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Upgrade Your GM Build to a TREMEC TKX 5-Speed – 600 lb-ft Torque, Responsive .72 Overdrive & 7,500 RPM Shifts!

If you are ready to transform the driving dynamics of your GM-powered classic, muscle car, or custom restomod, the TREMEC TKX 5-Speed Manual Transmission (TCET18083) is the ultimate drivetrain solution. Engineered specifically for the high-performance aftermarket, this robust GM-specific TKX 5-speed combines an upgraded 26-spline input shaft with a versatile, responsive .72 overdrive gear. It is built from the ground up to reliably handle 600 lb-ft of torque and execute crisp, flawless shifts at a screaming 7,500 RPM. Whether you are replacing a legacy Muncie 4-speed, upgrading an overworked factory T5, or dropping a high-horsepower crate engine into a classic chassis, this wide-ratio manual transmission delivers modern strength and modern highway drivability.

What are the Specifications of the TREMEC TKX TCET18083?

• Part Number: TCET18083
• GM-Specific Input Shaft: 26-Spline
• Output Shaft: 31-Spline
• Torque Capacity: Rated for up to 600 lb-ft of torque
• RPM Capability: Certified for clean, high-RPM shift points up to 7,500 RPM
• Shifter Versatility: Three mounting locations built into the case for flexible console layout alignment (custom front shift kits available from SST!)
• Warranty Protection: 12-Month Factory Warranty backed directly by TREMEC

GM Wide-Ratio Gear Ratios:

• 1st: 3.27 (Provides excellent off-the-line mechanical advantage for heavy street cars)
• 2nd: 1.98
• 3rd: 1.34
• 4th: 1.00 (Direct drive)
• 5th: 0.72 (The perfect balance of highway RPM reduction and active acceleration performance)

How Does the TREMEC TKX Improve Shift Quality and Fitment in GM Applications?

The TREMEC TKX solves the historic packaging and high-RPM shifting limitations of vintage gearboxes. By blending bulletproof internal strength with modern, smooth-shifting synchronizer technology, it delivers a driving experience that elevates any pro-touring or classic street machine.

• Streamlined Fitment: The compact, end-loaded aluminum design easily fits inside tight vintage GM transmission tunnels (Chevelle, Camaro, Nova, Corvette) without requiring extensive, invasive floor pan modifications.
• Maximum Case Rigidity: A heavy-duty, 3-piece aluminum housing minimizes internal flex to keep your gear engagement perfectly aligned under high-torque acceleration.
• Crisp, Precise Shifts: Features an integrated, billet aluminum short-throw shifter that delivers tight, mechanical gear changes while isolating cabin road noise and vibration.
• Advanced Synchronizers: Hybrid multi-cone synchronizers featuring sintered bronze and carbon rings allow you to effortlessly grab the next gear at high revs without grinding.
• Quiet, Refined Cruising: An NVH-optimized (Noise, Vibration, and Harshness) helical gear layout ensures an incredibly quiet ride on long-distance highway hauls.
• Leak-Free Integrity: Premium gaskets at all major housing faces guarantee a clean, oil-tight installation in your home garage or professional shop.
• Restomod-Ready Electronics: Includes integrated connections for a reverse light switch and a cruise control safety switch to easily interface with modern wiring harnesses.

Why Choose the TKX TCET18083 Over a Vintage Muncie, Saginaw, or Factory T5?

Choosing the heavy-duty 26-spline input shaft of the TCET18083 provides significantly more shear strength at the clutch disc interface compared to traditional vintage GM 10-spline 4-speed configurations, offering ultimate reliability during hard launches. With modern internal geometry, OEM-level durability standards, and track-tested precision, the TKX is the absolute gold standard for GM restomods. It is the perfect gearbox upgrade for iconic platforms like the Chevrolet Camaro, Chevelle, Nova, Corvette, Pontiac Firebird, GTO, and custom C10 trucks. Traditional 4-speeds leave your engine spinning excessively fast at highway speeds, whereas the TKX upgrades you to modern overdrive comfort.

Upgrade Your Drivetrain with Silver Sport Transmissions Today

Get the ideal balance of brute performance, structural packaging, and modern drivability in a single, bolt-in package from the elite team at Silver Sport Transmissions.

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