Adjustable Cam Gears & Cam Pulleys

Shop adjustable cam gears, cam sprockets, and slide cam pulleys for precise camshaft timing control in performance engines. This collection includes application-specific timing components for Honda and Acura B-Series, D-Series, H-Series, F-Series, K20 and K24 engines, Mitsubishi 4G63, Subaru EJ, Nissan SR20 and RB engines, Toyota 1JZ, 2JZ, 4A-GE and 7M platforms, Mazda Miata applications, Ford modular engines, and other popular builds.

Choose performance cam gears from HKS, GReddy, Brian Crower, Skunk2 Racing, BLOX Racing, AEM, Fidanza, Torque Solution, and COMP Cams. Available products include single gears, intake and exhaust pairs, complete multi-gear sets, non-VVT applications, AVCS-compatible hardware, and replacement cam gear bolts.

What Do Adjustable Cam Gears Do?

An adjustable cam gear changes camshaft timing in small measured increments relative to crankshaft position. Advancing or retarding the cam can move the engine's torque curve, change boost response, and help an engine builder optimize valve events for the cam profile, compression ratio, cylinder head flow, and intended RPM range. The correct setting depends on the complete engine combination rather than the gear alone.

Engine-Specific Cam Gear Fitment

Cam gears are not universal. Tooth profile, timing-belt or timing-chain design, camshaft bolt pattern, sensor trigger provisions, intake or exhaust position, and variable-valve-timing compatibility vary by engine family. A product made for a Honda B-Series engine will not fit a K-Series engine, and non-AVCS Subaru gears differ from AVCS applications. Match the listing to the exact engine code, cylinder head, cam position, and model year.

Single Gears, Pairs, and Complete Sets

Some single-overhead-cam engines require one adjustable gear. Dual-overhead-cam applications may require separate intake and exhaust gears, while certain Subaru engines use sets of two or four. Product listings may be sold individually even when the engine requires more than one. Confirm the quantity, cam position, center bolt requirements, and included hardware before ordering.

Cam Degreeing, Installation, and Tuning

Printed timing marks provide a reference, but a performance camshaft installation should be verified with proper cam-degreeing equipment. An engine builder can use a degree wheel and dial indicator to measure actual valve events and confirm piston-to-valve clearance. Follow the camshaft and gear manufacturer torque specifications, fastener instructions, and adjustment limits. A professional calibration is recommended after meaningful cam timing changes.

Supporting Timing and Valvetrain Components

Inspect the complete timing system while access is open. Worn timing belts, chains, tensioners, guides, cam seals, fasteners, valve springs, or retainers can compromise accuracy and reliability. For a coordinated build, explore our camshafts, timing chains, and valve springs and retainers.

How to Choose the Correct Cam Gear

• Confirm the exact engine code, cylinder head, and model year.
• Identify timing-belt, timing-chain, VVT, AVCS, or non-VVT configuration.
• Match the tooth profile, cam bolt pattern, and sensor provisions.
• Verify intake, exhaust, or universal cam position within the stated application.
• Check whether the listing contains one gear, a pair, or a complete set.
• Confirm center bolts, washers, and other required hardware are included.
• Review timing-cover clearance and manufacturer installation instructions.
• Degree the camshaft and verify piston-to-valve clearance before operation.

Frequently Asked Questions

Are adjustable cam gears universal?

No. The gear must match the engine's timing drive, camshaft bolt pattern, tooth profile, trigger design, and cam position.

Do cam gears add horsepower by themselves?

A cam gear provides adjustment rather than guaranteed power. Gains depend on the engine combination, camshaft profile, timing settings, and calibration.

Do I need a tune after changing cam timing?

Professional tuning is recommended because cam timing changes can affect airflow, idle quality, torque delivery, boost response, and safe operating limits.

Can adjustable gears work with factory VVT?

Compatibility depends on the engine design. Many VVT engines require an application-specific gear, modified phaser, or factory phaser retention.

Should timing components be replaced during installation?

Replace worn or service-due belts, chains, tensioners, guides, seals, and fasteners while the timing system is accessible.

Shop Cam Gears at Black Ops Auto Works

Browse the complete cam gears collection for Honda, Acura, Mitsubishi, Subaru, Nissan, Toyota, Mazda, Ford, Dodge, and other performance platforms. Read the individual product description and manufacturer instructions carefully to confirm engine code, cam position, quantity, and installation requirements.