Description
TCI 112500: Professional Overview
The TCI Competition Transmissions 112500 belongs to TCI Auto’s Competition transmission range. It is a remanufactured three-speed automatic transmission developed for the demands associated with drag-racing competition.
TCI Competition transmissions are designed around specialized performance configurations. The supplied product information states that these transmissions are available with full-manual and trans-brake setups and retain no automatic shift features.
The 112500 uses a Mopar bellhousing bolt pattern and reverse shift pattern. Its full-manual valve body provides manual shifting control as part of its competition-oriented configuration.
The transmission has three gears with a 2.45 first gear ratio. It uses a 24-spline input and an 18.375-inch tailshaft with a slip-on yoke.
The transmission case follows an OEM-style configuration and is constructed from aluminum. No built-in transmission shield or flexplate shield is specified.
A trans-brake is included with the 112500. The transmission is not lockup compatible.
TCI states that its Competition transmissions feature special heat-treated races and sprags, high-performance clutches and bands, and improved lubrication. The supplied information also states that TCI blueprints and modifies these transmissions, followed by dyno testing and pressure testing.
The 112500 is sold individually in remanufactured condition.
Compatibility and Competition Applications
The TCI Competition 112500 is designed for buyers seeking a specialized three-speed automatic transmission for drag-racing competition.
Its Mopar bellhousing pattern is an important fitment characteristic. Buyers should confirm that the intended engine and drivetrain correspond with the Mopar mounting configuration before ordering.
The transmission uses a 24-spline input and an 18.375-inch tailshaft. Its output uses a slip-on yoke. These dimensions should be compared with the existing drivetrain when determining physical compatibility.
The 112500 has a 2.45 first gear ratio and three gears. Its reverse shift pattern and full-manual valve body are important characteristics of its competition configuration.
The transmission is not lockup compatible and does not retain automatic shift features according to the supplied TCI Competition transmission description.
The included trans-brake is another significant specification for buyers evaluating competition-oriented automatic transmissions.
The transmission’s intended application should be considered carefully. TCI identifies this product line specifically with drag-racing competition, rather than general-purpose automatic transmission use.
Competition-Oriented Construction and Testing
The TCI Competition Transmissions 112500 incorporates components and preparation processes intended for demanding racing applications.
TCI identifies special heat-treated races and sprags as part of its Competition transmission construction. The product line also uses high-performance clutches and bands together with improved lubrication.
These components form part of TCI’s performance-focused approach to competition transmissions.
TCI also states that its Competition transmissions are blueprinted and modified for maximum performance. The supplied information further identifies dyno testing and pressure testing as part of the preparation process.
The 112500 uses an aluminum OEM-style transmission case. No transmission shield or flexplate shield is built into the unit according to the supplied specifications.
The transmission is supplied in remanufactured condition, making its condition an important consideration when comparing it with new or other remanufactured competition transmissions.
Why Choose the TCI 112500?
The TCI Competition Transmissions 112500 is configured specifically around the requirements of drag-racing competition.
Its full-manual valve body and reverse shift pattern provide a specialized operating configuration, while the included trans-brake adds another important competition-oriented feature.
The transmission’s 2.45 first gear ratio and 24-spline input provide key drivetrain specifications for buyers comparing transmission configurations.
The 18.375-inch tailshaft and slip-on yoke are also important fitment details. Buyers should verify these dimensions against their existing drivetrain before ordering.
The aluminum OEM-style case provides the specified transmission housing configuration.
TCI’s supplied description also highlights heat-treated races and sprags, high-performance clutches and bands, improved lubrication, blueprinting, dyno testing, and pressure testing as characteristics of its Competition transmission range.
Another important consideration is what the transmission does not include. The 112500 does not include a torque converter, flexplate, transmission controller, wiring harness, transmission cooler, transmission fluid, or dipstick.
The speedometer driven gear and its housing are also not included and may need to be purchased separately unless the buyer is replacing the same model and can reuse the existing components.
Who Is the TCI 112500 Designed For?
The TCI Competition 112500 is intended primarily for buyers building or maintaining vehicles for drag-racing competition.
It is particularly relevant to customers who need a Mopar-compatible, three-speed, full-manual transmission with a trans-brake.
Drag racers, performance vehicle builders, racing teams, and professional drivetrain specialists can evaluate this model according to its bellhousing pattern, gearing, input spline, tailshaft dimensions, and valve body configuration.
The 24-spline input, 18.375-inch tailshaft, slip-on yoke, and 2.45 first gear ratio should be checked against the intended drivetrain before purchase.
The trans-brake configuration is also an important selection factor for buyers comparing TCI Competition transmissions.
