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TREMEC TKO, TREMEC Magnum, & SST A41 Conversion Kits for 1968-1982 Corvette C3

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Enjoy Life in Overdrive

Tremec TKO TREMEC Magnum Silver Sport Transmissions A41 Transmission Kits 1968-1982 Corvette C3 Overdrive

Silver Sport Transmissions has the best engineered kits to modernize the powertrain of your 1968-1982 Corvette.  Our PerfectFit™ Kits bring the shifter handle to the factory correct position for the best possible fit and our billet shifter tower provides short, crisp shifts.

Car shows, close friends, and good times are all within easy reach when you choose a Tremec TKO 5-speed, Magnum 6-speed, or the A-41 4-speed automatic overdrive from Silver Sport Transmissions!

Use the tabs above to learn more.

 

Tremec TKO PerfectFit™ Kit for Corvette

TREMEC TKO 5-Speed PerfectFit Kit for 1968-1982 Corvette C3

The good ol' days never had it this good!

 

Printer

Download or print a C3 PerfectFit™ flyer here:  C3 PerfectFit™ Kit

Download or print the installation manual here:  Installation Manual

 

Testimonial

JD's - 1976 Corvette Installation Photos and Testimonial

 

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

PerfectFit™ Tremec TKO Kit Components for conversion from 3 or 4-speed manual

Tremec TKO 5-Speed PerfectFit Kit for 1968-1982 Corvette C3

  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.
    • Quick Detach STX Shifter®  for easy installation, no resealing required, unlike other offset shifters on the market
    • Exclusive SST case customization - CNC machined for a PerfectFit™ without compromise to the transmission
    • Thoroughly tested for leaks and performance.
    • Market Leading Warranty - Learn More
    • Optional Carbon Fiber Lined Synchronizer blocker ring upgrade for higher rpm shift capability 
  2. Crossmember Adapter
    • No crossmember cutting required
    • 1980-82 New Crossmember Included
  3. Driveshaft & Quick Release Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard.
    • Quick Detach Yoke for easy installation
  4. Speedometer Connection
    • Mechanical and electronic compatible
  5. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  6. Reverse Light Connector
  7. Pilot Bearing
    • Super heavy-duty needle roller type with lube seal for long life
  8. Exhaust Support Bracket (Not required with side pipes)
  9. Isolator Mount
    • Rubber for vibration isolation or optional heavy-duty poly for track duty
  10. 5 Speed Shift Pattern Plate
    • Maintains original appearance
  11. Installation Hardware
  12. Detailed Installation Instructions - including free lifetime tech support
  13. Market Leading Warranty - learn more

 

Request a Quick Quote

 

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 firewall mount for master cylinder - eliminates the guesswork for easy installation
    • Remote reservoir with hose
    • Braided steel pressure hose
    • Pedal pushrod and all hardware
    • Detailed installation instructions
  4. Flywheel
    • Billet steel, not cast steel, for improved durability and safety.
  5. Clutch Kit
    • High performance, long life packages with easy pedal effort tailored to your needs
  6. Bellhousing
    • Titanium-Aluminum OEM type or steel scattershields that meet race safety requirements
    • Not compatible with C1 mechanical clutch linkage, hydraulics only
  7. Corvette Shifter
    • Maintains factory appearance, model year specific
  8. Shifter Boot
  9. Shifter Ball
    • For aftermarket shifters, available in white or black for that classic look. Engraved with 5-speed shift pattern.

 

Request a Quick Quote

 

Why buy from Silver Sport Transmissions?

  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.

 

Call today and let us assemble a custom kit just for you, or complete a Quick Quote

Printer

Download or print a C3 PerfectFit™ flyer here:  C3 PerfectFit™ Kit

Download or print the installation manual here:  Installation Manual

 

Testimonial

JD's - 1976 Corvette Installation Photos and Testimonial

 

