
GM TH400 Performance Transmission – Twisted Street™ Up To 450 HP
⚠️ Chevrolet (Chevy) Case Configuration Only
✔ Includes 4" Tail Housing Configuration
💪 Rated Up To 450 HP
🚗 Daily Driver • Cruiser • Muscle Car • Street Performance
Built for reliability. Built for drivability. Built the Twisted Torque™ way.
The Twisted Street™ TH400 is designed for customers who want more than a stock rebuild without stepping into a full performance transmission.
Whether you're driving a classic muscle car, weekend cruiser, street truck, or mild performance build, the Twisted Street™ TH400 delivers the durability and dependability that made the legendary GM Turbo 400 one of the strongest automatic transmissions ever built.
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⚙️ WHY CHOOSE A TH400?
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✅ Rated Up To 450 HP
✅ Legendary TH400 Durability
✅ Excellent For Street Performance
✅ Proven Behind Small & Big Block Applications
✅ Improved Shift Quality & Reliability
✅ Stock Stall Converter Included
✅ Built In The USA
The TH400 remains one of the most respected automatic transmissions ever produced, known for its strength, simplicity, and long-term reliability.
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🔧 TWISTED STREET™ PERFORMANCE PACKAGE
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✔ Twisted Torque™ High-Energy Clutches & Steels
✔ Heavy-Duty Master Rebuild Kit
✔ Complete Bushing Replacement
✔ Complete Bearing & Thrust Washer Replacement
✔ Rebuilt & Calibrated Pump Assembly
✔ Modified Valve Body Assembly
✔ TransGo® Shift Improvement Components
✔ Street-Tuned Shift Calibration
✔ 34-Element Intermediate Sprag Upgrade
✔ HD Intermediate Band
✔ High-Flow Transmission Filter
✔ New Vacuum Modulator
✔ Updated OEM Hard Parts As Required
Every transmission is professionally rebuilt, upgraded, and assembled in-house by the team at Twisted Torque™.
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🚙💨 STOCK STALL CONVERTER INCLUDED
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Every Twisted Street™ TH400 includes a stock stall torque converter.
Typical stall speed ranges from approximately 1450-1650 RPM depending on engine combination and vehicle weight.
Ideal For:
✔ Stock Engines
✔ Mild Performance Builds
✔ Cruisers
✔ Muscle Cars
✔ Street Trucks
Provides smooth engagement, excellent low-speed drivability, and dependable performance.
Higher stall converter upgrades are available for camshaft, supercharged, turbocharged, and specialty applications.
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⚙️ PUMP, VALVE BODY & HYDRAULICS
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🔧 Rebuilt & Calibrated Pump Assembly
Pump circuits are inspected and calibrated to maintain proper pressure and long-term durability.
🔧 Modified Valve Body Assembly
Hydraulic updates improve shift quality, reduce clutch slip, and provide more consistent transmission performance.
⚙️ TransGo® Shift Improvement Components
Provides quicker clutch apply rates, reduced heat, and improved transmission life.
⚙️ Street-Tuned Shift Calibration
Clean, positive shifts without excessive harshness.
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⚙️ COMPLETE REBUILD PROCESS
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Every Twisted Street™ TH400 receives:
✔ Complete Disassembly
✔ Professional Cleaning
✔ Full Inspection
✔ New Seals & Gaskets
✔ New Bushings
✔ New Bearings & Thrust Washers
✔ Hard Part Inspection
✔ Precision Assembly
✔ Final Inspection Prior To Shipment
No shortcuts. No reused wear items.
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🚙 COMMON APPLICATIONS
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✔ Chevrolet Chevelle
✔ Chevrolet Camaro
✔ Chevrolet Nova
✔ Chevrolet El Camino
✔ Chevrolet C10
✔ Pontiac GTO
✔ Buick GS
✔ Oldsmobile 442
✔ Custom Street Rods
✔ Big Block Street Cars
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📌 CONFIGURATION
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✔ Chevrolet (Chevy) Case Pattern
✔ 4" Tail Housing Included
✔ 2WD Configuration
✔ Floor Shift & Column Shift Compatible
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⚙️ AVAILABLE UPGRADES
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✔ Higher Stall Torque Converters
✔ Deep Aluminum Transmission Pan
✔ Full Synthetic Transmission Fluid
✔ Performance Converter Upgrades
✔ Additional Performance Upgrades Available
Built specifically for your vehicle, engine combination, and intended use.
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🛡️ BUILT THE TWISTED TORQUE™ WAY
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✔ Fully Rebuilt
✔ Internally Upgraded
✔ Precision Assembled
✔ Professionally Inspected
✔ Built By Transmission Professionals
When reliability matters, shortcuts aren't an option.