Where can pushrods be found in a engine?

In an internal combustion engine, pushrods are typically located in the cylinder head, where they are used to transmit motion from the camshaft to the valves. The camshaft is usually driven by the crankshaft through a timing belt or chain, and it rotates at half the speed of the crankshaft. The pushrods are actuated by the camshaft lobes, which press on them and cause them to move up and down. This motion is then transferred to the valves, which open and close the ports in the cylinder head.