1990 Mazda MX-5 Miata · #267
The car
A lightweight chassis, naturally aspirated LS power and a development plan designed to bridge time attack and endurance racing.
414Wheel horsepower2,550Pounds without driver
Engine
- Architecture
- Naturally aspirated LS V8
- Output
- 414 whp
- Torque
- 409 lb-ft
- Tuning
- Data-informed track calibration
Drivetrain
- Transmission
- Tex Racing T101A dogbox
- Rear end
- Ford 8.8
- Differential
- Auburn LSD
- Layout
- Front-engine, rear-wheel drive
Chassis
- Platform
- 1990 Mazda MX-5 Miata
- Weight
- ~2,550 lb without driver
- Build
- Owner-built and developed
- Competition no.
- 267
Suspension & aero
- Dampers
- First-generation 949 Racing Xida
- Damper specification
- AST 5100 with valving tuned for 949 Racing
- Aero
- Kognition package
- Setup
- Session-by-session test plans
- Validation
- Driver, tire and logged data
Wheels & tires
- Current package
- 245/40R15
- Development package
- 275/35R15
- 2027 focus
- Mechanical grip and repeatability
- Data
- Routine tire temperature and pressure records
Competition intent
- Time attack
- GTA Limited RWD
- Sprint
- GridLife TrackMod
- Endurance
- NASA ST2 / STE compatible
- Priority
- Pace without sacrificing durability
Development through competition2027 development
More tire. Same discipline.
The next phase moves toward a 275/35R15 tire package and the supporting bodywork, wheel fitment, brake capacity and setup changes it requires.
The core objective remains unchanged: make measured changes, validate them at speed, and maintain configurations for GTA Limited RWD, GridLife TrackMod and NASA endurance use.
See the 2027 targets