30Oct2026
Tag: Project Ol’ Cotton
The NV3500 has earned plenty of criticism in the performance world, but was it really a junk transmission? We take a closer look at its design, history and limitations.
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.
The NV3500 transmission removal process from Ol' Cotton involves careful jacking, draining fluids, disconnecting components, and finally removing the old transmission for replacement.
Planning a manual conversion? This Swap Parts List breaks down the components needed to install a Tremec Magnum 6-speed in a GMT800 truck.
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.
