Which component is designed to adjust cam timing through slots and adjustment bolts?

• A. Cam Bushing
• B. Adjustable Cam Gear
• C. Pushrod
• D. Rocker Arm

Answer: (B)

The exact component designed to adjust cam timing with slots and adjustment bolts is the adjustable cam gear. Cam timing is about when the valves open and close in relation to the piston, and some cam timing setups include a gear that can be slid or rotated a little and then locked in place. The slots allow precise movement, and the adjustment bolts let you clamp the gear once you’ve set the desired position, giving you a way to advance or retard timing as needed.

Other parts in the list have different roles. A cam bushing is a bearing that supports the cam and reduces wear, not a mechanism for changing timing. A pushrod is a rigid link that transfers motion from the cam to the rocker arm, without adjusting timing. A rocker arm simply transfers motion from the camshaft to the valve and may adjust valve lash in some designs, but it does not adjust the cam timing through slots and bolts.