TREMEC TKO, TREMEC Magnum and SST A41 Conversion Kits for 1971-1974 MOPAR B-Body: Charger, GTX, Road Runner, Satellite and Super Bee

TREMEC Conversion Kits for Mopar B-Body
Silver Sport Transmissions has the best engineered kits to modernize the powertrain of your 1971-1974 MOPAR B-body. 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 Magnum 6-Speed or SST A41 automatic overdrive from SST!

Use the tabs above to learn more.

 

Tremec TKO PerfectFit™ Kit for Late Mopar B Body

TREMEC TKO 5-Speed PerfectFit Kit for Mopar Late B 1971-1974 Charger Satellite Road Runner Super Bee GTX

The good ol' days never had it this good!

1971-1974 Mopar B Body Style include: Charger, GTX, Road Runner, Satellite, and Super Bee.

 

Printer

Download or print a B Body PerfectFit™ flyer here:  PerfectFit™ Kit Flyer

Download or print the installation manual here:  Installation Manual

Download or print the firewall stiffener instructions for the hydraulic kit here:  Firewall Installations

 

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)

 

Silver Sport Transmissions Overdrive Kit Overview

TREMEC TKO PerfectFit Kit Mopar Late B 1971-1974 Charger Satellite Road Runner Super Bee GTX

 

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

  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. Perfect factory shifter positioning.
    • Exclusive SST case customization - CNC machined for a PerfectFit™ without compromise to the transmission
    • Thoroughly tested for leaks and performance.
    • Full 12 month warranty with unlimited technical support, 24 month installation window
    • Optional Carbon Fiber Lined Synchronizer blocker ring upgrade for higher rpm shift capability
  2. Crossmember
    • CAD designed, lightweight, easy bolt in
  3. Driveshaft & Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard.
  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. Isolator Mount
    • Rubber for vibration isolation 
  9. Installation Hardware
  10. Tunnel Template & Sheet Metal - ready to install for a professional look
  11. Detailed Installation Instructions - including free lifetime tech support
  12. 12 Month Product Warranty
    • Includes 24 month activation delay so you can finish your project.

 

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. 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 guess work for easy installation
    • Remote reservoir with hose
    • Braided steel pressure hose
    • Pedal pushrod and all hardware
    • Detailed installation instructions
  3. FlywheelBillet 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
    • Titanium-Aluminum OEM type or steel scattershields that meet race safety requirements
  6. Pistol Grip Shifter Handle - Carbon Fiber look (pictured) also available
  7. Throwout Bearing

 

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 B3 Body PerfectFit™ flyer here:  PerfectFit™ Kit Flyer

Download or print the installation manual here:  Installation Manual

Download or print the firewall stiffener instructions for the hydraulic kit here:  Firewall Installations

 

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)

 

Silver Sport Transmissions Overdrive Kit Overview

TREMEC TKO PerfectFit Kit Auto to Manual conversion for Mopar Late B 1971-1974 Charger Satellite Road Runner Super Bee GTX

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. Perfect factory shifter positioning.
    • Exclusive SST case customization - CNC machined for a PerfectFit™ without compromise to the transmission
    • Thoroughly tested for leaks and performance.
    • Full 12 month warranty with unlimited technical support, 24 month installation window
    • Optional Carbon Fiber Lined Synchronizer blocker ring upgrade for higher rpm shift capability
  2. Flywheel
    • Billet steel, not cast steel, for improved durability and safety.
  3. Clutch Kit
    • High performance, long life packages with easy pedal effort tailored to your needs
  4. Bellhousing and Inspection Cover
    • Titanium-Aluminum OEM type or steel scattershields that meet race safety requirements
  5. Crossmember
    • CAD designed, lightweight, easy bolt in
  6. Driveshaft & Slip Yoke
    • Lightweight, steel, custom driveshaft for superior strength. Dynamically balanced for smooth operation and premium solid u-joints come standard.
  7. Speedometer Connection
    • Mechanical and electronic compatible
  8. Calibrated Speedo Cable or Electronic Speedo Connector - Your choice
  9. Reverse Light Connector
  10. Pilot Bearing
    • Super heavy duty needle roller type with lube seal for long life
  11. Isolator Mount
    • Rubber for vibration isolation 
  12. Throwout Bearing
  13. Rubber Boot and Shift Ring
  14. Pedal Kit
  15. Pistol Grip Shifter Handle - Carbon Fiber look (pictured) also available
  16. Installation Hardware
  17. Tunnel Template & Sheet Metal - ready to install for a professional look
  18. Detailed Installation Instructions - including free lifetime tech support
  19. 12 Month Product Warranty
    • Includes 24 month activation delay so you can finish your project.

