HERE AT LAST!

LSX SHAFT MOUNT ROCKERS

THE WAIT IS  OVER. WE ARE DELIVERING THE 1.7 & 1.8 RATIO ROCKERS NOW!

1.7 PRICE $1195.00


1.8 PRICE $1195.00

(VIEW ITEM)
 

<CRANE 1.7 SHAFT MOUNT ROCKER ARM PACKAGE DYNO RESULTS>

 VHP OFFERS A VALVE COVER SPACER KIT AND A BRAND NEW, INCREASED PRESSURE,  LOW HARMONICS, DUAL VALVE SPRING PACKAGE COMPLETE WITH TITANIUM RETAINERS AND A SPECIAL VALVE SEAT / LOCATOR TO INSURE THE INTEGRITY OF THE NEW SHAFT MOUNT ROCKER PACKAGE.
 

Mark Campbell
vp Crane Cams
Director of R& D
writes:

These rockers are not direct "bolt-ons", because (in our opinion) it is nearly impossible to get a good rocker geometry with a true shaft mount rocker on the LS1/LS6/LS2 head design without head modifications. To achieve the proper geometry and get an improved "Quick-Lift" performance, it is necessary to mill the rocker arm bosses .170" so that the rocker stands can be placed lower to allow the rockers to operate in the proper arc. This is really no different than machining the rocker bosses on old SBC heads. Additionally, while the heads are being machined, we have supplied 3/8 diameter stand mounting bolts which necessitates drilling and tapping the OE 8mm holes to 3/8-16. This larger bolt diameter assures holding the stands in place even with extremely high valve spring open pressures! In spite of the milling, we were unable to fit these rockers under the stock valve covers and they will require a 3/4" thick spacer. The rockers will not be sold with pushrods but they will come with an adjustable checking pushrod to determine proper pushrod length. My guess is that 7.350-7.400" will be the length that most people will need.

 These rockers feature the polymer matrix composite bearings in place of needle bearings. The PMC bearings are pressure oiled via the pushrod and a drilled pushrod seat. They are extremely quiet and extremely strong. The rocker bodies have a very low moment of inertia (partially achieved through the elimination of the steel needle bearings) and can handle open pressures in excess of 850#

Finally, the way I have described the rockers and stands is with a machined and tumbled finish. (both the stands and rockers are a special alloy of aluminum). We will also be offering these rockers and stands with a Mikronite processing that will increase the strength of the rockers and stands by over 25%. This provides additional strength beyond what I have all ready described. Additionally, the Mikronite finish looks superb. It is not a coating, but a sophisticated finishing process that results in a "chrome-like" appearance but which also increases the residual compressive stresses in the outer layer and near surface substrate of the aluminum-vastly increasing strength and longevity.

We feel that these "Quick-Lift" Shaft mounts will be the ultimate rocker arm for the LSx family at a price well below what people currently think is the "ultimate shaft system".

< click on pictures to enlarge >

SHAFT MOUNT ACCESSORIES