Push Rod
While many modern engines have overhead camshafts, there are still many vehicles with a push rod engine under the hood like American V8s. Push rod engines (also referred to as "over head valve / OHV" engines are designed with a camshaft between the crankshaft and valves. To open the cylinder head valves, a fairly long distance needs to be reached to connect the camshaft lobes to the rocker arms that push them down. This distance is covered by the camshaft lifters and pushrods. A pushrod fits into a cup / depression on top of the lifter and then rests into an area under one side of the rocker arm. The rocker arm is then tightened down to the proper valve lash setting, completing the assembly of the valvetrain. Over time from age and use, pushrods can wear, bend, or break, requiring replacement.
When looking for a replacement set of engine push rods, the first step is to confirm the year, make, model, and engine of your vehicle. Then from the remaining compatible options, choose the set that best meets your application needs and budget. For custom and performance applications, the correct length is critical. If switching between non-roller and roller camshafts, as well as factory and aftermarket cylinder heads (in addition to any machining being done to the block deck or cylinder heads, the pushrod length will vary considerably. It's always recommended to use a pushrod length checker to confirm your custom or modified engine has the proper length pushrods to avoid damage to parts. One-piece pushrods are also recommended for high-horsepower applications as well.
JEGS has a large engine push rod selection available from the best valvetrain manufacturers including COMP Cams, Crower, Lunati, Manley, JEGS, and many others. Each pushrod is made from high-quality materials and assembly to provide long-lasting performance that your engine deserves.