Customers who need a different gearing, bellhousing pattern, or transmission configuration can compare related TCI Competition Transmissions and other performance automatic transmission collections.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | TCI Auto |
| Manufacturer’s Part Number | 112500 |
| Product Line | TCI Competition Transmissions |
| Part Type | Automatic Transmissions |
| Summit Racing Part Number | TCI-112500 |
| UPC | 788120022996 |
| Condition | Remanufactured |
| Number of Gears | 3 |
| Bellhousing Bolt Pattern | Mopar |
| Transmission Shift Pattern | Reverse |
| Valve Body Style | Full manual |
| First Gear Ratio | 2.45 |
| Torque Converter | Not included |
| Flexplate | Not included |
| Transmission Controller | Not included |
| Wiring Harness | Not included |
| Transmission Cooler | Not included |
| Trans-Brake | Included |
| Lockup Compatible | No |
| Transmission Pan Style | Stock |
| Tailshaft Length | 18.375 in. |
| Yoke Style | Slip-on |
| Input Spline Quantity | 24 |
| Transmission Case Style | OEM |
| Transmission Case Material | Aluminum |
| Transmission Shield Built In | No |
| Flexplate Shield Built In | No |
| Fluid Fill Location | Case |
| Transmission Fluid | Not included |
| Dipstick | Not included |
| Speedometer Driven Gear | Not included |
| Speedometer Gear Housing | Not included |
| Quantity | Sold individually |
| Primary Application | Drag-racing competition |
The table provides a quick reference for customers who need the most important TCI 112500 transmission specifications without reading the complete product description. Key fitment, gearing, valve body, trans-brake, construction, and included-component information can be located immediately.
Speedometer Gear and Housing Information
The TCI Competition 112500 is shipped without the speedometer driven gear or its housing.
This is an important ordering consideration for customers replacing an existing transmission.
If the buyer is replacing the same model of transmission, the existing speedometer driven gear and housing may be reusable. If the components cannot be reused, they must be purchased separately.
Customers should therefore check their existing transmission configuration before completing an order.
Included and Excluded Components
The TCI 112500 includes a trans-brake as part of its competition configuration.
However, the transmission does not include a torque converter, flexplate, transmission controller, wiring harness, transmission cooler, transmission fluid, or dipstick.
The speedometer driven gear and housing are also excluded.
The transmission is sold individually and supplied in remanufactured condition.
These details should be reviewed when planning a complete transmission replacement or racing drivetrain build.
Ordering and Product Support
The TCI Competition Transmissions 112500 is identified by TCI Auto part number 112500 and Summit Racing part number TCI-112500. The supplied UPC is 788120022996.
The unit is sold individually and supplied as a remanufactured transmission.
Before ordering, buyers should verify the Mopar bellhousing pattern, 24-spline input, 18.375-inch tailshaft, slip-on yoke, 2.45 first gear ratio, and full-manual valve body.
The transmission’s trans-brake configuration should also be considered when determining whether it is appropriate for the intended application.
Customers should also account for the excluded speedometer driven gear and housing. These components may be reused from the existing transmission when replacing the same model, otherwise they must be purchased separately.
For customers comparing related TCI Competition transmissions, the appropriate model should be selected according to the vehicle, drivetrain configuration, gearing requirements, and intended competition use.
Frequently Asked Questions
What is the TCI Competition 112500 transmission?
The TCI Competition 112500 is a remanufactured three-speed automatic transmission designed for drag-racing competition. It features a Mopar bellhousing pattern, full-manual valve body, reverse shift pattern, 2.45 first gear ratio, 24-spline input, and an included trans-brake.
Does the TCI 112500 include a trans-brake?
Yes. The TCI Competition 112500 includes a trans-brake. The transmission also uses a full-manual valve body and reverse shift pattern, forming part of its specialized drag-racing configuration.
What bellhousing pattern does the TCI 112500 use?
The TCI 112500 uses a Mopar bellhousing bolt pattern. It also has a 24-spline input, 18.375-inch tailshaft, and slip-on yoke. Buyers should verify these specifications against their existing drivetrain before ordering.
What is the first gear ratio of the TCI 112500?
The TCI Competition 112500 has a 2.45 first gear ratio and three gears. This specification should be considered alongside the vehicle’s drivetrain and intended racing application when comparing different performance automatic transmissions.
Is the TCI Competition 112500 lockup compatible?
No. The supplied specifications identify the TCI 112500 as not lockup compatible. This is an important consideration when comparing transmission configurations and determining whether the unit matches the intended drivetrain.
Does the TCI 112500 include the speedometer gear?
No. The speedometer driven gear and its housing are not included. When replacing the same model, the existing components may be reused if suitable. Otherwise, the speedometer driven gear and housing must be purchased separately.
Does the TCI 112500 include a torque converter?
No. The torque converter is not included with the TCI 112500. The transmission also does not include a flexplate, controller, wiring harness, transmission cooler, transmission fluid, or dipstick. It is sold individually as a remanufactured transmission.
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