McLeod 8520 Aluminum Bellhousing Chevrolet/GM 621 Non-SFI

The McLeod 8520 is a non-SFI aluminum bellhousing designed for Chevrolet and GM applications using the 621 bolt pattern. Manufactured by McLeod Racing — a trusted name in performance drivetrain components — this bellhousing provides a lightweight, precision-cast aluminum construction that reduces overall drivetrain weight while maintaining the structural integrity needed for high-performance and street use.

Key Features:

• Aluminum construction — lightweight alternative to cast iron for reduced drivetrain weight
• 621 bolt pattern — compatible with Chevrolet/GM small block and big block engine configurations using the 621 pattern
• Non-SFI rated — suitable for street performance and non-sanctioned racing applications
• Precision manufactured to ensure proper clutch and transmission alignment
• Designed as a direct-fit replacement or performance upgrade bellhousing

The McLeod 8520 is an excellent choice for builders and enthusiasts looking for a quality aluminum bellhousing solution for GM-based manual transmission drivetrain builds. As a non-SFI unit, it is best suited for street, street/strip, or non-sanctioned track use where SFI certification is not required.