TREMEC TR-4050 PerfectFit™ for 1973–1987 K-Series, K5 Blazer, Jimmy & Suburban

Modernize your “Rounded Line” or “Square Body” Chevy/GMC truck or SUV with the TREMEC TR-4050 5-speed PerfectFit™ kit. With a 6.16 ultra-low first gear and 6.03 reverse, you’ll have unmatched off-road control, while the .76 overdrive makes highway cruising smooth and efficient. Designed for high-powered builds, this transmission handles up to 600 lb-ft of torque.

Why Upgrade to the TR-4050 5-Speed?

• 6.16 first gear & 6.03 reverse for rock crawling and off-road control
• Crisp, precise shifting with excellent performance feel
• .76 overdrive for highway cruising and lower RPM
• Reduced NVH (noise, vibration, harshness) for improved comfort

TR-4050 Gear Ratios

6.16, 3.11, 1.71, 1.00, 0.76, 6.03 Reverse

Conversion Kit Includes

• TREMEC TR-4050 5-Speed Overdrive Transmission
  • Brand new, no rebuilt or remanufactured parts
  • High-contact helical gears for strength and quiet operation
  • Die-cast aluminum housing for rigidity and weight savings
  • Multiple rail internal shifter system for excellent shift feel
  • Tapered and needle bearings for reduced wear & friction
  • Advanced synchronizers for smoother shifting
  • 3.67 qt oil capacity
• Pilot Bearing
• Hardware & Crossmember Mount Template
• Rubber Transmission Isolator Mount
• Reverse Light Wiring Pigtail
• Step-by-step Instructions
• Factory Warranty

Optional Auto-to-Manual Conversion Parts

• McLeod Flywheel – billet steel for durability
• McLeod Clutch – high-performance, easy pedal effort
• Bellhousing Kit*
• Hydraulic Clutch Conversion Kit* – master cylinder, slave cylinder, remote reservoir, braided hose, pedal pushrod & hardware
• Shift Linkage Kit
• Shifter Handle & 5-speed Shift Knob options
• STX® Short-Throw Shifter
• Break-in, transmission, and hydraulic clutch fluids

*Required for automatic-to-manual conversions