TCI 6x 6-Speed GM 4L80E Automatic Transmission Packages 271701P36

Description

Product Overview

The TCI 6x 6-Speed GM 4L80E Automatic Transmission Packages 271701P36 is a performance-focused automatic transmission package designed for builders who want the strength of the GM 4L80E platform with six forward gears and a complete supporting component package. This unit is part of the TCI 6x 6-Speed GM 4L80E Automatic Transmission Packages line and is built for compatible pro touring, street, and race applications where a properly matched 6-speed automatic transmission is required.

This transmission package is identified by Manufacturer’s Part Number 271701P36, Summit Racing Part Number TCI-271701P36, and UPC 788120157438. These identifiers help Gen III Hemi builders, Mopar performance shops, pro touring builders, race teams, custom vehicle shops, transmission installers, mechanics, and drivetrain specialists confirm the correct TCI package before ordering.

The transmission features a 6-speed configuration, Mopar bellhousing bolt pattern, forward shift pattern, and automatic valve body. It is listed with an advertised horsepower rating of 850 horsepower, making it a strong option for high-performance builds when matched correctly to the engine, converter strategy, flexplate, vehicle weight, axle ratio, tire size, cooling system, and intended use.

The package includes the Gen III Hemi bellhousing, flexplate, EZ-TCU transmission controller and harnesses, TCI Outlaw shifter, transmission cooler, dipstick, and 12 qt. of transmission fluid. This makes the kit more complete than a transmission-only purchase and gives builders several key installation components in one package.

The torque converter is not included, so converter selection should be confirmed carefully before ordering. The transmission is also listed as not lockup compatible, so buyers should verify converter requirements and operating expectations before installation.

The TCI 6x gear ratios are listed as 2.97, 2.31, 1.57, 1.18, 1.00, and 0.75, giving the package six forward gears for quicker acceleration and improved cruising performance when properly configured.

This transmission uses a stock chrome steel pan, 30-spline input, 2.97 first gear ratio, OEM-style natural aluminum case, and case-fill location. It is listed as remanufactured and sold as a kit.

Fitment and Application Details

The TCI 271701P36 6x 6-Speed GM 4L80E automatic transmission package should be matched carefully to the intended Gen III Hemi / Mopar application before ordering. Automatic transmission fitment can vary by engine platform, bellhousing configuration, flexplate requirements, converter setup, electronics, transmission controller, wiring harness, cooler routing, shifter compatibility, mount location, crossmember position, driveshaft length, yoke style, and fluid requirements.

This package includes a Gen III Hemi bellhousing, which is one of the most important confirmed fitment details. Buyers should confirm the exact Gen III Hemi engine application, crankshaft/flexplate requirements, converter bolt pattern, starter compatibility, bellhousing fitment, transmission tunnel clearance, and drivetrain layout before purchase.

Important fitment details to verify include vehicle year, make, model, engine platform, Gen III Hemi compatibility, Mopar bellhousing bolt pattern, GM 4L80E platform compatibility, flexplate compatibility, converter requirements, converter bolt pattern, crankshaft pilot fitment, starter compatibility, transmission controller requirements, EZ-TCU controller and harness setup, electronic connector compatibility, shifter compatibility, TCI Outlaw shifter installation, cooler line routing, transmission cooler mounting, fluid requirements, dipstick setup, transmission mount location, crossmember position, driveshaft length, yoke compatibility, and installation hardware.

The flexplate is included, but buyers should still confirm that the supplied flexplate matches the exact engine, crankshaft, balance requirement, starter setup, and converter selection.

The torque converter is not included, so buyers must select the correct converter for the engine output, camshaft profile, vehicle weight, axle ratio, tire size, intended driving style, and racing or street use.

The transmission controller and wiring harnesses are included, specifically the EZ-TCU transmission controller and harnesses. Buyers should confirm installation requirements, calibration setup, throttle-position input, speed signal, wiring routing, and compatibility with the intended vehicle.

The transmission cooler is included, but buyers should confirm cooler mounting location, line routing, fittings, airflow, and cooling capacity for the intended use.

For a complete installation, additional components may be required, including a torque converter, cooler fittings, cooler lines, transmission mount, crossmember hardware, driveshaft/yoke components, shifter cable or linkage parts, wiring accessories, sensors, and vehicle-specific installation hardware.

Build Quality and Reliability

The TCI 6x 6-Speed GM 4L80E Automatic Transmission Packages 271701P36 is built for buyers who want a strong, versatile 6-speed automatic transmission package based on the proven GM 4L80E automatic platform. TCI describes the 6x 6-speed GM 4L80E packages as aftermarket 6-speed automatic transmissions capable of handling 850 horsepower.

The six forward gear ratios—2.97, 2.31, 1.57, 1.18, 1.00, and 0.75—support strong acceleration and improved cruising performance when properly matched to the vehicle.

The package includes a Gen III Hemi bellhousing, which gives this specific part number strong value for compatible Hemi/Mopar applications.

The included EZ-TCU transmission controller and harnesses support electronic transmission control and make the package more complete for builders planning a custom installation.

The included TCI Outlaw shifter gives the kit additional performance-focused value for street, pro touring, and race applications.

The included transmission cooler, dipstick, and 12 qt. of fluid help support installation planning, though buyers should still confirm exact routing, fittings, fluid level procedure, and cooling needs.

The 850 horsepower rating, 30-spline input, OEM aluminum case, and compact design make this package appealing for pro touring, street, and race vehicles when proper fitment and supporting components are confirmed.

What Makes This Transmission Package a Strong Choice

The TCI 271701P36 6x 6-Speed GM 4L80E automatic transmission package is a strong choice for buyers who need a 6-speed automatic transmission kit for compatible Gen III Hemi / Mopar applications.

