Description
Product Overview
The Gearstar Performance Transmission Automatic Transmissions GS4R70W3L3 is a performance-focused automatic transmission listed as a Ford 4R70W two-wheel-drive 4-speed overdrive automatic transmission. It includes a small block Ford bellhousing and a 3-bolt starter configuration, making it a specialized transmission choice for compatible Ford drivetrain builds.
This transmission is identified by Manufacturer’s Part Number GS4R70W3L3 and Summit Racing Part Number GES-GS4R70W3L3. These identifiers help Ford performance builders, mechanics, restoration shops, custom vehicle shops, transmission installers, service departments, street-machine builders, and drivetrain specialists confirm the correct Gearstar transmission before ordering.
The Ford 4R70W platform gives buyers an electronic overdrive automatic transmission foundation for compatible rear-wheel-drive Ford applications. Its 4-speed overdrive design supports street drivability and cruising performance when matched correctly with the right converter, rear gear, tire size, electronics, and vehicle setup.
The two-wheel-drive detail is important for driveline compatibility. Buyers should confirm that the vehicle requires a 2WD transmission layout and does not require a 4WD output or transfer case configuration.
The small block Ford bellhousing and 3-bolt starter details are key fitment points. These should be verified against the exact engine, starter, flexplate, converter, and chassis combination before purchase.
Because the provided product details are limited, buyers should confirm all included components before ordering, including torque converter inclusion, flexplate inclusion, controller inclusion, wiring harness inclusion, cooler inclusion, fluid inclusion, dipstick inclusion, yoke requirements, sensors, and installation hardware.
Fitment and Application Details
The Gearstar GS4R70W3L3 4R70W automatic transmission should be matched carefully to the intended Ford application before ordering. Automatic transmission fitment can vary by vehicle year, engine platform, bellhousing configuration, starter type, flexplate, converter setup, electronic-control system, transmission mount, crossmember position, driveshaft length, yoke style, cooler routing, and fluid requirements.
This transmission is listed as a Ford 4R70W 2WD 4-speed overdrive automatic transmission with a small block Ford bellhousing and 3-bolt starter. Buyers should confirm the exact small block Ford engine application, crankshaft/flexplate requirements, converter bolt pattern, starter compatibility, electronic-control requirements, and 2WD driveline configuration before purchase.
Important fitment details to verify include vehicle year, make, model, engine platform, small block Ford bellhousing compatibility, 3-bolt starter requirement, Ford 4R70W transmission compatibility, 2WD drivetrain layout, torque converter requirements, flexplate compatibility, converter bolt pattern, crankshaft pilot fitment, transmission controller requirements, wiring harness requirements, electronic connector compatibility, throttle-position input, speed signal compatibility, lockup-control setup, transmission mount location, crossmember position, driveshaft length, yoke requirements, shifter compatibility, cooler line routing, fluid specifications, dipstick setup, and installation hardware.
Because the 4R70W is an electronically controlled overdrive automatic transmission, buyers should confirm controller, wiring, sensor, throttle-position, speed-signal, and lockup-control requirements before installation.
The exact included components should be confirmed before purchase. Buyers should verify whether the transmission includes the torque converter, flexplate, controller, wiring harness, cooler, cooler lines, fluid, dipstick, yoke, mount, or other installation parts.
For a complete installation, additional components may be required, including a torque converter, flexplate, transmission controller, wiring harness, cooler, cooler lines, transmission fluid, dipstick, shifter components, transmission mount, crossmember hardware, driveshaft/yoke components, sensors, seals, and vehicle-specific installation hardware.
Build Quality and Reliability
The Gearstar Performance Transmission GS4R70W3L3 is built for buyers who need a Level 3 Ford 4R70W automatic transmission for compatible small block Ford applications. Its combination of a 4R70W platform, 2WD configuration, 4-speed overdrive design, small block Ford bellhousing, and 3-bolt starter makes it especially relevant for Ford performance builds, restorations, and custom drivetrain projects.
The Level 3 designation gives this transmission strong appeal for buyers looking for a performance-oriented build level rather than a basic replacement unit.