 

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. 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 guess work for easy installation
    • Remote reservoir with hose
    • Braided steel pressure hose
    • Pedal pushrod and all hardware
    • Detailed installation instructions
  3. Shifter Handles and Balls

 

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 B-Body

TREMEC Magnum PerfectFit Kit for Mopar E 1970-1974 Challenger Barracuda Cuda AAR Gran Coupe T/A SE R/T

Highway Cruising Double Overdrive!

Printer Download or print the basic installation manual here, detailed installation manual available via email:  Installation Manual

 Press: Hotrod Magazine

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

Close: 2.66, 1.78, 1.30, 1.00, 0.80, 0.63
Wide:   2.97, 2.10, 1.46, 1.00, 0.74, 0.50

 

Silver Sport Transmissions PerfectFit Kit Overview
Keep your torsion bar suspension! Our kit does not require changing to coil over.

Tremec Magnum Basic Kit for Mopar E 1970-1974 Challenger Barracuda Cuda AAR Gran Coupe T/A SE R/TTremec T56 Magnum Kit Components

  1. Tremec T56 Magnum 6 Speed Double Overdrive
    • PerfectFit Shifter position fits inside the factory console
    • 700 torque capacity wide or close ratio.
    • Friction Lined Synchronizer Blocker Rings come standard for easy high RPM shifts
    • Full 12 month warranty with unlimited technical support, 24 month installation window
    • Optional Add the Front Shift Kit for bench seat clearance
  2. SFI Rated Steel Bellhousing
  3. Hydraulic Clutch Actuator Kit
  4. 6-Speed Pattern Shift Handle Insert
  5. Sheetmetal to widen tunnel
  6. Speedometer Connection
    • Mechanical and electronic compatible
  7. Speedo Gear
  8. Reverse Light Connector
  9. Pilot Bearing
    • Super heavy duty needle roller type with lube seal for long life
  10. Crossmember - No need to replace torsion bar suspension. Stronger than the original equipment crossmember.
  11. Isolator Mount
    • Rubber for vibration isolation 
  12. Installation Hardware
  13. Slip Yoke and Driveshaft
  14. Detailed Installation Instructions - including free lifetime tech support
  15. 12 Month Product Warranty
    • Includes 24 month activation delay so you can finish your project.

Optional components offered

  1. Flywheel Billet steel, not cast steel, for improved durability and safety.
  2. Clutch Kit
    • High performance, long life packages with easy pedal effort tailored to your needs
  3. Reproduction Shifter Handle (Wooden Look or Carbon Fiber)
  4. Cryogenic Gear Treatment
  5. Driveshaft Upgrades 

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.

A41 Automatic PerfectFit™ Kit for B-Body Mopar

A41 4L60E PerfectFit Kit for Mopar Late B 1971-1974 Charger Satellite Road Runner Super Bee GTX

 

Numerous magazines have reviewed the kit: Popular Hot Rodding, Hot Rod, Mopar Action and several blogs say that this transmission will bring your car "into the 21st century!"

 

The A41 4 Speed Automatic Transmission

View the Installation Manual and View the Floor Shifter Installation Manual

 

67-76 Model Years Only

Mopar A41

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
  • Stand Alone 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

 

EZ-TCU Overdrive Transmission Controller

EZ-TCUThe EZ-TCU™ allows for maximum electronic control over shift points, shift firmness & shift speed. The EZ-TCU™ is fully configured and ready to run right out of the box – no tuning necessary. But for those who demand customization, the unit is also optionally fully programmable based on load, speed and RPM.

  • Maximum electronic control over shift points, shift firmness & shift speed
  • No software, laptop or experience needed
  • Completely intuitive programming interface or optional fully programmable based on load, speed and RPM
  • Multiple shift modes include full manual mode
  • Compatible with popular GM transmissions, including our A41 Automatic 4-Speed
  • Includes transmission control unit, hand-held & wiring harness

 

│Easy Electronic Overdrive Transmission Control • No Laptop, Previous Tuning Experience or Tuning Required

For computer controlled transmissions, nothing beats the new TCI® EZ-TCU™ by FAST™. No software, laptop or tuning experience is required. Simply install this transmission control unit according to the enclosed instructions, and then start the system by answering the simple Setup Wizard questions on the included hand-held unit. It’s that easy; the EZ-TCU™ does all the work for you!


