4L60E High Performance PT9 - 425 HP Street Strip Build Up (F-Body)

In this video I detail my build strategy for a 1996 Camaro Z28 used in a street strip application, guiding viewers through parts selection, tips, pointers, and inspection advice for building a street‑strip 4L60E behind engines producing 375‑500 horsepower. I cover upgrading the hydraulics—including the pump and valve body—modifying the valve body for more demanding applications, resizing spacer plate orifices and shift calibration, and blocking off the fourth accumulator. I start with the basics before moving into parts selection for the case, including the 3‑4 clutch pack, forward drum updates for 1982‑1996 700R4s and 4L60Es, and a couple of recommended lube‑flow improvements.