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TREMEC TKO, TREMEC Magnum, & SST A41 Conversion Kits for 1964-1967 GM A Body: Chevelle, Tempest, GTO, El Camino, LeMans, Skylark, 442, Cutlass, Beaumont, Special

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Enjoy Life in Overdrive

TREMEC Overdrive Conversion Kits for 1964-1967 GM A Body: Chevelle, Tempest, GTO, El Camino, LeMans, Skylark, 442, Cutlass, Beaumont, Special

Silver Sport Transmissions has the best-engineered kits to modernize the powertrain of your 1964-1967 GM A-body. Bench seat or buckets, console or no console, we've got you covered. 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, TREMEC T56 Magnum 6-speed or  A41 4-speed automatic overdrive from Silver Sport Transmissions!

1964-1967 GM A-body style includes: Chevrolet Chevelle, Malibu SS, El Camino; Pontiac GTO, Tempest; Oldsmobile Cutlass, 442; Buick Special, GS, and GM Canada Beaumont. 

Use the tabs above to learn more.

 

Tremec TKO PerfectFit™ Kit for GM A-Body

Silver Sport Transmissions Tremec TKO 5-Speed PerfectFit Kit

The good ol' days never had it this good!

Printer

Download or print an A1 PerfectFit™ flyer here:  A1 PerfectFit Kit

Download or print the installation manual here:  Installation Manual

 

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

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

  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 - learn more
    • Optional Carbon Fiber Lined Synchronizer blocker ring upgrade for higher rpm shift capability
  2. Driveshaft & Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard.
  3. Speedometer Connection
    • Mechanical and electronic compatible
  4. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  5. Reverse Light Connector
  6. Pilot Bearing
    • Super heavy-duty needle roller type with lube seal for long life
  7. Isolator Mount
    • Rubber for vibration isolation or optional heavy-duty poly for track duty
  8. Tunnel Template & Ready to install Sheet Metal
    • Not available with Classic Fit TKO
  9. Installation Hardware
  10. Detailed Installation Instructions - including free lifetime tech support
  11. 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 or cast steel depending on your needs/budget
  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. Shifter Handle
  8. Shifter Ball
    • 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

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 - learn more
    • 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 optional heavy-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 - 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 under dash 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. T-Handle Shifter

 

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

Magnum 6-Speed PerfectFit™ Kit for GM A-Body

Tremec Magnum 6-Speed PerfectFit Kit for 1964-1967 GM A Body: Chevelle, Tempest, GTO, El Camino, LeMans, Skylark, 442, Cutlass, Beaumont, Special

Highway Cruising Double Overdrive!

 

Printer Download or print the installation manual here:  Installation Manual

View the installation video here: Installation Video

 

When you convert to the Tremec 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 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

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

 

Tremec Magnum Kit Components for conversion from a manual

  1. Tremec Magnum 6 Speed Double Overdrive
    • 700 torque capacity wide or close ratio.
    • Friction Lined Synchronizer Blocker Rings come standard for easy high RPM shifts
    • Market Leading Warranty - learn more
  2. Replacement Tunnel Metal/Cutting Template - Not pictured
  3. Pilot Bearing
    • Super heavy-duty needle roller type with lube seal for long life
  4. Quicktime Steel Bellhousing
    • SFI Rated 6.1
    • Required for Magnum Conversions
  5. SST’s PerfectFit™ Hydraulic Kit, Learn More
    • Complete kit with everything you need
    • Rated at 7,000 RPMs
    • Pushrod angle already determined for each application, for an easy install
  6. Installation Hardware
  7. Speedometer Connection
    • Mechanical and electronic compatible
  8. Reverse Lockout Connector
  9. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  10. Isolator Mount
    • Rubber for vibration isolation
  11. Crossmember
    • CAD designed and box welded for rigidity
    • Better exhaust clearance and rigidity when compared to tubular or aluminum variants
    • Choose BOP or Chevelle end brackets
  12. Reverse Light Connector
  13. Driveshaft and Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard
  14. Detailed Installation Instructions - including free lifetime tech support
  15. Market Leading Warranty - learn more

 

Request a Quick Quote

 

Optional components offered

  1. Flywheel Billet or cast steel depending on your power level/budget
  2. Clutch Kit
    • High performance, long life packages with easy pedal effort tailored to your needs
  3. Pedals
  4. Ring Brothers Reservoir (Comes in natural or black finish)
  5. Shifter Handle
  6. Shifter Ball - For aftermarket shifters, available in white or black for that classic look. Engraved with a 6-speed shift pattern.
  7. Shift Boot and Trim Ring

 

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 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 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

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

PerfectFit™ Tremec Magnum Kit Components for conversion from automatic

  1. Tremec Magnum 6 Speed Double Overdrive
    • 700 torque capacity wide or close ratio.
    • Friction Lined Synchronizer Blocker Rings come standard for easy high RPM shifts
  2. Market Leading Warranty - learn more
  3. Replacement Tunnel Metal/Cutting Template - Not pictured
  4. Pilot Bearing
    • Super heavy-duty needle roller type with lube seal for long life
  5. Flywheel
  6. Clutch
  7. Quicktime Steel Bellhousing
    • SFI Rated 6.1
    • Required for Magnum Conversions
  8. SST’s PerfectFit™ Hydraulic Kit, Learn More
    • Complete kit with everything you need
    • Rated at 7,000 RPMs
    • Pushrod angle already determined for each application, for an easy install
  9. Pedals
  10. Installation Hardware
  11. Shift Boot and Trim Ring
  12. Speedometer Connection
    • Mechanical and electronic compatible
  13. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  14. Isolator Mount
    • Rubber for vibration isolation
  15. Crossmember
    • CAD designed and box welded for rigidity
    • Better exhaust clearance and rigidity when compared to tubular or aluminum variants
    • Choose BOP or Chevelle end brackets
  16. Reverse Light Connector
  17. Driveshaft and Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard
  18. Detailed Installation Instructions - including free lifetime tech support
  19. Market Leading Warranty - learn more

 

Request a Quick Quote

 

Optional components offered

  1. Ring Brothers Reservoir (Comes in natural or black finish)
  2. Performance Clutch

 

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 PerfectFit™ Kit for A-Body

Silver Sport Transmissions A41 4-Speed Automatic 4L60E PerfectFit Kit 1964-1967 GM A Body: Chevelle, Tempest, GTO, El Camino, LeMans, Skylark, 442, Cutlass, Beaumont, Special

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

 

The A41 4 Speed Automatic Transmission

64-67 Installation Manual / 64-67 Hardtop Installation Manual / 64-67 Crossmember Instructions /  64-67 Tunnel Instructions

 

A41 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 Automatic conversion kit for 1964-1967 GM A Body: Chevelle, Tempest, GTO, El Camino, LeMans, Skylark, 442, Cutlass, Beaumont, Special

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 Perch
  16. Isolator - Vibration-free, heavy-duty rubber isolator 

 

Request a Quick Quote