Description
Performance Automatic TH400 Transmissions PA40101 – Professional Overview
Performance Automatic TH400 Transmissions PA40101 is part of Performance Automatic’s range of remanufactured TH400 automatic transmissions. The TH400 platform is a 3-speed automatic configuration, and this particular unit combines its established architecture with several performance-focused upgrades.
The transmission uses a Chevy bellhousing bolt pattern and has a forward shift pattern with an automatic/manual valve body. It carries an advertised horsepower rating of 500 and uses a 2.48 first gear ratio.
Performance Automatic starts with selected TH400 cores and applies a rebuilding process focused on improved durability and shift performance. The PA40101 includes heavy-duty clutches, upgraded sprags, improved shift calibration, and a TransGo shift kit installed as part of the transmission.
The result is a remanufactured TH400 intended for buyers who need a performance-oriented automatic transmission while retaining the familiar characteristics of the TH400 platform.
Compatibility and Application Details
Proper fitment is important when selecting a TH400 transmission because drivetrain dimensions and mounting specifications vary between applications. PA40101 uses a Chevy bellhousing bolt pattern, a 30-spline input, a 4.000-inch tailshaft, and a slip-on yoke.
The transmission has a forward shift pattern and an automatic/manual valve body. It is also not lockup compatible, making it appropriate for applications designed around a conventional non-lockup TH400 configuration.
Its 2.48 first gear ratio is another important consideration when evaluating the transmission alongside the vehicle’s rear axle ratio, tire size, and overall drivetrain setup.
The PA40101 is sold individually. The supplied specifications indicate that a torque converter, flexplate, controller, wiring harness, transmission cooler, transmission fluid, and dipstick are not included.
Before ordering, buyers should confirm the complete drivetrain configuration rather than relying only on the transmission model designation.
Construction and Performance Features
Performance Automatic builds this transmission around an OEM-style aluminum case with a black finish. The transmission uses a deep steel pan with a chrome finish, giving the unit a performance-oriented appearance while providing the deeper pan configuration specified for this model.
Internally, the transmission receives heavy-duty clutches and upgraded sprags. These components are part of the performance-oriented rebuild and are intended to improve the transmission’s ability to handle demanding applications.
The PA40101 also comes with a TransGo shift kit installed. Combined with Performance Automatic’s improved shift calibrations, this gives the transmission a more performance-focused hydraulic setup than a basic stock replacement.
Performance Automatic states that its TH400 transmissions are built using quality cores and upgraded with components intended to improve dependability and performance. The completed unit also receives a new pan and drain plug.
What Makes This Transmission a Strong Choice
A replacement TH400 should be evaluated by more than its basic gear count. Input spline configuration, bellhousing pattern, tailshaft length, valve body design, horsepower rating, and internal upgrades all influence whether a transmission is suitable for a particular build.
PA40101 offers several specifications that make it relevant to street and performance applications. The 30-spline input, 2.48 first gear, 4.000-inch tailshaft, and Chevy bellhousing pattern provide important information for fitment evaluation.
The transmission’s internal upgrades are also significant. Heavy-duty clutches, upgraded sprags, improved shift calibration, and the installed TransGo shift kit distinguish this unit from a basic remanufactured TH400.
The non-lockup configuration is equally important. Buyers with a vehicle designed around a conventional TH400 can evaluate this transmission without expecting modern electronic lockup functionality or an electronic transmission controller.
Who This Transmission Is Best For
Performance Automatic TH400 Transmissions PA40101 is best suited to buyers looking for a remanufactured Chevy TH400 transmission for a compatible street or performance vehicle.
It can be considered for:
- Chevrolet-powered street cars
- Performance-oriented vehicle builds
- Applications using a conventional TH400 drivetrain
- Buyers replacing a worn TH400 automatic transmission
- Street vehicles requiring upgraded internal components
- Builds where a TransGo shift kit and heavy-duty clutches are desirable
- Applications requiring a 30-spline input and 4.000-inch tailshaft
It is not the appropriate choice for every vehicle. Applications requiring lockup functionality, a different bellhousing pattern, a different tailshaft configuration, or electronic transmission control should be evaluated separately.
