These racing cams feature 322°/308° angles and 14.70mm/13.00mm measurements. They are designed for professionally built, large - displacement K series race engines and single - seat midget race cars. Require a 13:1+ compression ratio, CNC ported heads, and high RPM. The primary/intermediate lobe specs are 268 & 264/264 degrees advertised duration and 10.0mm & 10.0mm/10.00mm lift.

These racing cams are for high - performance engines. First, make sure your engine has a 13:1+ compression ratio and CNC ported heads. When installing, follow the manufacturer's guidelines carefully. During use, keep an eye on RPM, as these cams work best at high RPMs. For maintenance, regularly check the cam lobes for wear. If you notice any abnormal noise or performance issues, stop using the cams and have them inspected. Keep them clean and lubricated as recommended in your engine's manual.