[mikeforte]

Hi charlandk,

I want to add some important info to this discussion. Being one of twelve Tremec Elite Distributors worldwide I am more than qualified to compare the the TKO-500 & TKO-600. All models of the TKO-500 & TKO-600 are very good gearboxes and capable of high horsepower in many applications including Ford, GM, Mopar, AMC and now import models too. All of the TKO models have multiple shifter locations and both mechanical & electric speedo drives.

The original T-56 that I used to sell has now been updated by Tremec to the T-56 Magnum or OEM version of the TR-6060 that is used in the Viper, 2010+ Camaro & GT-500 Mustang & more.
The TKO-600 with it's 2.87 1st gear and the .64 5th your RPM drops 36% from 3000 RPM to 1920 RPM. With the .82 5th your RPM drops 18% from 3000 RPM to 2460 RPM.

The T-56 Magnum with it's 2.66 1st gear you have 2 overdrives to choose from. The 3000 RPM with the .80 5th gear drops to 2400 RPM. The .63 6th gear your RPM drops 37% to 1890 RPM.

So in summary the T-56 Magnum can split the ratios to being two transmissions in one. Yes, the Magnum weighs a little more , but it offers more strength and more ratios built in. The T-56 Magnum, like the TKO-600 & TKO-500 feature multiple shifter locations and both mechanical & electric speedometer drives. We also have custom bellhousing for many many engine combinations. The T-56 Magnum also has a 2.97 1st and a .74 5th and .50 6th.
Forte's also manufacters external hydraulic slave clutch fork release kits in many styles.

If you have any questions, please feel free to contact me for help in pricing and fitment.