Description
FTI MPG5.5L Powerglide Transmission Overview
The FTI Performance Mud Series Powerglide Level 5.5 Transmission MPG5.5L is designed for serious racing builds that require a strong, purpose-built automatic transmission for high-output competition use.
This unit belongs to the FTI Performance Mud Series Powerglide Level 5.5 product line and is listed under Manufacturer’s Part Number MPG5.5L, Summit Racing Part Number FTI-MPG55L, and UPC 887753816122.
It is built with a Chevy bellhousing bolt pattern, forward shift pattern, and full manual valve body, giving racers direct control over shift operation in demanding mud racing environments.
With an advertised power capacity of 2,200 horsepower, this transmission is intended for extreme builds, including high-power racing combinations using blowers or multi-stage nitrous systems. It is not a basic street replacement transmission; it is a specialized Powerglide racing transmission built for competition-focused use.
This transmission is sold individually and does not include a torque converter, flexplate, transmission controller, wiring harness, cooler, fluid, or dipstick.
Racing Fitment and Common Applications
The FTI MPG5.5L Mud Series Powerglide transmission is intended for Chevy-pattern racing applications requiring a high-strength automatic transmission with Powerglide-style performance, full manual control, and extreme horsepower capacity.
It is best suited for mud racing vehicles, high-horsepower off-road competition builds, and dedicated race vehicles using compatible Chevy bellhousing applications. The listed 2,200 HP rating, trans-brake, deep aluminum pan, SFI-rated case, Vasco input shaft, and 300M output shaft make it a strong choice for aggressive racing setups.
Fitment should be verified before ordering by confirming bellhousing pattern, tailshaft length, yoke style, input shaft style, spline count, converter compatibility, flexplate setup, driveshaft length, shifter compatibility, cooler setup, transmission mount position, fluid fill requirements, and vehicle class rules.
This transmission has an 11.250-inch tailshaft length and uses a slip-on yoke style. It also features a 30-spline input, TH350/400 input shaft style, and 1.80 first gear ratio.
Because race transmissions are highly application-specific, buyers should confirm compatibility with the engine, chassis, converter, shifter, drivetrain, safety equipment, and racing requirements before purchase.
Extreme Mud Racing Performance
The FTI Performance Mud Series Powerglide Level 5.5 Transmission is built for competition environments where power delivery, strength, and consistency matter.
The advertised 2,200 horsepower rating makes this unit suitable for extreme racing combinations that can quickly overload lighter-duty transmissions. Mud racing places unique stress on drivetrain components because traction, wheel speed, shock loading, and throttle changes can vary rapidly.
The Powerglide platform is valued in many racing applications for its simplicity, strength, and efficient power delivery. This FTI Level 5.5 version adds serious internal upgrades and an aftermarket case to support extreme use.
The transmission includes a full manual valve body, allowing the driver to control gear selection directly. The forward shift pattern provides a familiar shift sequence for compatible racing setups.
The included trans-brake is a major performance feature for competition launches. It allows the vehicle to build launch force while holding the transmission, helping support consistent starting-line performance in appropriate racing applications.
Valve Body, Shift Pattern, and Gear Ratio
This FTI MPG5.5L transmission uses a full manual valve body, meaning gear changes are controlled by the driver rather than by automatic hydraulic shift scheduling.
The forward shift pattern is suited for compatible race shifters and driver preference. Before ordering, buyers should confirm that the shifter, linkage, cable setup, and vehicle layout match the transmission’s shift pattern.
The transmission is listed with 1 gear and a 1.80 first gear ratio. Buyers should review the listed specification carefully and confirm whether this exact one-gear MPG5.5L configuration is the correct model for their racing class and drivetrain setup.
FTI Mud Series Powerglide Level 5.5 transmissions are available in different configurations, including one-gear or two-gear models and standard or shorty lengths. This specific product listing should be matched by part number, tailshaft length, gear setup, and racing application.
Input Shaft, Output Shaft, and Internal Strength
One of the most important strength features of the FTI Mud Series Powerglide Level 5.5 MPG5.5L is the Vasco ring-less input shaft. The listing specifies a 30-spline input shaft using Vasco material with a TH350/400 input shaft style.