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

TREMEC TKO PerfectFit Kit for 1968-1982 Corvette C3

Silver Sport Transmissions Overdrive Kit Overview

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.
    • Quick Detach STX Shifter®  for easy installation, no resealing required, unlike other offset shifters on the market
    • Exclusive SST case customization - CNC machined for a PerfectFit™ without compromise to the transmission
    • Thoroughly tested for leaks and performance.
    • Market Leading Warranty
  2. Pilot Bearing
    • Super heavy-duty needle roller type with lube seal for long life
  3. Flywheel
    • Billet steel, not cast steel, for improved durability and safety.
  4. Clutch Kit
    • High performance, long life packages with easy pedal effort tailored to your needs
  5. Bellhousing and Inspection Cover
    • Titanium-Aluminum OEM type or steel scattershields that meet race safety requirements
    • Not compatible with C1 mechanical clutch linkage, hydraulics only
  6. Pedal Kit
  7. Mechanical Linkage and Throwout Bearing
  8. Crossmember Adapter
    • No crossmember cutting required
    • 1980-82 New Crossmember Included
  9. Driveshaft & Quick Release Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard.
    • Quick Detach Yoke for easy installation
  10. Speedometer Connection
    • Mechanical and electronic compatible
  11. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  12. Reverse Light Connector
  13. Exhaust Support Bracket (Not required with side pipes)
  14. Isolator Mount
    • Rubber for vibration isolation or optional heavy-duty poly for track duty
  15. Rubber or Leather Shift Boot and Trim Ring - Corresponds with model year
  16. Corvette Shifter
    • Maintains factory appearance, model year specific
  17. 5 Speed Shift Pattern Plate
    • Maintains original appearance
  18. Installation Hardware
  19. Detailed Installation Instructions - including free lifetime tech support
  20. Market Leading Warranty - learn more

 

Request a Quick Quote

 

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 firewall mount for master cylinder - eliminates the guesswork for easy installation
    • Remote reservoir with hose
    • Braided steel pressure hose
    • Pedal pushrod and all hardware
    • Detailed installation instructions
  4. Hurst Chrome Shifter Handle
  5. Shifter Ball
    • For aftermarket shifters, available in white or black for that classic look. Engraved with 5-speed shift pattern. T-handles are also available.

Request a Quick Quote

 

Why buy from Silver Sport Transmissions?

  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.

 

Call today and let us assemble a custom kit just for you, or complete a Quick Quote

T56 Magnum 6-Speed PerfectFit™ Kit for C3

TREMEC Magnum 6-Speed PerfectFit Kit for 1968-1982 Corvette C3

Highway cruising double overdrive!

 

 

Printer Download or print the installation manual here:  C3 Manual to Manual Installation Manual or C3 Auto to Manual Installation Manual

 

When you convert to the Tremec T56 Magnum 6-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)

 

TREMEC T56 Magnum Gear Ratios

2.66, 1.78, 1.30, 1.00, 0.80, 0.63
2.97, 2.10, 1.46, 1.00, 0.80, 0.63

 

Silver Sport Transmissions Magnum 6-Speed PerfectFit™ Kit Overview

TREMEC Magnum 6-Speed PerfectFit Kit for 1968-1982 Corvette C3

PerfectFit™ Tremec T56 Magnum Kit Components for conversion from a manual

  1. Tremec T56 Magnum 6 Speed Double Overdrive
    • 700 torque capacity wide or close ratio.
    • Perfect factory shifter positioning.
    • Market Leading Warranty - learn more
    • Multicone Synchronizer Blocker Rings come standard for low effort, high RPM shifts
    • Lower Cost Option  Classic Fit option available for non-console installations. Additional cutting required.
  2. Crossmember
    • CAD designed to keep Magnum within specified driveline angles.
    • Compatible with the factory exhaust
  3. Tunnel Patch
    • Available for both steel and fiberglass tunnels 
    • Makes a tight seal to keep the weather out of your console.
  4. Driveshaft & Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard.
  5. Speedometer Connection
    • Mechanical and electronic compatible
  6. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  7. Reverse Light Connector
  8. Pilot Bearing
    • Super heavy-duty needle roller type with lube seal for long life
  9. Isolator Mount
    • Rubber for vibration isolation
  10. 6 Speed Shift Pattern Plate
    • Maintains original appearance
  11. Installation Hardware
  12. Detailed Installation Instructions - including free lifetime tech support
  13. Market Leading Warranty - learn more

 

Request a Quick Quote

 

