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

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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.
    • Market Leading Warranty - learn more
    • 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. 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. 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
  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.
    • Market Leading Warranty - learn more
    • 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. 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. 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
  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  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

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 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
    • Market Leading Warranty - learn more
    • 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 the 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. Market Leading Warranty - learn more

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

  

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

 

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 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)
  • COMPUSHIFT Sport 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 the 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