The 4-speed overdrive configuration supports strong street drivability and cruising performance when matched correctly with the right torque converter, controller, rear gear, tire size, and vehicle weight.
The small block Ford bellhousing and 3-bolt starter configuration give this transmission important application-specific value, but those details must be confirmed carefully before installation.
Because this is a specialized automatic transmission, buyers should confirm converter selection, flexplate compatibility, starter fitment, electronic controls, cooler setup, shifter compatibility, transmission mount, crossmember, driveshaft length, yoke requirements, and fluid type before installation.
What Makes This Transmission a Strong Choice
The Gearstar Performance Transmission GS4R70W3L3 is a strong choice for buyers who need a Ford 4R70W 4-speed overdrive automatic transmission for compatible small block Ford applications.
The 4R70W platform gives builders a Ford electronic overdrive automatic transmission foundation.
The Level 3 build designation makes it appealing for performance-focused applications.
The 2WD configuration helps match this transmission to compatible rear-wheel-drive driveline layouts.
The small block Ford bellhousing is a key fitment feature for compatible Ford engine applications.
The 3-bolt starter detail helps buyers narrow compatibility before ordering.
The 4-speed overdrive setup supports both performance driving and cruising when properly configured.
The exact GS4R70W3L3 manufacturer part number and GES-GS4R70W3L3 Summit Racing part number support accurate product identification before purchase.
Ideal Buyers and Use Cases
The Gearstar Performance Transmission Automatic Transmissions GS4R70W3L3 is ideal for small block Ford builders, Ford performance shops, restoration builders, custom vehicle shops, mechanics, transmission installers, street-machine builders, service departments, and drivetrain specialists who need a compatible 4R70W overdrive automatic transmission.
It is suitable for compatible applications requiring a Ford 4R70W, two-wheel-drive configuration, 4-speed overdrive design, small block Ford bellhousing, 3-bolt starter, and Level 3 transmission build.
This product is useful for Ford performance builds, small block Ford projects, restomods, street machines, rear-wheel-drive drivetrain projects, custom installations, and vehicles where electronic overdrive transmission control is required.
It is also a practical choice for professional installers confirming required supporting components such as the torque converter, flexplate, controller, wiring harness, cooler, cooler lines, transmission fluid, dipstick, sensors, starter fitment, mount, crossmember, driveshaft/yoke setup, shifter compatibility, and installation hardware.
The best buyer for this transmission is someone who can confirm the small block Ford engine fitment, 3-bolt starter requirement, 4R70W electronic-control requirements, 2WD driveline layout, converter setup, flexplate requirements, and supporting installation components before ordering.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Gearstar Performance Transmission Automatic Transmissions GS4R70W3L3 |
| Brand | Gearstar Performance Transmission |
| Manufacturer’s Part Number | GS4R70W3L3 |
| Part Type | Automatic Transmissions |
| Summit Racing Part Number | GES-GS4R70W3L3 |
| Transmission Platform | Ford 4R70W |
| Transmission Type | Automatic |
| Number of Gears | 4 |
| Overdrive | Yes |
| Drivetrain Application | Two-wheel drive / 2WD |
| Bellhousing Application | Small block Ford bellhousing |
| Starter Configuration | 3-bolt starter |
| Build Level | Level 3 |
| Torque Converter Included | Confirm before ordering |
| Flexplate Included | Confirm before ordering |
| Transmission Controller Included | Confirm before ordering |
| Wiring Harness Included | Confirm before ordering |
| Transmission Cooler Included | Confirm before ordering |
| Transmission Fluid Included | Confirm before ordering |
| Dipstick Included | Confirm before ordering |
| Lockup Compatible | Confirm before ordering |
| Valve Body Style | Confirm before ordering |
| Shift Pattern | Confirm before ordering |
| Pan Style | Confirm before ordering |
| Case Material | Confirm before ordering |
| Yoke Style | Confirm before ordering |
| Input Spline Quantity | Confirm before ordering |
| Remanufactured | Confirm before ordering |
| Quantity | Confirm before ordering |
| Fitment Method | Confirm using GS4R70W3L3 part number, 4R70W platform, small block Ford bellhousing, 3-bolt starter setup, and 2WD drivetrain layout |
| Compatibility Support | Confirm fitment before ordering |
Ordering Support and Fitment Guidance
Before ordering the Gearstar Performance Transmission Automatic Transmissions GS4R70W3L3, confirm that the transmission matches your small block Ford engine, vehicle layout, electronic-control setup, starter configuration, and driveline requirements.
