Comp Cam Xtreme Energy .488/.491

For stock displacement engines which are mostly used in high performance street applications and don't see the racetrack too much, we recommend this Comp Extreme Energy .488/.491. This is a great replacement for the old "Mopar purple shaft .484" It's similar lobe specs preserve the strong midrange torque we all remember from the .484" Mopar, but Comp's 30 years of manufacturing technology have tweaked the lobes to give you much faster rates of lift. This helps to increase the low end response and driveability over the .484" and gives you a much cleaner idle, more vacuum, and the ability to use a lower stall converter, (such as a 2200+.) Power band of this cam in a stock displacement engine will be about 1800-6000 RPM. We generally don't recommend this one in a 500+ stroker, for the vast majority of these applications, it's just going to be too small. Duration at .050" comes in at 230 on the intake and 236 on the exhaust, and it's on a 110 degree lobe separation angle. We feel the three bolt timing chain attaching system is far superior to the single bolt, and so we offer this cam to fit only three bolt timing chain sets. We carry them (along with the required bolts, etc.) on our timing chains page. Don't forget to order Comp lifters and break-in lube (shown below) with your new cam! These items are considered essential to ensure that your cam has the longest possible life and is fully covered under Comp's warranty policy. And, since this is Comp we're talking about, you can be assured of two things: The product is 100% made in the USA, and the quality is second to none. This cam uses a single spring, but requires 10 Degree locks and retainers. Use our 145-1002 locks (with 11/32" valves), and our 145-1003 retainers.