Optional components offered

  1. Bellhousing Adapter Plate
    • Billet Steel Adapter Plate to reuse factory 4-Speed Bellhousing & Mechanical Linkage
  2. Hydraulic Clutch Actuator Kit - Modern technology with less pedal effort
    • Master cylinder - high-quality Wilwood
    • Heavy-Duty concentric slave cylinder - 300,000 stroke service life 
    • Pre-engineered firewall mount for master cylinder - eliminates the guesswork for easy installation
    • Remote reservoir with hose
    • Braided steel pressure hose
    • Pedal pushrod and all hardware
    • Detailed installation instructions
  3. Heavy Duty Poly Isolator Mount Upgrade
    • For track duty
  4. Flywheel
    • Billet steel, not cast steel, for improved durability and safety.
  5. Clutch Kit
    • High performance, long life packages with easy pedal effort tailored to your needs
  6. Bellhousing
    • Titanium-Aluminum OEM type or steel scattershields that meet race safety requirements
  7. Reproduction Shifter Handle and Ball
  8. Aftermarket Shifter Handle
  9. Shifter Ball
    • For aftermarket shifters, available in white or black for that classic look. Engraved with a 6-speed shift pattern.

 

Request a Quick Quote

 

Why buy from Silver Sport Transmissions?

  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.

 

Call today and let us assemble a custom kit just for you, or complete a Quick Quote

When you convert to the Tremec T56 Magnum 6-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)

 

TREMEC T56 Magnum Gear Ratios

2.66, 1.78, 1.30, 1.00, 0.80, 0.63
2.97, 2.10, 1.46, 1.00, 0.80, 0.63

 

Silver Sport Transmissions Magnum 6-Speed PerfectFit™ Kit Overview

TREMEC Magnum 6-Speed PerfectFit Kit for 1968-1982 Corvette C3

PerfectFit™ Tremec T56 Magnum Kit Components for conversion from automatic

  1. Tremec T56 Magnum 6 Speed Double Overdrive
    • 700 torque capacity wide or close ratio.
    • Perfect factory shifter positioning.
    • Market Leading Warranty
    • Friction Lined Synchronizer Blocker Rings come standard for easy high RPM shifts 
    • Lower Cost Option  Classic Fit option available for non-console installations.  Slight trimming of the shifter opening may be required.
  2. Crossmember
    • CAD designed to keep Magnum within specified driveline angles.
    • Compatible with the factory exhaust
  3. Tunnel Patch
    • Available for both steel and fiberglass tunnels
    • Makes a tight seal to keep the weather out of your console.
  4. Flywheel
    • Billet steel, not cast steel, for improved durability and safety.
  5. Clutch Kit
    • High performance, long life packages with easy pedal effort tailored to your needs
  6. Bellhousing
  7. Reproduction Shifter Handle and Ball
  8. Driveshaft & Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard.
  9. Speedometer Connection
    • Mechanical and electronic compatible
  10. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  11. Reverse Light Connector
  12. Pilot Bearing
    • Super heavy-duty needle roller type with lube seal for long life
  13. Isolator Mount
    • Rubber for vibration isolation
  14. 6 Speed Shift Pattern Plate
    • Maintains original appearance
  15. Installation Hardware
  16. Pedals
  17. 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 firewall mount for master cylinder - eliminates the guesswork for easy installation
    • Remote reservoir with hose
    • Braided steel pressure hose
    • Pedal pushrod and all hardware
    • Detailed installation instructions
  18. Detailed Installation Instructions - including free lifetime tech support
  19. Market Leading Warranty - learn more

Optional components offered

  1. Heavy Duty Poly Isolator Mount Upgrade
    • For track duty
  2. Aftermarket Shifter Handle
  3. 6-Speed Pattern Shifter Ball (Classic White or Black)

 

Request a Quick Quote

 

Why buy from Silver Sport Transmissions?

  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.

Call today and let us assemble a custom kit just for you, or complete a Quick Quote

A41 4-Speed Automatic Basic Kit for GM

A41 PerfectFit Kit for C3 Corvette

Put it in drive and watch the gas stations go by.

