HOLLEY SE1-C107387-LTX-A2 Gm Level Swap 090127996539 73-87 79-87 C20/BLAZER 4L80E

( Brand: Holley ), ( Manufacturer Part Number: SE1-C107387-LTX-A2 ), ( UPC: 090127996539 )

Review HOLLEY Gm 73-87 79-87 C20/blazer Level Swap Essentials fits BLAZER C10 C20 LT

The Holley SE1-C107387-LTX-A2 is a transmission control module specifically designed for GM vehicles with 73-87 C10 and 79-87 C20 models, including Blazer and other similar applications. This module is an essential component for those looking to perform a level swap using a 4L80E transmission.

This module comes with numerous features that make it an ideal choice for such applications. It includes an integrated speed sensor, temperature sensor, and oil pressure sensor, which are necessary for the proper functioning of the 4L80E transmission. Additionally, it supports electronic shift control, ensuring smooth and efficient shifting.

The Holley SE1-C107387-LTX-A2 is designed to be plug-and-play, making the installation process straightforward and hassle-free. It comes with a harness that connects directly to the wiring harness of the vehicle, eliminating the need for complex wiring modifications.

The module is also equipped with diagnostic capabilities, allowing users to easily identify and troubleshoot any issues that may arise. It uses standard diagnostic codes, making it compatible with most diagnostic tools in the market.

This transmission control module is built with high-quality components and is designed to withstand the rigors of off-road and high-performance applications. It is also compatible with various fuel systems, including EFI and carbureted applications, making it a versatile choice for various vehicle configurations.

In summary, the Holley SE1-C107387-LTX-A2 is a reliable and robust transmission control module designed specifically for GM vehicles requiring a level swap using a 4L80E transmission. Its plug-and-play design, compatible diagnostic capabilities, and compatibility with various fuel systems make it an excellent choice for those seeking a seamless and efficient upgrade for their vehicle.

The Holley SE1-C107387-LTX-A2 is a 4L80E transmission leveling kit designed for GM vehicles like Blazers from the years 1973 to 1987 (C10 for short wheelbase models) and 1979 to 1987 (C20 for long wheelbase models). Installing this kit involves replacing the stock transmission crossmember with a new one that provides the necessary clearance for the 4L80E transmission. This kit is an attractive option for those looking to upgrade their vehicle's transmission for improved performance and durability.

1. Compatibility: This kit is specifically designed for GM Blazers from the mentioned years, making it a reliable and precise solution for those seeking to upgrade their vehicles.

2. Improved transmission performance: The 4L80E transmission is known for its strength, durability, and high-performance capabilities, making it an excellent choice for those seeking to enhance their vehicle's power and torque.

3. Smoother shifts: The 4L80E transmission offers smoother and quicker shifts compared to the stock transmission, improving overall driving experience.

4. Better towing capacity: The 4L80E transmission can handle heavier loads and larger engines, making it an ideal choice for those who frequently tow trailers or haul heavy cargo.

5. Customizability: The 4L80E transmission is compatible with various engine configurations, allowing for greater flexibility and customization options.

1. Cost: The Holley SE1-C107387-LTX-A2 kit is a more expensive option compared to the stock transmission and installation process, which may deter some potential buyers.

2. Complexity: Installing the 4L80E transmission and related components may require extensive mechanical knowledge and expertise, potentially leading to a lengthy installation process and additional costs for professional services.

3. Weight increase: The 4L80E transmission is heavier than the stock transmission, which may impact the vehicle's handling and fuel efficiency.

4. Potential compatibility issues: While the Holley SE1-C107387-LTX-A2 kit is specifically designed for GM Blazers, there may be instances where it does not perfectly fit or function as intended, requiring additional modifications or adjustments.

5. Potential drivetrain adjustments: Installing the 4L80E transmission may require adjustments to the vehicle's driveshaft, transfer case, or other drivetrain components, which could add to the overall installation cost and complexity.

In conclusion, the Holley SE1-C107387-LTX-A2 kit offers numerous benefits, such as improved performance, smoother shifts, and better towing capacity. However, it also comes with drawbacks, such as increased cost, complexity, weight, and potential compatibility issues. Ultimately, the decision to purchase this kit depends on the individual's priorities, mechanical expertise, and budget.

If you are confident in your mechanical abilities, have the necessary resources, and are willing to invest in a high-performance transmission upgrade, then the Holley SE1-C107387-LTX-A2 kit may be an excellent choice for you. Otherwise, you may want to consider alternative solutions or seek professional advice before making a decision.

Details:

Holley has taken the guesswork out of picking right parts needed to swap your GM muscle car or truck with our Swap Essentials Packages. GM 73-87 C10, 79-87 C20/Blazer Level 1 Swap Essentials - 4L80E SE1-C107387-LTX-A2: 1973-1987 C10/1979-1987 Gen-V Kit with or 4L85E Automatic Transmissions. Provides the highest clearance available for up to 3 dual exhaust system routing. A signature is required on all UPS orders over $750.

Buyer pays return shipping. Designed in CAD to optimize driveling angles reduce vibration and put the most power ground possible. Durable black polyurethane inserts for reduced twist over OEM rubber. Take the hassle out of your next swap with Holley's Swap Essentials Packages.

Kit designed from the ground up for factory fitment LS/LT engine. Depending on your budget, theres multiple levels to choose from; engine and transmission mount packages full mount, exhaust, front accessory drive packages, with savings stack along the way.

part #: se1c107387ltxa2 prices

• $757.12-$815.70

specifications lowerlageen:

• for models: C10, C20, Lt, Blazer
• brand: Holley
• manufacturer part number: SE1-C107387-LTX-A2
• upc: 090127996539

general lowerlageen:

• condition: New
• Auto Permance Parts > Chassis, Suspension Brakes > Lower Kits Parts

payments lowerlageen:

• other
• credit card: Diners-club
• wallet: Apple-pay

offer lowerlageen:

• options: Ship-to-home
• quantity: 1
• started: April 23, 2026
• sold: 0
• availability: In Stock

shipping lowerlageen:

• type: Fixed
• carrier: UPS
• transit: 2-6 Days
• service: UPS Ground
• class: Standard
• cost: $0.00

returns lowerlageen:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

seller lowerlageen:

• # reviews: 90140
• city: USA
• rating: 99.8%