The input shaft is listed as a ring-less design, which is an important race-build detail. Buyers should confirm converter compatibility with this input shaft configuration before purchase.
The transmission also includes a 300M output shaft, adding strength in a critical drivetrain area. High-power mud racing can create severe shock loads, so output shaft material and design are important for durability.
The billet steel clutch hub adds additional internal strength. The broader Mud Series Level 5.5 description also notes all-new internal parts, including a billet aluminum valve body, 10-clutch drum, and straight-cut gear planetary options.
Together, these features support the transmission’s high horsepower rating and race-focused durability.
Case, Pan, and Safety Certification
This transmission uses an aftermarket aluminum case with a natural finish. The case is listed as SFI 4.1 / 30.1 rated, which is an important specification for racing safety compliance.
The transmission does not include a built-in transmission shield or built-in flexplate shield. Buyers should confirm whether additional safety shields are required for their racing class, vehicle setup, or sanctioning body rules.
The transmission pan is a deep aluminum pan with a natural finish. A deep pan helps increase fluid capacity and support improved fluid temperature control during demanding competition use.
The fluid fill location is listed as case fill. Transmission fluid is not included, and the dipstick is not included, so buyers should plan for the correct fluid, dipstick, cooler lines, and service components during installation.
Included and Not Included Components
The FTI Performance MPG5.5L Powerglide transmission is sold individually and includes the transmission assembly with the listed internal and external specifications.
It includes key race features such as the full manual valve body, trans-brake, deep aluminum pan, aftermarket aluminum case, Vasco ring-less input shaft, 300M output shaft, and billet steel clutch hub.
The product listing states that the following components are not included: torque converter, flexplate, transmission controller, wiring harness, transmission cooler, transmission fluid, and dipstick.
This transmission is also not lockup compatible. Buyers should select a compatible torque converter, flexplate, cooler, fluid, shifter, driveshaft/yoke setup, and safety equipment based on the complete vehicle combination.
Because this is a race transmission, ordering the correct supporting components is just as important as selecting the transmission itself.
Key Benefits for Racing Builders
The FTI Performance Mud Series Powerglide Level 5.5 MPG5.5L gives serious race builders a purpose-built transmission for extreme horsepower mud racing applications.
The first major benefit is power capacity. With an advertised 2,200 HP rating, this transmission is built for aggressive racing combinations where standard performance transmissions are not enough.
The second benefit is internal strength. Features such as the Vasco ring-less input shaft, 300M output shaft, billet steel clutch hub, all-new internal parts, and race-focused construction support high-load use.
The third benefit is racing control. The full manual valve body, forward shift pattern, and trans-brake give drivers the control needed in serious competition vehicles.
The fourth benefit is safety-focused construction. The SFI 4.1 / 30.1 rating and aftermarket aluminum case support competition readiness when matched with the proper safety components.
Who This Transmission Is Best For
The FTI MPG5.5L Mud Series Powerglide Level 5.5 Transmission is best for experienced racing builders, mud racing teams, high-horsepower off-road competitors, professional fabricators, and performance shops building Chevy-pattern race vehicles.
It is especially suited for competition builds requiring a 2,200 HP-rated Powerglide transmission, full manual valve body, trans-brake, deep aluminum pan, Vasco input shaft, 300M output shaft, and SFI-rated aftermarket case.
This transmission is a strong choice for blower and multi-stage nitrous racing combinations where drivetrain strength is a priority.
It is not intended as a basic replacement for a street vehicle or stock application. Buyers should confirm race class rules, converter selection, cooling requirements, driveshaft setup, yoke compatibility, flexplate choice, transmission mount position, and safety requirements before ordering.
