Originally Posted by boosted95

would you sell the ls2 front cover and sensor by its self?

Originally Posted by Bizzles

PM sent for diet carpet.

Originally Posted by big_ole_blazer

are you interested in selling the 1.7 rockers separate from the heads? If so what would you be asking?

Originally Posted by Beaflag VonRathburg

^ They just refuse to read the thread.

I got another one last night... Guys, I can't reiterate this enough, PLEASE READ THE THREAD. If you are interested in an item at bare minimum please read the description and look at the price.

I also save the amazing responses and questions I get from people in a Word Document. I lost part of it when my computer crashed, but it has been growing rapidly recently.

Originally Posted by Mark Campbell

Nice to see all of the interest in our new shaft mounts for the LSx engine family. The delay in the introduction has been the tooling for the new polymer-matrix composite bearings. Well the bearings just came in yesterday and we are completing the paperwork (instructions, packaging, etc) and hope to start shipping in a couple of weeks.

Part #'s are 144809-1 for the 1.7 ratio and 144808-1 for the 1.8 ratios. There will also be rockers available in 1.75, 1.85 and 1.9 ratios. 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#

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.

As far as pricing goes, I'm in R&D and the sales people figure the pricing, but it is my guess that the "retail" price of these shaft mounts should be well under $1000.00: however, I have an agreement with the sales people...they stay out of R&D and I stay out of sales!!!!

As soon as I know what the pricing is, I will post it.

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".

Again, thanks for everyone's interest!

Mark Campbell
VP, R&D,
Crane Cams, Inc.