TREMEC TUET11009 GM LS T56 Magnum 6-Speed Transmission

The TREMEC TUET11009 GM LS T56 Magnum 6-Speed Transmission is the flagship of TREMEC’s aftermarket performance lineup, engineered specifically for GM LS-powered vehicles and high-horsepower street, pro-touring, autocross, and road racing applications. Based on the proven TR-6060 architecture found in many factory supercars, the TUET11009 delivers exceptional strength, precise shifting, and double-overdrive gearing for outstanding acceleration and comfortable highway cruising. It is the perfect upgrade for LS-powered Camaros, Chevelles, Novas, Corvettes, C10 trucks, and custom hot rods.

Rated to withstand 700 lb-ft of torque, the T56 Magnum features a 2.66 first gear, 0.80 fifth gear, and 0.63 sixth gear, allowing aggressive launches while significantly reducing engine RPM at cruising speeds. With multiple shifter mounting locations, mechanical and electronic speedometer outputs, and premium synchronizers, the TUET11009 offers unmatched versatility and durability for modern high-performance builds.

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Features

• Genuine TREMEC TUET11009 T56 Magnum 6-Speed Manual Transmission
• Designed for GM LS engine applications
• Based on the proven TR-6060 transmission platform
• Rated for 700 lb-ft of torque
• Double-overdrive design for maximum drivability
• Smooth, precise shifting up to 7,800 RPM
• Lightweight high-strength aluminum case
• Premium multi-cone synchronizers
• Multiple shifter mounting locations
• Mechanical and electronic speedometer outputs
• Hydraulic clutch release design
• High-strength alloy steel gears and shafts
• Excellent for street, pro-touring, drag racing, and road racing applications

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Gear Ratios

• 1st Gear: 2.66:1
• 2nd Gear: 1.78:1
• 3rd Gear: 1.30:1
• 4th Gear: 1.00:1
• 5th Gear: 0.80:1
• 6th Gear: 0.63:1
• Reverse: 2.90:1

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Specifications

• Brand: TREMEC
• Manufacturer Part Number: TUET11009
• Model: T56 Magnum
• Transmission Type: 6-Speed Manual
• Application: GM LS
• Drive Type: Rear-Wheel Drive
• Torque Capacity: 700 lb-ft
• Maximum Recommended Shift RPM: 7,800 RPM
• Case Material: Aluminum
• Dry Weight: Approximately 135 lbs
• Input Shaft Diameter: 1.125 Inches
• Input Shaft Spline Count: 26
• Output Shaft Diameter: 1.375 Inches
• Output Shaft Spline Count: 31
• Speedometer Output: Mechanical and Electronic
• Shifter Positions: Multiple
• Release Type: Hydraulic
• Fluid Capacity: Approximately 3.66 Quarts
• Recommended Fluid: TREMEC HP-MTF, Dexron III ATF, or Mobil 1 Synthetic ATF
• Bellhousing Included: No
• Shifter Included: No
• Slip Yoke Included: No

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Package Includes

• TREMEC TUET11009 T56 Magnum 6-Speed Manual Transmission
• Front Bearing Retainer
• Shift Rail Assembly
• Internal Shift Components
• Installation Documentation

Bellhousing, clutch kit, flywheel, hydraulic release bearing, transmission mount, crossmember, shifter, slip yoke, and driveshaft are sold separately unless otherwise specified.

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Recommended Applications

Ideal for:

• Chevrolet Camaro
• Chevrolet Chevelle
• Chevrolet Nova
• Chevrolet Corvette
• Chevrolet El Camino
• Chevrolet C10 Pickup
• Chevrolet Bel Air
• Chevrolet Impala
• Pontiac Firebird
• Pontiac GTO
• LS1 Engine Swaps
• LS2 Engine Swaps
• LS3 Engine Swaps
• LS6 Engine Swaps
• 5.3L and 6.0L LS Truck Engine Swaps
• Restomod Projects
• Pro-Touring Builds
• High-Performance Street Cars

Compatible with GM LS engines when paired with the appropriate LS bellhousing, clutch, hydraulic release bearing, and transmission installation components.

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Installation Requirements

Installation may require:

• LS-compatible bellhousing
• 26-spline clutch disc
• Hydraulic throwout bearing
• 31-spline slip yoke
• Transmission crossmember
• Transmission mount
• Driveshaft modification depending on vehicle
• Hydraulic clutch master cylinder
• TREMEC HP-MTF, Dexron III ATF, or Mobil 1 Synthetic ATF

Professional installation is recommended to ensure proper bellhousing alignment, clutch operation, and maximum drivetrain reliability.

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Warranty

The TREMEC TUET11009 GM LS T56 Magnum 6-Speed Transmission is backed by a 1-Year Limited Warranty, covering defects in materials and workmanship under normal use and proper installation. Warranty claims are handled directly through TREMEC.

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Why Choose the TREMEC TUET11009 GM LS T56 Magnum?

The TREMEC TUET11009 is one of the most respected 6-speed manual transmissions in the performance aftermarket. Featuring a 700 lb-ft torque capacity, TR-6060-based engineering, 2.66 first gear, 0.80/0.63 double overdrive, multiple shifter locations, and premium synchronizer technology, it provides exceptional durability, crisp gear engagement, and outstanding versatility. Whether you’re building a high-powered LS swap, a pro-touring classic, or a dedicated road-race machine, the TUET11009 delivers the strength, reliability, and driving experience enthusiasts expect from TREMEC’s premier manual transmission.