Technical Details and Included Specifications
The FTI Performance Mud Series Powerglide Level 5.5 Transmission MPG5.5L is a high-output automatic racing transmission with a Chevy bellhousing bolt pattern, full manual valve body, trans-brake, and 2,200 HP advertised rating.
| Specification | Details |
|---|---|
| Product Type | Automatic racing transmission |
| Brand | FTI Performance |
| Product Line | FTI Performance Mud Series Powerglide Level 5.5 Transmissions |
| Manufacturer Part Number | MPG5.5L |
| Summit Racing Part Number | FTI-MPG55L |
| UPC | 887753816122 |
| Bellhousing Bolt Pattern | Chevy |
| Number of Gears | 1 |
| Shift Pattern | Forward |
| Valve Body Style | Full manual |
| Advertised Horsepower Rating | 2,200 HP |
| Torque Converter Included | No |
| Flexplate Included | No |
| Transmission Controller Included | No |
| Wiring Harness Included | No |
| Transmission Cooler Included | No |
| Trans-Brake Included | Yes |
| Lockup Compatible | No |
| Transmission Pan Style | Deep |
| Transmission Pan Material | Aluminum |
| Transmission Pan Finish | Natural |
| Tailshaft Length | 11.250 in. |
| Yoke Style | Slip-on |
| Input Spline Quantity | 30 |
| Input Shaft Material | Vasco |
| Input Shaft Style | TH350/400 |
| Input Shaft Design | Ring-less design |
| Output Shaft | 300M output shaft included |
| First Gear Ratio | 1.80 |
| Clutch Hub | Billet steel |
| Transmission Case Style | Aftermarket |
| Transmission Case Material | Aluminum |
| Transmission Case Finish | Natural |
| Transmission Shield Built In | No |
| Flexplate Shield Built In | No |
| Fluid Fill Location | Case |
| Transmission Fluid Included | No |
| Dipstick Included | No |
| SFI Rating | SFI 4.1 / 30.1 |
| Remanufactured | No |
| Quantity | Sold individually |
Fitment Support and Ordering Notes
Before ordering the FTI Performance MPG5.5L Mud Series Powerglide transmission, buyers should confirm the complete racing setup. Important details include Chevy bellhousing pattern, converter compatibility, flexplate selection, input shaft style, 30-spline configuration, yoke style, tailshaft length, driveshaft length, shifter compatibility, transmission mount location, cooler requirements, fluid requirements, and safety equipment.
This transmission does not include a torque converter, flexplate, controller, wiring harness, cooler, fluid, or dipstick. These items should be selected separately based on the engine combination, vehicle weight, tire size, gearing, converter stall requirements, and race use.
The transmission is listed as not lockup compatible, so buyers should choose a non-lockup converter setup.
Because the transmission includes a trans-brake and is rated for extreme power, professional installation and correct supporting components are strongly recommended.
Customers can also compare this product with other FTI Powerglide transmissions, Chevy racing transmissions, compatible torque converters, flexplates, transmission coolers, shifters, driveshaft parts, yokes, safety shields, transmission fluid, and installation hardware when planning a complete race drivetrain.
Frequently Asked Questions
What is the FTI MPG5.5L transmission built for?
The FTI Performance Mud Series Powerglide Level 5.5 MPG5.5L is built for extreme mud racing and high-horsepower Chevy-pattern race applications. It is rated for up to 2,200 HP.
Does this transmission include a torque converter?
No. The torque converter is not included. Buyers must select a compatible converter based on the vehicle, engine combination, power level, race use, and input shaft requirements.
Does the FTI MPG5.5L include a trans-brake?
Yes. This transmission includes a trans-brake, making it suitable for compatible racing applications that require controlled launch performance.
What input shaft does this transmission use?
This transmission uses a 30-spline Vasco input shaft with a TH350/400 input shaft style. The listing notes that the input shaft is a ring-less design.
Does this transmission include a 300M output shaft?
Yes. The supplied notes state that this transmission includes a 300M output shaft, adding strength for high-load racing applications.
Is this transmission lockup compatible?
No. The listing states that this transmission is not lockup compatible. Buyers should choose the correct non-lockup converter and supporting components.
Is this a remanufactured transmission?
No. The product specification lists Remanufactured: No. This is an FTI Performance Mud Series Powerglide Level 5.5 racing transmission sold individually.
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