│Optionally Programmable Based on Load, Speed & RPM • Stores (2) Custom Calibrations • Optional Paddle Shifter

The EZ-TCU™ is fully configured and ready to run right out of the box – no tuning necessary. But for those who demand customization, the unit is also optionally fully programmable based on load, speed and rpm. TCI® and FAST™ engineers took a page from the very successful FAST™ EZ-EFI® Self Tuning Fuel Injection System and designed the EZ-TCU™ programming interface to be completely intuitive. There is no real expertise needed if you want to custom program your calibration. The EZ-TCU™ is capable of real-time switchable calibrations, which allows for multiple setups. Run one calibration on the way to the track, and then with the push of a button, have a more aggressive setup ready for the race. The multiple shift modes include full manual mode for using bump or paddle shifters.


│Built-In Self Diagnostic Feature • INCLUDES: Trans Control Unit, Hand-Held Display, OEM-Quality Wiring Harness

Compatible with most popular GM transmissions, including the 4L60E, 4L65E, 4L80E and 4L85E, and the TCI® 6x Six-Speed Transmission. The EZ-TCU™ allows for maximum electronic control over shift points, shift firmness and shift speed. Self diagnostics allow users of every skill level to fully utilize the EZ-TCU™. The complete kit includes the transmission control unit, hand-held unit and wiring harness.


│EZ-TCU™ Information Summary:

  • No software, laptop or experience needed

  • Maximum electronic control over shift points, shift firmness & shift speed

  • Completely intuitive programming interface or optional fully programmable based on load, speed & rpm

  • Compatible w/ GM transmissions, including 4L60E, 4L65E, 4L80E, 4L85E & TCI® 6x Six-Speed

  • Includes transmission control unit, hand-held and wiring harness

  • Included hand-held can operate as electronic dash

  • Multiple shift modes include full manual mode

 

*Requires a Throttle Position Sensor (TPS)

Installation Instructions

 

Request a Quick Quote

A41 4L60E PerfectFit Kit for Mopar Late B 1971-1974 Charger Satellite Road Runner Super Bee GTX

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

  • Automatic Transmission - A41 (GM 4L60E / GM 4L65E Aftermarket replacement)
  • EZ-TCU Controller
  • Dipstick and Tube - OEM Style
  • Auxiliary Oil Cooler - High performance for Stage 2 and 3 only, Optional purchase for Stage 1 kits
  • Bellhousing 
  • Lock Up Torque Converter - Electronically controlled, stall options available 
  • Throttle Position Sensor - Bolt-on unit provides throttle feedback to computer with just 3 wires
  • Pre-Bent Steel Cooler Lines - Replaces factory lines (64-66 Rubber Cooler Lines)
  • Flex Plate - SFI Approved
  • Crossmember* - Heavy duty formed steel, powder coated
  • Rubber Isolator* - Heavy duty isolator to minimize vibration
  • Speedometer Cable - Mechanical Speedo Cable
  • Hardware - High strength grade 8 fasteners standard
  • Wiring - Plug & Play wiring harness
  • Inspection Cover
  • Driveshaft* - High strength computer balanced with sealed u-joints & slip yoke (64-66 Slip Yoke Only)
  • Reverse Light Wiring

 

Request a Quick Quote

 

Paddle ShifterHow often have you wished that your car had options similar to those found on high dollar g-machines and touring cars? Now it can with the new TCI® Paddle Shifter. Designed to work with any General Motors/GM automatic 4 or 6-speed (TCI 6X) transmission controlled by the revolutionary TCI® EZ-TCU™ Transmission Control Unit, this shifter features distinctive show car styling and shifting performance that’s perfect for track days or highway cruising. 

The TCI® Paddle Shifter communicates to the EZ-TCU™ through a wireless CAN signal that cannot be affected by signal interference or disruption. The steering wheel mounted unit operates by slim, 1⁄2-inch thick paddle shifters which instantly instruct the transmission as to your gear of choice without hesitation or delay. This shifter fits all 5 & 6-bolt aftermarket steering wheels and ships complete with several spacers of varying width, allowing you to adjust the steering wheel location to your personal preference. Power for the shifter system comes from the horn button relay rather than from batteries which require replacement and can result in a low power signal.

  • Paddle shifter installedFits all 5 & 6-bolt aftermarket steering wheels – provides consistent, repeatable shifting for g-machines & touring cars
  • Ships with several spacers of varying width, allowing you to set the steering wheel location for personal preference
  • Works with any GM automatic 4 or 6 speed (TCI 6X) transmission controlled by the revolutionary TCI® EZ-TCU™
  • Utilizes CAN signal for gear selection without interference or hesitation
  • Easy to install, slim line 1⁄2-inch thick paddles with stylish black anodized finish
  • Only shifts trans. through foward gears. A standard shifter is required to shift trans to Park, Reverse and Neutral.
  • Requires TCI® EZ-TCU™
  • Optional Electronic Display - shows gear selection everytime a gear change is made

 

View the Installation/Operation Manual

 

Request a Quick Quote