LS Swap T56 Magnum Conversion Kit | LS1, LS2, LS3 and More

The LS Swap T56 Magnum Conversion Kit is a complete 6-speed manual transmission conversion package designed for Gen III and Gen IV GM LS engines, including LS1, LS2, LS3, LS6, LQ4, LQ9, LY6, L92, L76, L99, 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L engines equipped with 6-bolt crankshafts. Built around the legendary TREMEC T56 Magnum 6-speed transmission, this kit delivers exceptional strength, smooth shifting, and double overdrive performance for street, pro-touring, restomod, and high-performance builds. It includes nearly everything required to complete a professional LS manual transmission conversion.

Rated to handle 700 lb-ft of torque and capable of shifting up to 7,800 RPM, the T56 Magnum features premium carbon and sintered bronze synchronizers, a 26-spline input shaft, and a heavy-duty 31-spline output shaft. The included bellhousing, performance clutch, billet steel flywheel, hydraulic release bearing, pilot bearing, wiring pigtails, and installation hardware make this one of the most complete LS transmission conversion packages available.

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Features

• Complete LS engine T56 Magnum conversion kit
• Fits Gen III and Gen IV LS engines with 6-bolt crankshafts
• Compatible with LS1, LS2, LS3, LS6, 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L engines
• Genuine TREMEC T56 Magnum 6-speed manual transmission
• Rated for 700 lb-ft of torque
• Smooth shifting up to 7,800 RPM
• Double overdrive for improved fuel economy and highway cruising
• Heavy-duty aluminum transmission case
• Carbon and sintered bronze synchronizers
• Performance clutch assembly rated for high-horsepower applications
• SFI-approved billet steel flywheel
• Heavy-duty steel bellhousing
• Hydraulic throwout bearing included
• Reverse lockout, reverse light, and electronic speedometer wiring included
• Ideal for street performance, pro-touring, and LS swap projects

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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
• Transmission Model: T56 Magnum
• Transmission Type: 6-Speed Manual
• Application: Gen III & Gen IV GM LS Engines
• Torque Capacity: 700 lb-ft
• Maximum Shift RPM: 7,800 RPM
• Case Material: Aluminum
• Input Shaft Diameter: 1.125 inches
• Input Shaft Spline Count: 26
• Output Shaft Diameter: 1.375 inches
• Output Shaft Spline Count: 31
• Bellhousing Material: Steel
• Clutch Diameter: 10 Inches
• Flywheel: 168-Tooth SFI-Approved Billet Steel
• Speedometer Output: Electronic
• Shifter Included: Yes
• Bellhousing Included: Yes
• Yoke Included: No
• Fluid Capacity: Approximately 2.7 Quarts
• Recommended Fluid: Dexron III/Mercon ATF

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Kit Includes

• TREMEC T56 Magnum 6-Speed Manual Transmission
• Steel Bellhousing
• Performance Clutch Disc
• Heavy-Duty Pressure Plate
• SFI-Approved Billet Steel Flywheel
• Hydraulic Throwout Bearing
• Pilot Bearing
• Flywheel Bolts
• Pressure Plate Bolts
• Bellhousing Hardware
• Reverse Lockout Wiring Pigtail
• Reverse Light Wiring Pigtail
• Electronic Speedometer Wiring
• Installation Hardware

Transmission mounting bolts, transmission crossmember, transmission mount, driveshaft, and slip yoke are sold separately unless otherwise specified.

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Recommended Applications

Ideal for:

• Chevrolet Camaro LS Swap
• Chevrolet Chevelle LS Conversion
• Chevrolet Nova LS Swap
• Chevrolet C10 LS Swap
• Chevrolet El Camino
• Chevrolet Bel Air
• Chevrolet Impala
• Chevrolet Corvette LS Projects
• GM A-Body Builds
• GM F-Body Builds
• Street Rods
• Restomod Projects
• Pro-Touring Builds
• High-Performance Street Cars

Compatible with Gen III and Gen IV LS engines featuring 6-bolt crankshafts. Not compatible with 1999–2000 6.0L engines with long crankshafts or 8-bolt/9-bolt crankshaft engines.

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Installation Requirements

Installation may require:

• M10 x 1.5 transmission mounting bolts
• Transmission crossmember
• 31-spline slip yoke
• Driveshaft length modification
• Hydraulic clutch master cylinder
• Transmission mount
• Clutch pedal assembly
• Dexron III/Mercon ATF
• Bellhousing alignment verification with offset dowel pins if required

Professional installation is recommended to ensure proper drivetrain alignment, clutch operation, and long-term reliability.

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Warranty

The LS Swap T56 Magnum Conversion Kit | LS1, LS2, LS3 and More is backed by a 1-Year Limited Warranty, covering defects in materials and workmanship under normal use and proper installation.

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Why Choose the LS Swap T56 Magnum Conversion Kit?

The LS Swap T56 Magnum Conversion Kit is the ideal solution for enthusiasts looking to pair a modern LS engine with one of the strongest manual transmissions available. Featuring a 700 lb-ft torque capacity, double overdrive gearing, 7,800 RPM shift capability, SFI-approved billet flywheel, and a complete set of premium installation components, this kit delivers exceptional strength, smooth shifting, outstanding highway drivability, and proven reliability for street performance, pro-touring, and high-horsepower LS-powered builds.