Comp Cams uses various materials to make camshafts depending on what is best for that individual engine and application. We use a wide array of materials due to the fact that we cover a very wide variety of engines. Austempered cam cores are not used in LS applications nor have they ever been by our company. Our LS cams are made predominantly from 5160 or 8620 material. Either the 5160 or 8620 material is more than capable of handling any Hyd. Roller LS application. The difference in materials used has no effect on quality control what so ever and I am not sure what would lead you, or anyone else, to believe that it would. Also all of our cores are produced in the US and come from 1 of 2 sources. These are the same sources that sell cam cores to most every cam manufacturer out there, including the OE manufacturers. I can assure you that no “cheap” or overseas core is ever used in a Comp Cams product. When grinding a camshaft the core specifications must be as close as possible to the finished cam grind specs in order to maintain the deepest possible heat treat. That is why Comp has the largest selection of cam cores in the industry.
Comp maintains some of the highest quality control standards of any camshaft manufacturer in the world. Our cam grinds will be closer to the specs on your card versus any other grinder. We see less than 1% defect rates in our LS cams, which is lower than any other manufacturer that I am aware of. Also there has been no consistent heat treat issue of any type that I am aware of. This is not to say there has never been individual issues, but nothing that has been a continual issue. While it is certainly true that we are not perfect and we do encounter the occasional issue with one of our parts, we do try very hard to ensure that problems are very minimal and we have kept it at a level of less than 1% regarding LS camshafts.
Tolerances for our cams are:
Lobe Separation: +/- 1 degree
Advance: +/- 2 degrees if specified
Duration @.050: +2.5/-1.0 degrees
Lobe Lift: +.003/-.004
We do care about our customers and their projects because we rely on them for our livelihood. We strive to make the best performing and the longest lasting product possible. No company is perfect, but we do try. Also, if a customer has a problem with a product we do everything we can to help fix it.
I would also like to direct you toward a press release put out by Driven Engine Oil. It highlights the importance of proper engine oil especially in LS engines.
Driven Press Release
http://www.autopressreleases.com/view-release.php?id=1324.