 

The A41 4 Speed Automatic Transmission PerfectFit™ Kit

View the Installation Manual

A41 Automatic 4L60E A41 Ratio: 3.06, 1.63, 1.00, 0.70

 

Available in three stages:

Stage 1 - 450 Torque
Stage 2 - 550 Torque
Stage 3 - 650 Torque

 

Features:

  • Low RPM Cruising
  • Great Shift Quality
  • Dyno Tested
  • Electronic Controller
  • Lockup Torque Converter with Optional Stall Speeds
  • No Tunnel Cutting 

 

The A41 is an excellent way to replace your tired 904, 727, 518, Powerglide, TH350 (Turbo 350), TH400 (Turbo 400), 200R4 (200-4R) or 700R4 with modern technology that offers better acceleration and a 30% reduction in cruising rpms.

 

Request a Quick Quote

COMPUSHIFT Sport

COMPUSHIFTThe COMPUSHIFT Sport is the next generation of transmission controllers.

  • All the connectors - The COMPUSHIFT Sport transmission controller looms come with a full set of Plug and Play OEM Connectors for all supported transmissions - making installation effortless.
  • Smart Phone Integration - COMPUSHIFT Sport brings you the first-ever smartphone integrated transmission controller. This makes programming dead easy – allowing programming via Android or iOS smartphones, tablets, PCs and Macs. Connectivity includes both Bluetooth and dual independent CAN bus networks. All software is included.
  • Fully Customize Your Transmission - Get full and precise control of the shifting strategy for your transmission. COMPUSHIFT Sport and Pro are delivered with versatile factory-set programming for a wide variety of transmission and engine combinations. However, you can completely customize settings to your exact specifications.

 

COMPUSHIFT Sport Technical Specifications

COMPUSHIFT

Smart Phone / Tablet / Computer Integration:

  • COMPUSHIFT Sport brings you the first-ever smartphone integrated transmission controller. This makes programming dead easy – allowing programming via Android or iOS smartphones, tablets, PCs and Macs. Connectivity includes both Bluetooth and dual independent CAN bus networks. All software is included.

 

Control:

  • Get full and precise control of the shifting strategy for your transmission. COMPUSHIFT Sport and Pro are delivered with versatile factory-set programming for a wide variety of transmission and engine combinations. However, you can completely customize settings to your exact specifications.
  • Fully adjustable shift speeds, shift feel and torque converter clutch control.
  • Provides adjustable output for speedometer calibration.

 

Compatibility:

  • COMPUSHIFT has the capability of communicating with many different factory and aftermarket engine controllers for quick plug and play setup. No wire splicing required.
  • Uses industry-standard trouble codes

 

Ease of Setup:

  • All The Connectors - The COMPUSHIFT Sport transmission controller looms come with a full set of Plug and Play OEM Connectors for all supported transmissions - making installation effortless.
  • COMPUSHIFT software is upgradeable in the field via Bluetooth. Updates are available via Google Play, Kindle and the Apple App Store.
  • Two full sets of calibration modes that can be selected by button or app.
  • Transfer case switch input for shift / speedometer calibration in low range / 4WD vehicles.

 

Durability:

  • Highly Water and Dust Proof - IP65 Rated

 

Request a Quick Quote

A41 4L60E Kit for 1968-1982 Corvette C3

Each PerfectFit™ Kit comes with the correct components for your application and will include the following parts:

  1. Automatic Transmission - A41 (GM 4L60E / GM 4L65E Aftermarket replacement)
  2. COMPUSHIFT Sport Controller
  3. Dipstick and Tube - OEM Style
  4. Auxiliary Oil Cooler - High performance for Stage 2 and 3 only, Optional purchase for Stage 1 kits
  5. Bellhousing 
  6. Lock Up Torque Converter - Electronically controlled, stall options available 
  7. Throttle Position Sensor - Bolt-on unit provides throttle feedback to the computer with just 3 wires
  8. Braided Steel Cooler Lines
  9. Speedometer Cable - Mechanical Speedo Cable
  10. Hardware - High strength grade 8 fasteners standard
  11. Wiring - Plug & Play wiring harness
  12. Inspection Cover
  13. Driveshaft - High strength computer balanced with sealed u-joints & slip yoke
  14. Reverse Light Wiring
  15. Crossmember - Heavy duty formed steel, powder-coated
  16. Isolator - Vibration-free, heavy-duty rubber isolator

Request a Quick Quote