Tech

Got questions?  We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re talking valve spring pressure and how it affects valvetrain performance. C.K.• Somerville, OH […]

There’s usually at least one thing missing from a kit project: the engine. While Factory Five supplies most of what’s needed to complete the Mk4 roadster, getting it running on […]

Choosing a muffler for your vehicle is almost like picking a soundtrack for your driving adventures. Do you want a low-pitched growl, a raspy exhaust tone, or just an all-out […]

Got questions?  We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re covering rocker arm ratio and how it affects performance. S.B. • Atlanta, GA […]

This video covers the fundamental differences between lock-up and non lock-up torque converters, including a breakdown of the anatomy of a lock-up torque converter, and the advantages of using one. […]

Got questions?  We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’ll show you some tricks for getting better gas mileage this holiday season–and all […]

[Editor’s note: This article was originally posted in 2012. Since then, the Percy’s company was purchased by Taylor Cable. Taylor is still making Adjust-a-Jet kits, but now under the Taylor […]

In this 15-minute Quick Flicks video, the gang at Summit Racing takes the guesswork out of choosing a camshaft for your Ford 5.0L, providing some general guidelines for choosing a cam […]

P.W. • Rosholt, WI Q: I have a 1984 Chevy Z28 Camaro with an HO 305 engine and 5-speed transmission. I want to increase horsepower and gas mileage while staying […]

The spark plug is the Rodney Dangerfield of the hot rodding universe. It gets no respect—or at least very little. As performance enthusiasts, we tend to focus on power builders […]