21Aug2026
Ol' Cotton's Tremec transmission swap isn't going exactly to plan. A hydraulic leak and exhaust clearance issues put our Silverado through one more round of repairs.
Ol’ Cotton is finally getting its Tremec Magnum 6-speed. Follow along as we tackle the install and run into an unexpected problems.
This former fleet truck proves you don’t have to buy the truck you want, you can build it. Project Ol’ Cotton is becoming the ultimate V8, manual-shift street truck.
The TREMEC Magnum is often mistaken for the original T-56, but they're far from identical. Here's what separates these two popular six-speed transmissions.

