Suncoast Converters 11 (280mm) Pro Street Converter - Big Block COA-20211-4

Coan Racing’s COA‑20211‑4 11″ Pro Street Converter is a torque converter tailored for big block engines paired with TH350 or TH400 transmissions, designed to deliver aggressive street performance in a compact form factor. The 11‑inch (280 mm) provides a responsive stall range, offering strong off-the-line acceleration while maintaining smooth and consistent highway behavior. Constructed with heavy duty components, this converter stands up to spirited driving and street-strip demands. Engineered with precision and durability in mind, it delivers impressive torque multiplication, making it a versatile and reliable choice for high-output big block TH350/400 setups seeking spirited launches and solid drivability.