Summit Racing™ Performance Transmissions SUM-700382

Description

Summit Racing™ Performance Transmissions SUM-700382 – Professional Overview

The Summit Racing™ Performance Transmissions SUM-700382 is a high-performance automatic transmission developed for applications where strength, manual control, and consistent shifting are important. It is part of the Summit Racing Performance Transmissions range and is designed around a traditional 3-speed automatic configuration with a Chevrolet bellhousing pattern.

This unit is remanufactured and incorporates a selection of performance-oriented components rather than relying solely on standard replacement specifications. Its combination of a high-volume pump, performance clutches and steels, heavy-duty internal components, and recalibrated valve body makes it suitable for demanding performance builds.

The transmission uses a full-manual valve body, meaning its operating characteristics are intended for applications where the driver controls gear selection rather than relying on conventional automatic shifting. The integrated trans-brake further positions this transmission toward performance and drag-racing applications.

With an advertised 1,200 horsepower rating, the SUM-700382 is intended for considerably more demanding applications than an ordinary replacement automatic transmission. However, actual suitability depends on the engine combination, vehicle weight, gearing, tire setup, intended use, and overall drivetrain configuration.

Compatibility and Application

The SUM-700382 uses a Chevy bellhousing bolt pattern and is built around a 3-speed automatic transmission configuration. It has a 30-spline input and a 4-inch tailshaft with a slip-on yoke arrangement.

The unit uses a 2.48:1 first gear ratio, providing the gearing characteristics associated with this transmission configuration. Its forward and reverse gear functions are controlled through the full-manual valve body, making it particularly relevant to performance vehicles where deliberate gear selection is preferred.

The transmission can accept aftermarket bellhousings that bolt to the front pump, according to the supplied product information. This can provide additional flexibility when integrating the transmission into a modified drivetrain, although the specific bellhousing and vehicle application should always be confirmed before ordering.

The SUM-700382 does not include a torque converter, flexplate, transmission controller, wiring harness, cooler, fluid, or dipstick. These omissions are important when planning a complete drivetrain installation because the transmission itself is sold as an individual unit.

Construction and Performance Components

The transmission incorporates several components intended to improve its ability to handle demanding performance applications.

A 300M input shaft provides a high-strength input component, while the billet steel clutch hub supports the internal clutch assembly. The transmission also uses a billet forward clutch hub, adding another performance-focused component to the drivetrain.

Inside the transmission, the supplied specifications identify a 36-element Pro-Mod sprag, a billet 6061 coated aluminum drum, and high-performance clutches and steels. These components are intended to support the transmission’s performance-oriented operating environment.

Hydraulic performance is supported by a high-volume pump and a recalibrated full-manual trans-brake valve body. Together, these components form the basis of the transmission’s performance configuration.

The external case uses an aluminum construction with a black finish, while the deep aluminum transmission pan provides additional fluid capacity compared with a standard shallow pan configuration.

Why This Transmission Is Built for Performance

One of the defining characteristics of the SUM-700382 is its combination of manual control and trans-brake functionality. Rather than being configured as a conventional street automatic, it is designed around the requirements of performance-oriented drivetrain applications.

The billet aluminum internal solenoid trans-brake is particularly relevant to drag-racing builds where controlled launch characteristics are required. The full-manual valve body also allows the driver to manage gear selection directly.

The transmission’s internal component package provides another important advantage for performance builders. The 300M input shaft, billet components, Pro-Mod sprag, performance clutches and steels, and high-volume pump are all specified as part of the unit’s construction.

The advertised 1,200 horsepower rating also places this model toward the higher-output end of performance automatic transmissions. Buyers should nevertheless evaluate the complete drivetrain rather than relying on the horsepower rating alone when determining suitability.

Who Should Choose This Transmission

The SUM-700382 is best suited to performance-oriented vehicle owners, drag racers, engine builders, and drivetrain specialists who need a manually controlled 3-speed automatic transmission with an integrated trans-brake.

It can be particularly relevant for high-output Chevrolet-based builds where a 30-spline input, 4-inch tailshaft, and Chevrolet bellhousing pattern match the existing drivetrain requirements.

