Dear Customers,
Welcome to our new web site!
We have a new XTLZ lobe series that is very popular now. They feature 24 degree major intensity. They are very stable and do not beat up the valvetrain. They are available in durations from 240 t0 250, every 2 degrees. They all feature .333 lift. There may be some higher lift profiles in the future.
Important technical info for lift rule classes.
We have had some problems with customers not being able to get enough rpms from low lift profiles. This is usually due to not checking open spring pressure. The spring specs may state a sufficient pressure but it is usually for a much higher valve lift. Be sure to check your actual installed spring pressure at both open and closed checking heights that apply to YOUR heads and camshaft. The open pressure is the most important. On low lift applications it may be necessary to shim the springs to 20 or 30 lbs over the recommended seat pressure to get the right open pressure. Failure to do this may result in valve float and engine damage. DO NOT USE Z-28 SPRINGS! They will have a very short life and not enough pressure We have electro polished stock diameter springs that are working very well and are significantly cheaper than the H-11s. some people are getting a full season out of them. Remember these low lift designs are race profiles and have very radical valve motion. Good spring maintenance is very critical. Cams with dwell at Max lift (HDML series w/flat noses) usually have about a 6500 rpm limit.
If you’re not running a Camcraft cam, you’re probably following one!!!
We appreciate your continued support!!
Charles, Harriett, & David