Andrews Transmission, Fully Assembled, Ratios (1.976, 1.600, 1.145), 23" Setback
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Details
Details
Engineered for competitive circle track and road-racing performance, this fully assembled Andrews transmission delivers unmatched precision, durability, and balance. Featuring a close-ratio gearset of 1.976 / 1.600 / 1.145 and a 23" setback configuration, this unit is optimized for superior acceleration, smooth gear transitions, and improved chassis weight distribution - helping drivers maintain control and momentum through every corner.
Key Features
- Fully assembled Andrews gearbox — ready to install and race
- Close-ratio gearset (1.976 / 1.600 / 1.145) provides tight, consistent RPM drops
- 23" setback layout enhances rear weight bias for improved corner-exit traction
- Precision-machined gears and shafts for smooth, positive, and reliable shifts
- Designed for high-RPM, high-torque racing applications
- Modular construction allows quick servicing and ratio changes between events
- Built from premium heat-treated materials for long-term durability
Gear Ratios
- 1st Gear: 1.976:1
- 2nd Gear: 1.600:1
- 3rd Gear: 1.145:1
- 4th Gear: 1.000:1 (Direct Drive)
Technical Specifications
| Brand | Andrews |
|---|---|
| Assembly | Factory-assembled, race-ready transmission |
| Configuration | 4-speed close-ratio gearbox (4th direct 1:1) |
| Setback | 23" setback for improved chassis balance and traction |
| Primary Use | Circle track, asphalt late model, and road-race competition |
| Serviceability | Modular design allows for quick ratio changes and easy maintenance |
| Durability | Precision-engineered components for maximum reliability and performance |
What's Included
- Complete Andrews transmission assembly — fully built and tested
Shifter, linkage, bellhousing, clutch, release bearing, driveshaft, mount, and fluids are not included unless otherwise specified.
Installation & Setup Notes
- Confirm mounting provisions for 23" setback configuration before installation
- Use approved high-performance racing gear oil per manufacturer guidelines
- Verify input/output spline compatibility with driveline components
- Torque-check all bolts and fasteners after initial shakedown session
- Professional installation recommended for best performance and reliability
Why Choose Andrews
Andrews transmissions are trusted by race teams around the world for their precision, consistency, and proven track performance. Built to handle the demands of modern racing, each unit delivers smooth engagement, efficient power transfer, and dependable operation race after race.