An overhead valve engine, abbreviated (OHV) and sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber.

Feb 2, 2024 · A pushrod is a metal tube that transmits the reciprocating motion of a valve lifter to the valve. It sits on the valve lifter and rises into the rocker arm. Pushrod engines usually have one …

Apr 25, 2025 · A pushrod engine, commonly referred to as an overhead valve (OHV) engine, operates using pushrods to actuate its valves.

Jul 31, 2024 · First, we should probably discuss the three main pushrod parameters that identify a pushrod. The first is diameter. This is the outer diameter of the pushrod at its thickest point. This …

Sep 23, 2018 · Regardless of an engine’s design, if the camshaft is located in the block, a pushrod is required to transfer motion from the camshaft’s lobe to the valve. The pushrod’s length, wall …

Sep 9, 2024 · The pushrod engine, also known as the overhead valve (OHV) engine, is a classic internal combustion engine configuration that has been widely used in automobiles for decades.

Mar 4, 2025 · A pushrod’s diameter and wall thickness play an important role in performance and valvetrain stability, particularly in racing engines. A larger diameter adds stiffness by spreading out …

Feb 3, 2025 · When building or maintaining a high-performance engine, it’s easy to focus on components like rocker arms, camshafts, or valves. However, one often-overlooked part plays a …

May 23, 2024 · What is a Push Rod? A push rod is a part of an internal combustion engine that rests in the top of a valve lifter and goes up into the rocker arm. As the lifter follows the cam lobe, the push …

Sep 29, 2023 · Steel pushrods are ubiquitous in stock engines, are cost-effective and are characterized by limited strength and unimpressive weight characteristics, making them suboptimal for high …