The 850 horsepower rating gives the package strong performance appeal.

The six forward gears support improved acceleration and cruising performance compared with fewer-gear automatic setups.

The included Gen III Hemi bellhousing makes this part number especially valuable for compatible Mopar/Hemi builds.

The included EZ-TCU transmission controller and harnesses support electronic-control planning.

The included TCI Outlaw shifter adds performance-focused kit value.

The included flexplate, transmission cooler, dipstick, and 12 qt. transmission fluid make this a more complete package than a transmission-only option.

The exact 271701P36 manufacturer part number, TCI-271701P36 Summit Racing part number, and UPC 788120157438 support accurate product identification before ordering.

Ideal Buyers and Use Cases

The TCI 6x 6-Speed GM 4L80E Automatic Transmission Packages 271701P36 is ideal for Gen III Hemi builders, Mopar performance builders, pro touring builders, street machine builders, race teams, custom vehicle shops, mechanics, transmission installers, restoration builders, service departments, and drivetrain specialists who need a compatible 6-speed automatic transmission package.

It is suitable for compatible applications requiring a GM 4L80E-based 6-speed transmission, Mopar bellhousing bolt pattern, included Gen III Hemi bellhousing, included flexplate, included EZ-TCU controller and harnesses, included TCI Outlaw shifter, included transmission cooler, included dipstick, and 850 horsepower rating.

This product is useful for Gen III Hemi swaps, Mopar street machines, pro touring builds, performance cruisers, race vehicles, restomod projects, and custom drivetrain installations where a properly matched 6-speed automatic transmission package is required.

It is also a practical choice for professional builders confirming required supporting components such as the torque converter, cooler line fittings, transmission mount, crossmember, driveshaft/yoke setup, shifter installation, wiring, controller calibration, sensors, and vehicle-specific installation hardware.

The best buyer for this transmission package is someone who can confirm the Gen III Hemi fitment, converter requirements, flexplate compatibility, EZ-TCU setup, cooler routing, shifter installation, transmission mount location, and driveline layout before ordering.

Technical Specifications

Ordering Support and Fitment Guidance

Before ordering the TCI 6x 6-Speed GM 4L80E Automatic Transmission Packages 271701P36, confirm that the kit matches your Gen III Hemi/Mopar application, converter needs, vehicle layout, electronic-control setup, and driveline requirements.

Important details to verify include vehicle year, make, model, engine platform, Gen III Hemi compatibility, Mopar bellhousing bolt pattern, GM 4L80E-based TCI 6x compatibility, flexplate compatibility, torque converter requirements, converter bolt pattern, crankshaft pilot fitment, starter fitment, EZ-TCU controller and harness setup, electronic connector requirements, throttle-position input, speed signal, shifter installation, TCI Outlaw shifter compatibility, transmission cooler routing, cooler fittings, fluid requirements, dipstick setup, transmission mount location, crossmember position, driveshaft length, yoke setup, and installation hardware.

This kit includes the Gen III Hemi bellhousing, flexplate, EZ-TCU transmission controller and harnesses, TCI Outlaw shifter, transmission cooler, dipstick, and 12 qt. of transmission fluid. It does not include the torque converter, and it is listed as not lockup compatible.

Our team can help confirm compatibility using the 271701P36 part number, engine details, Gen III Hemi setup, vehicle information, converter requirements, controller setup, shifter installation needs, and drivetrain layout before ordering.

Frequently Asked Questions

What is the TCI 271701P36 transmission package?

The TCI 271701P36 is a 6-speed GM 4L80E-based automatic transmission package with a Mopar bellhousing bolt pattern and included Gen III Hemi bellhousing. It is rated for 850 horsepower and sold as a kit.

How many gears does this transmission have?

This transmission package has 6 forward gears.

What are the gear ratios?

The listed gear ratios are 2.97, 2.31, 1.57, 1.18, 1.00, and 0.75.

What engine application is this package built around?

The notes state that this package includes a Gen III Hemi bellhousing, making it important for compatible Gen III Hemi/Mopar applications. Buyers should confirm exact engine and vehicle fitment before ordering.

Does this kit include a torque converter?

No. The torque converter is not included. Buyers should select the correct converter for the engine output, vehicle weight, axle ratio, tire size, and intended use.

Does this kit include a flexplate?

Yes. The flexplate is included.

Does this kit include a controller and wiring harness?

Yes. The package includes the EZ-TCU transmission controller and harnesses.

Does this kit include a shifter?

Yes. The notes state that this package includes a TCI Outlaw shifter.

Does this kit include a transmission cooler?

Yes. The transmission cooler is included.

Does this kit include transmission fluid and a dipstick?

Yes. This kit includes 12 qt. of transmission fluid and a dipstick.

Is this transmission lockup compatible?

No. This transmission package is listed as not lockup compatible.

What horsepower rating does this package have?

This transmission package has an advertised horsepower rating of 850 horsepower.

Is this transmission remanufactured?

Yes. This transmission package is listed as remanufactured.

Is this a complete installation kit?

This kit includes many major components, including the transmission, Gen III Hemi bellhousing, flexplate, EZ-TCU controller and harnesses, TCI Outlaw shifter, transmission cooler, dipstick, and fluid. Buyers should still confirm torque converter requirements, cooler fittings, mount, crossmember, driveshaft/yoke setup, and vehicle-specific installation hardware.

Who is this transmission package best for?

This package is best for Gen III Hemi builders, Mopar performance builders, pro touring builders, street machine builders, race teams, custom vehicle shops, transmission installers, and drivetrain specialists who need a compatible TCI 6x 6-speed 4L80E-based automatic transmission package with included control, cooling, shifter, and Hemi bellhousing components.