Video: How to Measure Rocker Arms & Check the Rocker Ratio
It should go without saying that correct rocker arm specs are something you want to get right the first time. But measuring a rocker arm isn’t as straightforward as you […]
Video: Why Do Rocker Arms Break? (And How to Prevent Premature Rocker Arm Failure)
From extreme heat cycles to the constant hammering from pushrods and valves, the rocker arms in your engine’s valvetrain put up with a lot. That also means that they won’t […]
Buyer’s Guide: How to Pick the Best Scorpion Rocker Arms for Whatever Engine You’re Building—Racing, Off-Roading, Boating & Beyond
Scorpion Racing Products has been in the performance engine arena for decades now, and during that time it has developed a fantastic lineup or rocker arms for a wide range […]
Ask Away! with Jeff Smith: What Causes a Pushrod to Punch Through a Stamped Steel Rocker Cup?
We started our race engine after it sat all winter and the engine started running rough. We discovered a pushrod hat had punched right up through the pushrod cup. I’ve […]
Mailbag: 5 Things to Check When Swapping to Higher Lift Rockers
I have a 1970 Nova SS with a 11.5:1 compression, 355 cubic-inch small block. It has Sportsman II heads, a COMP Cams hydraulic camshaft (292 degrees advertised duration, .507 inches […]
Video: Installing Roller Lifters, Rockers & Pushrods on a Small Block Chevy
In today’s video, our friend Eric the Car Guy will show you how install roller lifters, roller rockers, and pushrods on a small block Chevy engine. The principals for installing […]
Rocker Rolling with Jesel’s Sportsman Shaft-Mounted Rocker Technology
Tons of options are available when it comes to rocker arms for domestic V8 engines. When examining today’s crop of roller rockers, it becomes clear that a considerable amount of […]
Mailbag: Aluminum vs. Steel Roller Rocker Arms in High-Mileage Fleet Vehicles
You’ve got questions. We’ve got answers. We work with the Summit Racing tech department to tackle your automotive-related conundrums. This week, we’re talking about aluminum vs. steel roller rockers and rocker […]
Mailbag: Troubleshooting Unwanted Lifter Noise
Q: Last year, I rebuilt my Ford 300 cubic-inch straight-six engine. The head was shaved .010”, the valve seats were reground, and the crank resized. The block was bored and cleaned […]
Quick Tech: How to Break In Stamped Steel Rocker Arms
Stamped steel rocker arms are common on budget crate engines, and many race classes require the use of stamped steel rockers. Because they do not feature a roller bearing pivot, […]