For buyers comparing options, the broader automatic transmissions collection can provide additional configurations for different engines, drivetrains, and performance requirements.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Performance Automatic |
| Manufacturer Part Number | PA40101 |
| Part Type | Automatic Transmission |
| Product Line | Performance Automatic TH400 Transmissions |
| Summit Racing Part Number | PMA-PA40101 |
| UPC | 887753175274 |
| Number of Gears | 3 |
| Bellhousing Bolt Pattern | Chevy |
| Shift Pattern | Forward |
| Valve Body Style | Automatic/Manual |
| Advertised Horsepower Rating | 500 hp |
| Torque Converter | Not included |
| Flexplate | Not included |
| Transmission Controller | Not included |
| Wiring Harness | Not included |
| Transmission Cooler | Not included |
| Trans-Brake | No |
| Lockup Compatible | No |
| Transmission Pan | Deep |
| Pan Material | Steel |
| Pan Finish | Chrome |
| Tailshaft Length | 4.000 in. |
| Yoke Style | Slip-on |
| Input Spline Quantity | 30 |
| First Gear Ratio | 2.48 |
| Transmission Case Style | OEM |
| Case Material | Aluminum |
| Case Finish | Black |
| Transmission Shield | No |
| Flexplate Shield | No |
| Fluid Fill Location | Case |
| Transmission Fluid | Not included |
| Dipstick | Not included |
| Remanufactured | Yes |
| Heavy-Duty Clutches | Included |
| Shift Kit | TransGo shift kit installed |
| Quantity | Sold individually |
Ordering and Fitment Support
Choosing the correct transmission requires matching the unit to the vehicle’s complete drivetrain configuration. Before ordering Performance Automatic TH400 Transmissions PA40101, buyers should verify the Chevy bellhousing pattern, 30-spline input, 4.000-inch tailshaft, slip-on yoke, and non-lockup configuration.
The included equipment should also be considered during the purchase decision. PA40101 is sold individually and does not include a torque converter, flexplate, transmission cooler, controller, wiring harness, fluid, or dipstick according to the supplied specifications.
For buyers comparing transmission options, related TH400 transmissions, performance automatic transmissions, and complementary drivetrain components can help identify a configuration that better matches the vehicle and intended use.
Frequently Asked Questions
What is Performance Automatic TH400 Transmissions PA40101?
Performance Automatic TH400 Transmissions PA40101 is a remanufactured 3-speed automatic transmission with a Chevy bellhousing pattern. It has a 500-horsepower advertised rating, 30-spline input, 2.48 first gear ratio, heavy-duty clutches, upgraded sprags, and an installed TransGo shift kit.
Is PA40101 a lockup transmission?
No. PA40101 is not lockup compatible. It uses a conventional TH400 configuration rather than a lockup-equipped automatic transmission. Buyers should confirm that their vehicle and drivetrain are designed for a non-lockup TH400 before purchasing.
What is the horsepower rating of PA40101?
Performance Automatic lists PA40101 with an advertised horsepower rating of 500 hp. Actual transmission suitability depends on the complete vehicle setup, engine output, drivetrain configuration, intended use, and operating conditions.
Does PA40101 include a torque converter?
No. The supplied specifications indicate that the torque converter is not included. The transmission is sold individually, so buyers should account for the need for a compatible torque converter separately when planning the complete installation.
What type of valve body does this TH400 use?
PA40101 uses an automatic/manual valve body. This configuration provides flexibility for compatible applications that require automatic operation while retaining manual gear-selection capability.
What are the key fitment specifications for PA40101?
Important fitment specifications include a Chevy bellhousing pattern, 30-spline input, 4.000-inch tailshaft, slip-on yoke, and 2.48 first gear ratio. Buyers should compare these specifications with their existing drivetrain before ordering.
What upgrades does this Performance Automatic TH400 include?
The transmission includes heavy-duty clutches, upgraded sprags, improved shift calibrations, and a TransGo shift kit. Performance Automatic also finishes the unit with a new deep pan and drain plug as part of its remanufacturing process.
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