S400 Turbo Master Guide: S471/S472/S475/S480 Sizing, T4 vs T6, SX-E & Compound Setups Building a street-strip truck, a tow rig that can breathe at altitude, or a competition setup that lives at high mass flow? This long-form guide breaks down the S400 turbo family—common compressor cuts (S471–S480+), T4 vs T6...

5.9 Cummins Engine for Sale: Buyer’s Guide to Long Blocks vs Ready-Run Builds Shopping a 5.9L Cummins isn’t just picking a price and a pallet. The right choice depends on how you use the truck, what machine work was done, how the head and fasteners were upgraded, and how complete...

Parts for Cummins: The Ultimate 5.9 & 6.7 Upgrade Paths for Tow, Daily & Power This is your no-nonsense roadmap to building a reliable 5.9L or 6.7L Cummins—from stock-plus towing to daily-driven OEM+ to serious power. We’ll cover fueling (injectors, pumps), air (turbos, manifolds), transmission support, cooling, and monitoring—organized by...