Important details to verify include vehicle year, make, model, small block Ford compatibility, Ford 4R70W compatibility, 3-bolt starter requirement, 2WD drivetrain layout, torque converter requirements, flexplate compatibility, converter bolt pattern, crankshaft pilot fitment, starter fitment, controller requirements, wiring harness requirements, electronic connector compatibility, throttle-position input, speed signal, lockup-control setup, transmission mount location, crossmember position, driveshaft length, yoke setup, shifter compatibility, cooler line routing, fluid requirements, dipstick setup, and installation hardware.
The available product details identify this unit as a Ford 4R70W 2WD 4-speed overdrive automatic transmission with a small block Ford bellhousing, 3-bolt starter, and Level 3 build, but they do not confirm whether the torque converter, flexplate, controller, wiring harness, cooler, fluid, dipstick, yoke, or other installation components are included. These details should be verified before purchase.
Our team can help confirm compatibility using the GS4R70W3L3 part number, vehicle details, small block Ford engine setup, 4R70W requirements, starter configuration, converter information, electronics, and drivetrain layout before ordering.
Frequently Asked Questions
What is the Gearstar GS4R70W3L3 transmission?
The Gearstar GS4R70W3L3 is a Ford 4R70W 2WD 4-speed overdrive automatic transmission with a small block Ford bellhousing and 3-bolt starter configuration. It is listed as a Level 3 transmission.
Is this a 4R70W transmission?
Yes. The product description identifies this unit as a Ford 4R70W automatic transmission.
How many gears does this transmission have?
This transmission is listed as a 4-speed overdrive automatic transmission.
Is this transmission for 2WD applications?
Yes. The product description lists it as a two-wheel-drive transmission. Buyers should confirm the exact rear-wheel-drive driveline layout before ordering.
What bellhousing does this transmission use?
This transmission is listed with a small block Ford bellhousing. Buyers should confirm exact engine, starter, flexplate, and converter compatibility before purchase.
What starter configuration does this transmission use?
This transmission is listed with a 3-bolt starter. Buyers should confirm starter compatibility with the intended engine and vehicle setup before ordering.
What does Level 3 mean on this transmission?
The product description lists this unit as Level 3. Buyers should confirm the exact Level 3 build details, power suitability, and included components before ordering.
Does this transmission include a torque converter?
Torque converter inclusion should be confirmed before ordering because it is not specified in the provided product details.
Does this transmission include a controller or wiring harness?
Controller and wiring harness inclusion should be confirmed before purchase. The 4R70W is electronically controlled, so buyers should confirm electronic-control requirements before installation.
Does this transmission include a cooler, fluid, or dipstick?
Transmission cooler, fluid, and dipstick inclusion should be confirmed before purchase because these details are not specified in the provided product information.
Is this a complete installation kit?
Included components should be confirmed before ordering. Buyers should verify whether the transmission includes the torque converter, flexplate, controller, wiring harness, cooler, cooler lines, fluid, dipstick, yoke, mount, or other installation hardware.
What part number should I use to confirm compatibility?
Use GS4R70W3L3 as the main manufacturer’s part number. The GES-GS4R70W3L3 Summit Racing part number can also help confirm product identity.
Who is this transmission best for?
This transmission is best for small block Ford builders, Ford performance shops, custom vehicle shops, restoration builders, mechanics, transmission installers, and drivetrain specialists who need a compatible Ford 4R70W 2WD overdrive automatic transmission with a small block Ford bellhousing, 3-bolt starter, and Level 3 build.

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