21Aug2026
Author: Nick Adams
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 Super Bee is back for 2027 with 600 HP from a twin-turbo Hurricane inline-six. Dodge is giving the legendary name its first six-cylinder-powered model.
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.
The Boostline 5.7 proves you don't need a huge budget to make serious LS power. BTR's canted-valve heads pushed this mild 346ci combo to an impressive 571 horsepower.
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.
Chevrolet is ushering in the next generation of Silverado with new V8 power and advanced technology. The redesigned lineup expands capability across every trim level.