This transmission is less appropriate for buyers looking for a conventional automatic replacement with normal automatic shift operation. Its full-manual valve body and trans-brake configuration are characteristics that should be considered carefully before purchase.

For a complete drivetrain project, buyers can also explore related automatic transmissions, performance drivetrain components, torque converters, flexplates, transmission coolers, and other transmission accessories to ensure the complete system is correctly matched.

Technical Specifications

Installation and Fitment Considerations

Correct fitment is essential when selecting a performance automatic transmission. The SUM-700382 uses a Chevy bellhousing pattern, 30-spline input, and 4-inch tailshaft, so these dimensions should be compared with the vehicle’s existing drivetrain before ordering.

The transmission does not include a torque converter or flexplate. Buyers should therefore ensure that the selected converter and flexplate are compatible with the engine, transmission, crankshaft configuration, and intended application.

Because this is a full-manual transmission with a trans-brake, its control requirements differ from those of a conventional automatic transmission. The drivetrain should be configured around the transmission’s intended operating characteristics.

The transmission also does not include a transmission cooler, fluid, or dipstick. These items should be accounted for as part of the overall installation and vehicle preparation.

Quality and Testing

Summit Racing Performance Transmissions are described as being built with all-new high-performance components, including performance clutches and steels, high-quality seals and gaskets, a high-volume pump, and a recalibrated full-manual trans-brake valve body.

The supplied product information also identifies a heavy-duty sun shell and deep aluminum pan among the transmission’s performance components. These features reflect the focus on durability and performance rather than a basic stock replacement configuration.

For buyers selecting a remanufactured performance transmission, component specifications and intended application are important considerations. The SUM-700382 provides a clearly defined performance configuration for builders who require manual control and trans-brake functionality.

Ordering Confidence and Support

Before purchasing the SUM-700382, verify the vehicle’s bellhousing pattern, input spline count, tailshaft length, yoke configuration, gear ratio, and intended transmission application. These specifications are particularly important when replacing an existing transmission or upgrading a performance drivetrain.

The transmission is sold individually, so the buyer should also account for the components that are not included, particularly the torque converter, flexplate, cooler, fluid, and dipstick.

For a performance build, matching the transmission to the engine output, vehicle weight, rear-end gearing, tire combination, and intended driving environment is essential. If you are uncertain about compatibility, professional drivetrain guidance is recommended before ordering.

Frequently Asked Questions

What is the horsepower rating of the SUM-700382?

The Summit Racing SUM-700382 carries an advertised 1,200 horsepower rating. It is designed as a performance-oriented 3-speed automatic transmission with upgraded internal components, including a 300M input shaft, billet components, high-performance clutches and steels, and a 36-element Pro-Mod sprag.

Does the SUM-700382 include a torque converter?

No. The SUM-700382 is sold without a torque converter. Buyers must select a compatible converter separately based on the engine, transmission configuration, vehicle, and intended performance application.

Does this transmission have a trans-brake?

Yes. The SUM-700382 includes a billet aluminum internal solenoid trans-brake integrated into its performance configuration. This feature makes the transmission particularly relevant to drag-racing and other applications requiring controlled launch operation.

What bellhousing pattern does the SUM-700382 use?

The transmission uses a Chevy bellhousing bolt pattern. The supplied specifications also state that it will accept aftermarket bellhousings that bolt to the front pump. Exact vehicle and bellhousing compatibility should still be confirmed before purchase.

What type of valve body does this transmission use?

The SUM-700382 uses a full-manual valve body with a recalibrated trans-brake configuration. It is therefore intended for applications where manual gear selection and performance-oriented transmission control are required rather than conventional automatic shifting.

What is the first gear ratio of the SUM-700382?

The transmission has a 2.48:1 first gear ratio. It uses three forward/reverse operating positions within its 3-speed automatic configuration and is designed around performance drivetrain applications.

Is the SUM-700382 remanufactured?

Yes. The SUM-700382 is identified as a remanufactured transmission. Its specifications include performance-oriented replacement and upgraded components such as high-performance clutches and steels, a high-volume pump, billet components, and a 36-element Pro-Mod sprag.