COMP Cams Mercury Marquis Engine Parts

Picking the right camshaft can be a challenge. Use our camshaft selection guide to learn how to select the right cam for your street rod's best performance.

A guide to choosing the right camshaft for your engine. See how to install a new LSR roller camshaft while upgrading valve springs and rocker trunnions.

Derek kicks off his 55 Chevy rebuild with a fresh small block.

What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.

Mick Rau has a garage full of cool cars, but this Hirohata-inspired Merc is a standout.

How to replace sway bars in a Mercury Comet and the advantages that come with it.

Mike's Cyclone was a rare bird when it left the factory, and it's led an amazing life since then! Mike's goal is to go 200 at Bonneville in a car that has done Hot Rod Power Tour and has logged a ton of street miles...

Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

To celebrate the upcoming 106th running of the Indianaplis 500, here's a look back at a few of the engines that have competed at the Brickyard over the years.