Offers five and six-speed conversions for
Chevy Trucks
2-wheel drive or 4-wheel drive with divorced transfer cases.
Small Block, Big Block builds, and even LS swaps
Our line of products offers simple ways to upgrade your 3 or 4 speed to a Tremec five-speed or a complete automatic to a five or six-speed overdrive.
For the customer that wants more fun & drive-ability out of their C/10 – C/20, we have you covered.

We have coversion solutions for  1955-1959 / 1960-1966 / 1967-1972 / 1973-1987
From the same SEMA award-winning team that brought you the SN95 Mustang Hydraulics.

 Experience The MDL Difference,

  • We extend the manufacturer’s warranty by an extra year.
    And we add a 1-year grace period.
  • We offer the best in the industry customer service.
  • When you purchase a complete MDL Conversion Package you get, lifetime technical support.

Modern Drivelines approach to the C10 Truck using a TKX 5-speed transmission conversion from a 3 or 4-speed manual transmission is quite simple.
In most cases, the original Chevy bell housing can be reused along with the 168 tooth 11” clutch pattern or 153 tooth 10.5” clutch pattern flywheel as well as the mechanical clutch linkage.
Or we can convert you to a Hydraulic Clutch release as an upgrade. Trucks equipped with automatic transmissions will need a new bell housing, flywheel, and clutch release.

Get a solution for your Square-Body today.

Clutch selection is the next critical step. If your manual transmission is equipped with a 10 spline input shaft.
Modern Driveline will select one of our 26-spline, in-house, handmade clutches matched to your horsepower and use up to 600 Horsepower.
Beyond 600 Horsepower or strip use, Modern Driveline will recommend and provide either a Tilton twin disk clutch and Chromoly flywheel or a Mcleod, Ace Racing or Tilton twin disk clutch.
If you have an M22 transmission with the “Fine 26 Spline” input shaft, you may be able to reuse your clutch.


 Modern Driveline will reconfigure the TKX and locate the shifter to the “forward Position”, placing the shifter about 12.3” from the back of the bell housing.
With the shifter in the correct location, a “Hurst” Candy Cane shifter lever will be provided that will work with bench seats and give you that classic look.
Once the transmission is mounted to the back of the bell housing, you will use the crossmember provide that will locate the transmission into the correct driveline angle.
A slip yoke is included in most conversion packages because in most cases your driveshaft can be shorted at a local shop. Or Modern Driveline can provide you with steel, aluminum, or carbon fiber driveshaft as needed.

Modern Driveline has figured out all the details for C10 conversions for small block, big block, and LS engines.

Tremec TKX transmission conversion package for Small & Big Block Chevy

Modern DriveLine has put together a conversion solution for  C-10 owners

Who needs an upgrade and wants more drive-ability from their Truck.


If your truck is 2-WD or a 4-WD with a divorced transfer case we have options for you.

Whether you are converting from Auto to manual or just want an upgrade, we have a solution for you.
We can supply everything you need from the back of the block to the driveshaft.

We offer complete conversion packages for GM featuring the NEW TKX

You get all the parts you need and none you don’t.

  • You will need to select a clutch matched for your horsepower & use. Need Help… give us a call.
  • We will use any existing parts you have that we can… there’s no need to buy new if you don’t have to.

You will have to select a clutch matched to your horsepower & use.
If you need help request a quote below.


Check out our HOW TO page, just click this link

We also Have OIL COOLERS   click this link to find out more


We have solutions for the customer that already has usable 3 or 4 speed ‘Muncie or Saginaw’ transmission components in their ‘C10’ Truck.

We have Kits that allow you to use your existing 168 tooth-capable bell-housing (GM 621 or equivalent), flywheel with 11″ clutch pattern, stock clutch pedal, and mechanical clutch release.

TREMEC 5 or 6-Speed Transmission with Shifter

      • All Fastening Hardware including ARP
      • Aluminum or ‘QuickTime’ Steel Bell-housing
      • Superior Diaphragm Clutch or McLeod or Tilton Twin-Disk matched to your horsepower and usage.
      • Modern Driveline U.S.A. made Lightened Billet Steel Flywheel
      • U.S. made Steel Cross-member
      • Transmission Mount
      • Wiring Harness & Plugs
      • Shift Ball & Lever and Boot
      • Hydraulic Master and Slave clutch linkage
      • Synthetic Automatic Transmission Fluid
      • High-Speed Precision Balanced Aluminum or Steel Driveshaft
      • Detailed Installation Instructions and Lifetime Tech Support

The MDL conversion packages are as complete as possible.
You get ALL the components you need where competitors’ packages provide only the basics.
When comparing costs be sure you are comparing apples to apples on the contents, quality & after the order service

HOW TO: Tell if you have a Married or Divorced Transfer Case

Most Components are IN-STOCK.


Now let’s “Shift Forward, “Make it Modern”… call today for a detailed quote.