Tru-Time Adjustable Cam Gear by AEM®. Gain horsepower and torque without going through the hassle or expense of changing your camshaft with an AEM Tru-Time Adjustable Cam Gear. CNC machined from 6061 T-6 billet aluminum and hard anodized to prevent wear, these gears will enable you to dial in the camshaft for accurate cam timing with stock or aftermarket cams, as well as advance/retard cam timing +/-10 degrees to change the powerband and/or increase power. Laser-etched markings on leading edge of gear allow for quick, accurate adjustments. Essential for engines with heads that have been milled, as well as engines that have been modified with forced induction, high compression, and/or aftermarket high-performance cams.
- Increases horsepower and torque without changing camshaft
- Enables cam timing to be adjusted +/-10 degrees
- Allows cam to be dialed in for accurate stock or recommended timing setting
- Allows cam timing to be advanced/retarded to move powerband in RPM range and/or increase horsepower and torque
- A must to restore cam timing when head(s) have been milled
- Perfect for engines with aftermarket camshaft, high compression, and forced induction (turbocharger/supercharger)
- CNC machined from 6061 T-6 billet aluminum
- Precision-cut gear teeth prevents premature wearing of belt surface
- Hard anodizing on gear teeth lab-tested proven hardest on the market
- True laser-etched markings on leading edge of gear ensure enables quick, accurate adjustments
- Grade-8, 6-point hex bolts feature integral washer flange for greater load distribution, to stand up to repeated adjustments
- For off-road use only
- Comes with detailed instructions and recommended cam gear settings
- Sold individually
- Limited 1-year warranty
- Proudly manufactured in USA
If you want to make the most power, never just install a cam or set of cams and think that everything's fine because you lined up the timing marks. Due to manufacturing tolerances many stock and aftermarket camshafts are off a degree or two, and dialing in the cam timing to compensate for the deviation can result in horsepower gain. Furthermore, the savvy tuner knows that the powerband can be moved around and as much as 10-15 horsepower can be gained by advancing/retarding the cam timing. This is especially true on engines that have been modified with aftermarket camshafts, high compression, or forced induction like a turbocharger or supercharger.
To simplify cam timing changes AEM created Tru-Time Adjustable Cam Gears. CNC machined from heavy-duty 6061 T-6 billet aluminum, these gears allow the position of the hub to be changed in relation to the gear teeth, so you can advance/retard the cam timing +/-10 degrees. The timing markings are laser-etched on the leading edge of the gear for clear visibility. Once the desired position is attained the Grade-8 6-point bolts are tightened. The bolts feature integral washer flanges to distribute the load and endure repeated adjustments. Besides their adjustability, these gears are made to last. The gear teeth are precision cut to ensure the belt contact surface doesn't wear prematurely, and the surface is also hard anodized with the most durable anodizing process on the market.
An adjustable cam gear is also effective at restoring proper cam timing when heads have been milled. Milling the head on an overhead cam engine moves the head closer to the crankshaft, retarding the cam timing. The adjustable gear can accommodate this change and restore correct cam timing.
Tru-Time Adjustable Cam Gears are sold individually. They come with comprehensive, illustrated instructions and recommended cam gear settings. They're proudly made in the USA for off-road use only, and they're backed by a limited 1-year warranty against defects in materials and workmanship.
John Concialdi and Bob Sullivan co founded AEM® in 1987 as a tuning performance shop in Compton California. Both men had extensive technical backgrounds in engines and engine airflow, and in a short time AEM became the go-to company for performance modifications. By 1993, when the company relocated to Gardena California, it had become commonplace to see cars wearing the bright yellow AEM logo winning races. AEM tirelessly dyno tested and worked closely with racers and auto manufacturers in an effort to understand intake energy dynamics. This resulted in the sale of their first air intake kit in 1994. AEM can boast a number of firsts and unique products. They’re the first manufacturer to make an intake system with specific tube lengths and diameters to take advantage of pressure waves in the inlet tract; they developed the first dual chamber intake kit; they designed an air bypass valve to prevent hydro-lock should the air filter ingest water; and they created one of the first hybrid intake systems for modified cars. AEM continues to create innovative products to help you get more power from your car.