4L80E (97+) Low Gear Planetary W/ 2.75 First Gear; 1.57 Second Gear.
Part # 277501

Our Low Gear Planetary for 97+ 4L80E Transmissions is a great way to gain more gear reduction for better low-end response/ torque without sacrificing your cruising RPM/Economy. Features a 2.75 1st gear instead of OEM 2.48.

4L80E (97+) Low Gear Planetary W/ 2.75 First Gear; 1.57 Second Gear.

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4L80E (97+) Low Gear Planetary W/ 2.75 First Gear; 1.57 Second Gear.

Part # 277501

Our Low Gear Planetary for 97+ 4L80E Transmissions is a great way to gain more gear reduction for better low-end response/ torque without sacrificing your cruising RPM/Economy. Features a 2.75 1st gear instead of OEM 2.48.

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Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. 'Proven performance' is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quality. Edelbrock core products are engineered manufactured and tested in the USA to ensure the best quality possible. This is further backed by some of the best warranties in the industry and a highly qualified technical support staff.

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The planetary creates all of the different gear ratios that a transmission is able to produce. An automatic transmission contains two complete planetary gearsets folded together into one component. A planetary gearset has three main components: Sun Gear Planet Gears and Carrier along with a Ring Gear. Each of these three components can be the input the output or can be held stationary. Choosing which piece plays which role determines the gear ratio for the gearset. TCI offers a variety of low gear replacement planetaries for several of the most popular Ford and GM transmissions. With additional gear reductions in both first and second gear these gear sets work well in all applications requiring an additional gear for better take-off. From heavy drag cars to off-road 4x4s to tow trucks a TCI Low Gear Planetary can improve low end torque without adversely affecting the final drive ratio.