQUE GAINS
GREAT FOR  HEAVIER TRUCKS

 NOTICEABLE  IDLE
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 
MT

 

518

DUR @ .050" 208* / 222*
LIFT .561 /.570
LSA 113*
3A
 
TOWING & PERFORMANCE STAGE 2
POWER  RANGE 1300 TO 5800
VERY HIGH TORQUE GAINS
GREAT FOR  HEAVIER TRUCKS
AND HIGH ALTITUDE

 NOTICEABLE  IDLE
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 



 

 

 

 

IMPROVED DAILY DRIVING PERFORMANCE CAMS

MT

 


562

DUR @ .050" 210* / 222*
LIFT .553 /.561
LSA 115*
4A
 DD PERFORMANCE STAGE 1
POWER  RANGE 1300 TO 5800
VERY HIGH TORQUE GAINS
GREAT FOR MEDIUM WEIGHT TRUCKS

 NOTICEABLE  IDLE

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE
 



DUAL VALVE SPRING KIT REQUIRED
 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 
MT



5-080SP
 

DUR @ .050" 210* / 218*
LIFT .553 /.553
LSA 116*
2A
"DD PERFORMANCE STAGE 2"
POWER RANGE  1400 TO 6000
NO TUNING NECESSARY
 EXTENDED TORQUE GAINS
GREAT HI-WAY CAM
NOTICEABLE IDLE 

GREAT TOWING CAM
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 

DUAL VALVE SPRING KIT REQUIRED


 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 

 

 

IMPROVED MODERATE STREET PERFORMANCE CAMS

MT



510

 

DUR @ .050" 212* / 224*
LIFT .552 /.561
LSA 114*
2A
 
  "MODERATE STREET STAGE 1"
GOOD FUEL ECONOMY
HIGH TORQUE GAINS
POWER RANGE 1600  TO  6200
TUNING REQUIRED

  MODERATE CHOP



LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE
 

DUAL VALVE SPRING KIT REQUIRED



 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 

MT


539

 

DUR @ .050" 214*/ 228*
LIFT .587/.587
LSA 115*
4A
 
  "MODERATE STREET STAGE 2"
GOOD FUEL ECONOMY
STREET / STRIP
POWER  RANGE  1800  TO  6300
TUNING REQUIRED
CHOPPY IDLE

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 

 

 

SERIOUS STREET PERFORMANCE CAMS

MT

 

448

DUR @ .050" 216*/ 228*
LIFT .553/.553
LSA 115*
4A
 
"STREET PERFORMANCE STAGE 1"
POWER RANGE  1900 TO 6300
TUNING & STALL CONVERTER SUGGESTED
PERFECT FOR SUPERCHARGERS
CHOPPY IDLE 


 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 


DUAL VALVE SPRING KIT REQUIRED

 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 
RAPID RAMPS

 

506
KILLER IDLE

 

DUR @ .050" 216*/ 228*
LIFT .553/553
LSA 113*
2A

 

"STREET PERFORMANCE STAGE 2"
STREET / STRIP
POWER RANGE 2400 TO 6600
6.0L +
TUNING & STALL CONVERTER REQUIRED

VERY POWERFUL -  CHOPPY IDLE


 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 


DUAL VALVE SPRING KIT REQUIRED



 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 
RR



5-456
KILLER IDLE
 

 


DUR @ .050" 216*/ 224*
LIFT .585 /.585
LSA 113*
5A

 

"STREET PERFORMANCE STAGE 3"
SUPER 2WD DRAG CAM
STREET / STRIP / POWER
POWER RANGE  2200 TO 7000
TUNING REQUIRED / STALL CONVERTER RECOMMENDED
6.0L +
MORE LIFT FOR BETTER MID & TOP END

VERY POWERFUL -  CHOPPY IDLE
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED



 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 HI MIDRANGE "TORQUE" / WEEKEND WARRIOR
 

 

 

 

STREET / STRIP COMPETITION CAMS

RR
 

545
 

DUR @ .050" 220*/232*
LIFT .587/.595
LSA 114*
4A
STREET / STRIP STAGE 1
POWER RANGE  2400 TO 6400
TUNING & STALL CONVERTER SUGGESTED
CHOPPY IDLE 
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 

DUAL VALVE SPRING KIT REQUIRED

 

 

CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS


 

 
ULTRA RAMPS

UR


245

 
DUR @ .050" 234*/250*
LIFT .587/.587 @ 1.7
LIFT .621/.621 @ 1.8
LSA 114*
2A
 
STREET / STRIP STAGE 2
POWER RANGE 2800 TO 7000
STROKER RECOMMENDED
TUNING & STALL CONVERTER REQUIRED
ROUGH IDLE
 
 CHECK VTP CLEARANCE

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE


 

DUAL VALVE SPRING KIT REQUIRED
 




CHROME MOLY, SUPER STIFF, .080" WALL
PUSHRODS

 

 


 

TURBO CAMS

RR

520TT

twin turbo

DUR @ .050" 228*/236*
LIFT .553/.553 @ 1.7
LIFT .585/.585 @ 1.8
LSA 117*
5A
 
STREET / STRIP / TWIN TURBO
POWER RANGE  2400 TO 7000
TUNING & STALL CONVERTER REQUIRED
CHOPPY IDLE 

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE
 




XD
TURBO
VALVE SPRING KIT & MOLY PUSHRODS REQUIRE
 


 

 
RR
 

318T

single turbo

DUR @ .050" 218*/220*
LIFT .551/.567 @ 1.7r
LIFT .585/.600 @ 1.8r
LSA 116*
+3A
 STREET / STRIP / SINGLE TURBO
POWER RANGE 2200 TO 6600
TUNING & STALL CONVERTER RECOMMENDED
 CHOPPY IDLE 

 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE




XD
TURBO
VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
 


 

 
UR

293T

single turbo
DUR @ .050" 250*/252*
LIFT .587/.587 @ 1.7r
LIFT .624/.624 @ 1.8r
LSA 117*
3A

 

SERIOUS STREET / STRIP / SINGLE TURBO
POWER RANGE 3300 TO 7300
TUNING & STALL CONVERTER REQUIRED
 ROUGH IDLE 
 CHECK VTP CLEARANCE
 

LS7 MATCHED - ROLLER LIFTERS & LIFTER TRAY SET
COMBINATION PACKAGE DISCOUNTED PRICE

 


XD TURBO
VALVE SPRING KIT & MOLY PUSHRODS REQUIRED
 


 

 

 < return to main page >

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 50 YEARS. CALL THE PROS AT VHP AND LET US HELP YOU TO CHOOSE THE RIGHT PROFILE FOR YOU.
THESE  PROFILES &  ROCKERS 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 LARGER. THIS MEANS GREAT POWER INCREASES AND EASE OF TUNING THE ENGINE MANAGEMENT SYSTEM.
< click here for more detailed info about our new accelerated lift  technology >


< click here to view more info about picking the right camshaft  >
 

 

<NO RETURNS ON CAMSHAFTS>