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64-67 GM A-Body, SST Tremec Perfect-Fit 5 Speed TKO 600 Transmission Kit, Auto to TKO

Our PerfectFit™ TKO600 kit is the best upgrade you can do to your Chevelle, Tempest, GTO, El Camino, LeMans, Skylark, 442, Cutlass from Auto to Manual including the pedal kit! Shifter relocation machining included.
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Availability: Ships anywhere in Cont US for only $149


When you convert to the Tremec TKO 5 Speed, you will experience:

  • 30-50% increase in fuel economy
  • Low RPM cruising for greatly reduced driver fatigue and an improved highway driving experience. Road trips are fun again!
  • Reduced engine wear leading to longer engine life
  • Cooler engine operating temperatures
  • Reduced NVH (noise - vibration - harshness)


TKO Gear Ratios

TKO 500 - 3.27, 1.98, 1.34, 1.00, 0.68
TKO 600 - 2.87, 1.89, 1.28, 1.00, 0.64 OR 0.82


Silver Sport Transmissions Overdrive Kit Overview

Silver Sport Transmissions Tremec TKO 5-Speed PerfectFit Kit for 1964-1967 GM A Body: Chevelle, Tempest, GTO, El Camino, LeMans, Skylark, 442, Cutlass, Beaumont, Special

PerfectFit™ Tremec TKO Kit Components for conversion from an automatic

  1. Tremec TKO 5 Speed Overdrive
    • 500-600 torque capacity wide or close ratio.
    • Compact billet aluminum shifter mechanism provides smooth shifting with short throws. True internal offset with perfect factory shifter positioning.
    • Exclusive SST case customization - CNC machined for a PerfectFit™ without compromise to the transmission
    • Thoroughly tested for leaks and performance.
    • Market Leading Warranty 
    • Optional Carbon Fiber Lined Synchronizer blocker ring upgrade for higher rpm shift capability
  2. Pilot Bearing
    • Super heavy duty needle roller type with lube seal for long life
  3. Flywheel
    • Billet or cast steel depending on your needs/budget
  4. Clutch Kit
    • High performance, long life packages with easy pedal effort tailored to your needs
  5. Bellhousing & Inspection Cover
    • Titanium-Aluminum OEM type or steel scattershields that meet race safety requirements
  6. Mechanical Linkage & Throwout Bearing
  7. Pedals
  8. Shifter Handle & 5 Speed Ball - Black or White
  9. Driveshaft & Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard.
  10. Speedometer Connection
    • Mechanical and electronic compatible
  11. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  12. Reverse Light Connector
  13. Isolator Mount
    • Rubber for vibration isolation or optionalheavy-duty poly for track duty
  14. Tunnel Template & Ready to install Sheet Metal
    • Not available with Classic Fit TKO
  15. Installation Hardware
  16. 5 Speed Console Shift Pattern Plate (Chevelle Only)
  17. Shift Boot and Trim Ring
  18. Detailed Installation Instructions - including free lifetime tech support
  19. Market Leading Warranty 


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Optional components offered

  1. Carbon Fiber Lined Synchronizer Blocker Ring and Bronze Shift Fork Pad Upgrade
    • For higher rpm shift capability and increased durability
  2. Heavy Duty Poly Isolator Mount Upgrade
    • For track duty
  3. Hydraulic Clutch Actuator Kit - Modern technology with less pedal effort
    • Master cylinder - high quality Wilwood
    • Heavy-Duty concentric slave cylinder - 1,000,000 cycle service life 
    • Pre-engineered under dash mount for master cylinder - eliminates guess work for easy installation
    • Remote reservoir with hose
    • Braided steel pressure hose
    • Pedal pushrod and all hardware
    • Detailed installation instructions
  4. T-Handle Shifter


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Why buy from Silver Sport Transmissions and Butler?

  1. Fast Shipping
    • Popular kits are in stock for short lead times
  2. Complete Kits
    • Why go to multiple sources for parts? Make one phone call and get things going on your project now.
  3. Excellent Customer Service
    • Lifetime tech support
    • Knowledgeable staff
  4. Premium Components
    • Only approved, high quality parts are sold by SST.
  5. Engineering Know How
    • Only SST has experienced and licensed engineers on staff. We know what fits, what works and how to install it.

SST- Why We Are Different

R&D Video

Production Process

SST Shifters

Tremec 2-3 Shift


  • SST-F1PF-Kit-Auto
  • SST-F1PF-Kit-Auto
  • Silver Sport Transmissions
  • Ships anywhere in Cont US for only $149
  • New


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