All You Need To Know About The Components Of 4L80E Level 4 Transmission
Undoubtedly, the GM 4L80E Performance Transmission Level 4 is a name to be reckoned with. With a staggering horsepower capacity 800 and the ability to handle up to 700 ft-lbs of torque, this transmission is engineered to offer the best results. To know more about the transmission, you need to explore a series of options before you look at other options.
In this blog post, we will focus on the components that make up this formidable transmission, exploring the technical intricacies that set it apart in the automotive industry.
Custom-Built Converter: The Heart of the Beast
At the core of the GM 4L80E Level 4 transmission is a custom-built and custom-stalled 10.5” Lock-Up Billet Racing converter. This converter is meticulously crafted to match the performance requirements of the Level 4 transmission. Its stall speed ranges from 2800 to 3600 RPM, ensuring the engine's power is efficiently transmitted to the drivetrain. The billet construction enhances durability and heat dissipation, making it an ideal choice for high-performance applications.
Master Overhaul Kit with Alto Hardened Steels
Inside the Level 4 transmission, precision and strength go hand in hand. The master overhaul kit includes alto-hardened steels, which are designed to withstand the punishing forces generated by high-powered engines. These steels ensure that the transmission's components can endure the rigors of intense driving conditions, providing longevity and reliability.
Raybestos Stage I Frictions
Friction is the key to transmitting power within the transmission, and the Raybestos Stage I frictions excel in this regard. These high-performance friction plates are engineered to deliver consistent and reliable power transfer, even under extreme conditions. They are a crucial element in maximizing the Level 4 transmission's performance capabilities.
Transgo Reprogramming Kit
The purpose of the kit is to optimize shift points, improve shift quality, and enhance overall performance. Also, the GM 4L80E Level 4 transmission incorporates a Transgo reprogramming kit. This kit fine-tunes the transmission's hydraulic control system, ensuring that gear changes are seamless and responsive. It's a vital component that transforms the Level 4 transmission into a precision instrument.
Filter, Bearings, Bushings, and Thrust Washers
In addition to the components mentioned above, the transmission consists of components suitable for performance transmissions.
The inclusion of several essential components further ensures the transmission's longevity and reliability:
Filter
The filter prevents contaminants from entering the transmission, preserving the integrity of its internal components.
Torrington Bearing Kit
New Torrington bearings are installed to minimize friction and support smooth gear engagement.
Bushing Kit
New bushings reduce wear and maintain proper alignment of internal components.
Thrust Washer Kit
Thrust washers play a critical role in controlling axial movement within the transmission, preventing excessive wear, and maintaining precise tolerances.
New Internal Wiring Harness
Modern transmissions rely heavily on electronic controls, and the GM 4L80E Level 4 is no exception. A new internal wiring harness is incorporated to ensure reliable communication between the transmission and the vehicle's control system. This harness is engineered to handle the demands of high-performance applications, promoting seamless integration.
Solenoids and Sensors for Enhanced Control
Precise control is paramount in high-performance transmissions. The GM 4L80E Level 4 includes several new solenoids and sensors to achieve this:
Manifold Pressure Switch
This switch monitors the intake manifold pressure and assists in determining the optimal shift points, enhancing overall performance.
EPC Solenoid
The Electronic Pressure Control (EPC) solenoid regulates transmission line pressure, ensuring that shifts are crisp and efficient.
PWM Solenoid
The Pulse Width Modulation (PWM) solenoid plays a crucial role in controlling torque converter lock-up, contributing to improved fuel efficiency and performance.
Input & Output Speed Sensors
These sensors provide essential data to the transmission control module, facilitating precise gear selection and shift timing.
1-2 Shift Solenoid and 3-4 Shift Solenoid
These solenoids govern the engagement of gears, ensuring smooth transitions between gears.
