LS9 head stud kits now in stock

[Katech_Jason]

We now have LS9 head stud kits which are a direct replacement for the OEM head bolt. Includes studs, nuts, washers and required lube. $299.99

http://store.katechengines.com/Product203

[OnPoint]

Jason,

Pardon my ignorance, but are these to rectify a weakness with the stock motor, or are these something someone who is bumping up the power/boost of a ZR1 might consider?

Travis.

[Katech_Jason]

Originally Posted by OnPoint

Jason,

Pardon my ignorance, but are these to rectify a weakness with the stock motor, or are these something someone who is bumping up the power/boost of a ZR1 might consider?

Travis.

There are a number of reasons why you might use head studs.

First, all fasteners stretch when they are torqued. This is what provides the clamp load. Fasteners return to their original length when they are removed, unless they are stretched to a point where they can not return. This is called the yield point. Some fasteners, such as head bolts, are TTY (Torque To Yield) and are not reusable. Head studs such as these have a torque spec which is below the yield point of the fastener so they can be reused. Reusing head studs can make it more cost effective than using bolts in applications where changes to specification or components, or repairs/rebuilds necessitate removal of the heads.

Second, head studs can provide more uniform clamp load on the head gasket because they have not been torqued to their yield point and they are often made from stronger materials, have been heat treated and have a higher tensile strength. This is effective for extreme duty racing applications or boosted applications such as the LS9.

Third, and the most important right now, LS9 head bolts are unobtainable at this time.

[Katech_Jason]

Well, good news on these kits. The response has been pretty good and the volume may be higher than I originally thought. So, we have been able to increase our volume and reduce the cost per piece. We have reduced the retail price to $299.99/set which is the same price as our other head stud kits.