Th350 Extra Deep Pan

The TCI TH350 Extra Deep Pan is a purpose-built transmission sump designed for builders and enthusiasts seeking extended fluid capacity and improved cooling in street, strip, and off-road applications. This finned aluminum pan replaces the factory shallow pan and adds 2.0 quarts of fluid volume, providing better thermal management and extended drain intervals—critical upgrades for high-performance TH350 builds, towing setups, and vehicles running in demanding conditions where stock cooling capacity falls short.

Constructed from durable aluminum and featuring a finned design, the TH350 Extra Deep Pan increases heat dissipation by expanding surface area exposed to airflow beneath the vehicle. The extra 2.0 quart capacity means more transmission fluid reserves, which translates to lower operating temperatures during sustained load—whether towing heavy trailers, racing at the strip, or spirited driving in traffic. The deep sump geometry positions the pickup tube lower in the pan, ensuring consistent fluid supply to the pump even during aggressive acceleration or cornering where sloshing would starve a shallow pan. This kit includes all necessary hardware and gasket materials for straightforward installation on stock and modified TH350 transmissions.

Mechanics and builders upgrading turbo, supercharged, or naturally aspirated vehicles with TH350 transmissions should consider this pan as essential preventative maintenance. It's equally valuable for trucks and muscle cars hitting the dyno or track where transmission fluid temperature is a limiting factor. Installation requires pan removal and filter service; check your specific vehicle's undercarriage clearance before purchase, as the deeper profile may require minor suspension or crossmember modifications on lowered builds. Compatible with stock and modified TH350 units in Chevrolet, Pontiac, Oldsmobile, and Buick applications from the 1970s onward.