Enhanced Clutch Assemblies
The purpose of enhanced clutch assemblies is to handle the increased power and torque of the Level 4 transmission; several clutch assemblies have been upgraded:
Expanded Capacity Forward Clutch Drum
This component allows for greater clutch engagement, accommodating the increased power output.
Extra Capacity Second Gear Clutch Assembly
The second gear is reinforced to handle elevated performance levels, providing durability and reliability.
Expanded Capacity Third Clutch Drum
The third clutch drum is also expanded to ensure it can handle the power while maintaining performance.
Upgraded Shafts and Pistons
Power transmission through the transmission's internals is made possible by the following upgrades:
Heat-Treated Input Shaft
This heat-treated input shaft is designed to withstand immense torque levels, preventing deformation and ensuring longevity.
300M Main Shaft
The 300M main shaft is renowned for its strength and durability, making it a critical component in the Level 4 transmission.
300M Forward Clutch Hub
The forward clutch hub is also constructed from 300M steel, enhancing its capacity to handle power.
Updated Molded Steel Direct Clutch Piston
The direct clutch piston is reinforced with molded steel, providing greater durability and longevity.
Updated Reverse Band
The reverse band is upgraded to handle the demands of high-performance driving, ensuring reliable reverse gear engagement.
Additional Performance Enhancements
The GM 4L80E Level 4 transmission is not just a mere assembly of parts; it's a meticulously crafted engineering marvel. Within its robust framework, several strategically selected additional components have been integrated to push its performance capabilities to the absolute limit.
Supplementary Components
These supplementary components serve as the transmission's backbone, enhancing its ability to handle the immense power and torque levels demanded by high-performance applications. They are the unsung heroes working harmoniously with the core components, ensuring the transmission's exceptional performance and reliability.
Among these critical enhancements include a new Low Roller Assembly, a Wide Kickdown Band with a New Apply Piston, a Heavy Duty Intermediate Sprag, an Updated Boost Valve, Updated TCC Regulator Valve, and Line to Lube Pressure Regulator Valve.
Collectively, these additional components elevate the GM 4L80E Level 4 transmission to the pinnacle of high-performance transmission technology, delivering a driving experience that combines power, precision, and reliability for enthusiasts who demand nothing but the best.
The GM 4L80E Level 4 transmission is equipped with several additional components to maximize its performance capabilities:
New Low Roller Assembly
The low roller assembly contributes to smooth and efficient gear engagement, especially in lower gears.
Wide Kickdown Band w/New Apply Piston
The wide kickdown band ensures that downshifts are responsive and effective, allowing the transmission to adapt to various driving conditions.
Heavy Duty Intermediate Sprag
The intermediate sprag is reinforced to prevent slipping and provide consistent performance.
Updated Boost Valve
The boost valve enhances line pressure control, ensuring that shifts are firm and precise.
Updated TCC Regulator Valve
The Torque Converter Clutch (TCC) regulator valve is updated to improve lock-up control and fuel efficiency.
Blue Printed Pump & Valve Body
The pump and valve body are meticulously blueprinted to exacting standards. This process ensures that hydraulic fluid is delivered precisely to the transmission's components, guaranteeing optimal performance and durability.
Transmission Mount and OEM Steel Pan
To ensure secure installation and support, a transmission mount is included in the Level 4 package. Additionally, a new OEM steel pan is provided, enhancing the transmission's structural integrity and overall performance.
Concluding Comments
The GM 4L80E Performance Transmission Level 4 by Gearstar represents the pinnacle of performance and durability in the automotive industry. With its ability to handle 800 horsepower and up to 700 ft-lbs of torque, it is the perfect choice for enthusiasts seeking to unlock the full potential of their vehicles.
Footnotes
The meticulous selection of components, from the custom-built converter to the upgraded clutch assemblies and solenoids, ensures that this transmission can withstand the demands of high performance driving while delivering smooth and precise shifts.
Whether you are on the track or the street, the GM 4L80E Level 4 transmission is ready to take your driving experience to a new level of performance and excitement.
