Product Description:
Hawks Motorsports offers our clients this 1958-1964 GM B-Body SST A41 4L60E Automatic 4-Speed Conversion Kit | COMPUSHIFT Controller | A41-GM-BBODY-5864. This PerfectFit™ automatic transmission upgrade replaces outdated automatic transmissions with modern overdrive technology, improved drivability, and electronically controlled shifting for classic GM B-Body vehicles.
Vehicle Configuration Required
Transmission conversion kits are vehicle specific. Complete the Hawks Motorsports Transmission Conversion Request Form before ordering so our team can verify compatibility and confirm the correct components for your application.
Designed for 1958-1964 GM B-Body applications, this SST A41 4L60E Automatic Conversion Kit fits Chevrolet Impala, Bel Air, and Biscayne models along with Pontiac Bonneville, Grand Prix, and Catalina vehicles.
The A41 4L60E provides a modern 4-speed automatic overdrive solution for classic vehicles looking to improve acceleration, highway cruising, and overall drivability. This transmission is an excellent replacement for older automatic transmissions including the 904, 727, 518, Powerglide, TH350, TH400, 200R4, and 700R4.
The A41 4L60E features a 3.06, 1.63, 1.00, and 0.70 gear ratio combination and is available in multiple torque capacity stages to support different performance applications.
AVAILABLE STAGES:
- Stage 1 - 450 lb-ft torque capacity
- Stage 2 - 550 lb-ft torque capacity
- Stage 3 - 650 lb-ft torque capacity
The SST A41 kit includes the essential components required for installation including the A41 automatic transmission, COMPUSHIFT Sport controller, bellhousing, lockup torque converter, wiring harness, speedometer connection, and installation hardware.
KEY FEATURES:
- 1958-1964 GM B-Body automatic transmission conversion kit
- Fits Chevrolet Impala, Bel Air, Biscayne, Pontiac Bonneville, Grand Prix, and Catalina
- SST A41 4L60E automatic transmission
- Modern 4-speed overdrive performance
- Gear ratios: 3.06, 1.63, 1.00, 0.70
- Available in 450, 550, and 650 lb-ft torque stages
- Low RPM highway cruising
- Improved shift quality
- Dyno tested
- Electronic transmission controller included
- Lockup torque converter with optional stall speeds
- No tunnel cutting required
- COMPUSHIFT Sport transmission controller
- Bluetooth smartphone, tablet, and computer programming
- Fully adjustable shift speeds, shift feel, and torque converter clutch control
- Plug-and-play wiring harness
- OEM-style dipstick and tube
- Bellhousing included
- Rubber cooler lines included
- Mechanical speedometer cable compatibility
- Slip yoke included
- Reverse light wiring included
- High-strength installation hardware included
- Detailed installation instructions
- Lifetime technical support
COMPUSHIFT SPORT CONTROLLER FEATURES:
- Plug-and-play OEM style connectors for supported transmissions
- Smartphone, tablet, PC, and Mac integration
- Bluetooth connectivity
- Dual CAN bus communication
- Adjustable shift points and shift feel
- Adjustable torque converter clutch control
- Speedometer calibration adjustment
- Industry-standard diagnostic trouble codes
- Upgradeable software through Bluetooth
- Multiple calibration modes selectable through button or app
- IP65 rated water and dust protection
FITMENT APPLICATIONS
| Make | Model | Years |
|---|---|---|
| Chevrolet | Impala | 1958-1964 |
| Chevrolet | Bel Air | 1958-1964 |
| Chevrolet | Biscayne | 1958-1964 |
| Pontiac | Bonneville | 1958-1964 |
| Pontiac | Grand Prix / Catalina | 1958-1964 |
INSTALLATION NOTES:
- Verify engine combination and drivetrain configuration before ordering.
- Transmission kits are application specific and require vehicle details for proper configuration.
- Additional components may be required depending on engine and vehicle setup.
- Driveshaft requirements may vary depending on application.
- Professional installation is recommended for drivetrain modifications.
- Installed or modified components may not be eligible for return. Confirm application details before installation.
