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.

A pushrod is a component used in certain internal combustion engines to transfer the motion required to open and close the intake and exhaust valves. It is essentially a slender metal rod or tube that acts …

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 …

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.

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

Sep 28, 2021 · Pushrods are available in three-piece and one-piece designs. A three-piece design features a tube with hardened lower and upper tips. A one-piece design features a hard­ened one …

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 …

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 …

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 …

Simply put, pushrods channel energy from the lifter to the rocker arm. If mismatched, they can cause engine failures due to inappropriate valve timing and lift. The right pushrod ensures maximum …