Comp Cam Xtreme Energy .507/.510

For engines which are mostly used in high performance street applications and don't see the racetrack too much, we recommend this Comp Extreme Energy .507/.510. This is a great replacement for the old "Mopar purple shaft .509" It's similar lobe specs and slightly extra "duration per lift" ratio help to preserve the flat, wide torque curve and top end power we all remember from the .509" Mopar, but Comp's 30 years of manufacturing technology have tweaked the lobes a bit to give you much faster rates of lift. This helps to increase the low end response and driveability over the original .509" and gives you more vacuum, and the ability to use a lower stall converter, although we'd still run a 2800+ in a stock displacement engine, or a 2500+ in a stroker. Duration at .050" comes in at 240 on the intake and 246 on the exhaust, and it's on a 110 degree lobe separation angle. For a high performance 500+ inch stroker application, this is probably the smallest cam you'd want to go with. In a stock displacement application, the power band on this cam will be about 2300-6500 RPM, in a stroker that will usually lower to about 1800-6000 RPM, depending on the heads and other parts of the combination. 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.