S80 SFI Bellhousing to GM 4L80E Trans Case

The S80 SFI Bellhousing to GM 4L80E Trans Case (Part Number BH801) is a precision-engineered aluminum bellhousing designed to mate a Super 80 engine to a GM 4L80E automatic transmission. This component is essential for engine conversions, high-performance builds, and custom drivetrain configurations where OEM bellhousings don't accommodate the desired engine and transmission combination. Built from aluminum for weight savings and featuring SFI 30.1 certification, this bellhousing meets sanctioned racing standards and provides the structural integrity required for serious automotive applications.

The natural aluminum finish allows builders to match existing engine bay aesthetics or apply custom paint without additional surface preparation. At 15.53 lbs and measuring 17.5 x 8.5 x 20 inches, this bellhousing integrates directly with GM 4L80E transmission case dimensions while accommodating Super 80 block bolt patterns. The SFI 30.1 certification indicates this component has been tested and approved for use in sanctioned motorsports environments, making it suitable for both street and track applications where transmission and engine separation safety is critical. Precise machining ensures proper alignment between engine and transmission, eliminating concentricity issues that plague poorly-fitted adapters.

This bellhousing serves street rod builders, engine swap specialists, and race teams undertaking custom drivetrain installations. Whether building a LS engine conversion into a classic chassis, upgrading an existing powertrain with a stronger transmission, or constructing a competition vehicle, proper bellhousing fitment is non-negotiable for reliability and safety. Aluminum construction reduces overall vehicle weight compared to cast-iron alternatives, a meaningful advantage in performance and off-road applications where every pound impacts handling and efficiency.