pushrod length

Proper pushrod length is essential for achieving optimum valvetrain geometry. In fact, with today’s more-aggressive camshafts and higher valve-spring pressures, determining the right pushrod length has never been more critical to the performance and wellbeing of an engine. Several factors work together to determine the required pushrod length—rocker arm brand, valve stem length, camshaft design, lifter style, engine

Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re talking pushrod length and how to measure it! J.L. • Florence, AZ Q: I’m about to upgrade my 1969 El Camino’s valvetrain. However, I don’t want to go through the hassle of measuring the length for the pushrods.