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Grannas Racing

GR700A Supra MK2 T56 Magnum swap kit MKIV 2JZ 1JZ MKII

$ 4,572.90

Grannas Racing

GR700A Supra MK2 T56 Magnum swap kit MKIV 2JZ 1JZ MKII

$ 4,572.90

$ 4,572.90



The GR700A kit is the newest version of the full bolt in T56 Magnum swap kit for the MK2 Toyota Supra or Z10 Toyota Soarer. The A in GR700A stands for Aluminum bellhousing, as this kit comes with the Grannas Racing cast aluminum bellhousing. This bell is superior for a street car as it dampens noise as well as does not need indexed, it is a direct bolt on bell. It also has a large inspection hole which makes servicing a release bearing much easier.

This kit includes a brand new Tremec T56 Magnum, GR cast aluminum bell housing, factory Magnum shifter with GR 6" billet shift lever, chromoly transmission mount, bluetooth wiring harness, bellhousing index plate, and all hardware required. Driveshafts and clutches are optional, but recommended to make this an easy bolt-in experience. There is NO CORE charge for our transmission kits.

The wiring harness we include makes for a super clean and simple install. But not only that, but it has a bluetooth module with you can play with the settings such as reverse lockout control, and convert and adjust the T56 speed signal to make the factory speedometer work perfectly (if your using an aftermarket cluster/dash). No more need to cut down the reverse lockout spring or wire in a manual reverse unlock switch, this will auto unlock reverse under a set MPH (defaults to 4mph)! All of the settings are all adjustable through your smart phone with an app.

For the MK2 / Z10 Soarer cable drive speedometer, i recommend the Dakota Digital 200BT GPS to cable drive speedo box. This will allow you to run the factory speedo without the need for a cable drive adapter back to the transmission. This also works well because it doesnt matter if you change tire size, as the speed is based on GPS not any mechanical limitation.

If you add up the cost on all these parts, you will see that I am matching prices with big name speed shops like Summit and Jegs. Not only do I match big box store pricing but I put it all together in a one-stop-shop package deal and also provide you with the little details they don't... like proper hardware for EVERYTHING, trimmed transmission case... Also I trim the transmission case to fit perfectly. I am not just drop shipping an item and taking my cut of profit like these big name stores. I also include a wiring pigtail kit to make the wiring side of things easy. Oh, and did I mention I have actual product support as well? Try calling Summit and asking for help on your import car!

The stock tremec Magnum is rated at 700 ft lbs of torque. Just for comparison, the Getrag V160 is only rated around 500 ft lbs in stock form. These T56 Magnum transmissions are FREAKISHLY strong and will outlast a V160 at high power levels. Everything I build is tested rigorously in my racing program. No one else pushes these parts to the level I do! You can rest assured all parts go through my quality control and abused to test the limits of these 6-speed transmissions!

In 2016, I built and tested the first Supra T56 Magnum kit in my own car to be a direct replacement for the Getrag V160. We all know the V160 is a great transmission, but V160 parts have become impossible to find. Rather than risk breaking your transmission and not being able to repair it, I suggest swapping to this setup and put your V160 away for safe keeping. The Getrag transmission will continue to gain value as parts become even more scarce, but repair costs will also climb with the decreased parts availability.

These transmissions have great aftermarket support, aftermarket gearsets, and parts readily available for when you ruin a synchro or break a gear tooth. 

This is perfectly setup for a 1981-1986 A60 Toyota Supra or 1981-1986 Z10 Soarer. The shifter sits perfectly in the factory location.

This bolt-in kit includes:

    • Brand new Tremec T56 Magnum Transmission (comes with 1 year manufacturer warranty!)
    • Grannas Racing Cast Aluminum Bellhousing 
    • Full chromoly transmission crossmember
    • Prothane Polyurethane T56 transmission mount + hardware
    • Grannas Racing 6" billet shift lever
    • Includes bluetooth wiring harness
    • Current clutch options are here
      • I recommend the "close ratio" TUET16362 - 2.66, 1.78, 1.30, 1.00, .80, .63 but i can also get this in "wide ratio" TUET16363 - 2.97, 2.10, 1.46, 1.00, .74, .50
      • Driveshafts are available in aluminum and carbon fiber for almost any rear end combination.

    All transmission builds are created from brand new TREMEC T56 Magnums, NO USED transmissions EVER. These are then built to your specs. Choose the power level you need. 

    This is a brand new T56 Magnum-F direct from the Tremec factory, and I match the big box store prices. You can buy from me and get real experience or try calling the big name stores with your swap tech questions and see what kind of service you get! Read more here: GR700 Transmission


    We take a brand new Magnum-F Trans and give it a full REM polishing and Cryogenic treatment of the gear set. We do a 1st thru 4th carbon fiber blocker ring upgrade. Then include upgraded bronze Fork Pads on all forks. Also includes sprayer bung mod and case mods to fit Supra tunnel. Read more here: GR1000 Transmission

    *GR1000F (not available/recommended with aluminum bellhousing kit)
    We take a brand new Magnum-F Trans and faceplate 1st-4th gears. Includes custom billet shift forks, bronze fork pads, and then we do a cryogenic treatment of the gearset, and then do a rem polishing of the gearset. Read more here: GR1000F Transmission  


    The OEM MK2 tunnel does require some tunnel massaging/modification in order to fit this transmission, as almost every manual transmission is larger than the tight MK2 tunnel. However, this transmission fits better than most other aftermarket options (like the GIANT CD009) so I feel this is the best solution for a swapped car.

    PLEASE NOTE: The T56 Magnum transmission works great with the factory Toyota rear gearing 3.7, 4.10 or 4.3 ratios.

    More info on gear ratios can be found on this page I created T56 Magnum vs V160. What I consider the best rear ratio for most street cars is 4.10