Big Block Mopar bellhousing for the Reid Racing 2 piece Superglide and Super Hydra 400® cases fits 361-383-400-413-426-440 B and RB series engines including the 426 GEN II Hemi. Cast from high-strength aluminum and heat treated for additional toughness, the bellhousing passes the stringent SFI 30.1 certification* and is approved with no external shields required. The bell weighs only 13.0 pounds, features an open bottom for easy converter access, a reduced diameter for better floorboard clearance, and a contoured mounting flange to properly match the rear of the engine block.These bellhousings allow for direct fit to the engines with no spacers or adapters needed.Designed for use with a 130 tooth flexplate, stock style starters are used in the factory location. Since most cars use a 1/4” thick rear motor plate, the starter snout boss has been moved 1/4” forward on this bellhousing. It will also accept the larger 168 tooth Chevy-style flexplate.Length is the same as the Chevy bellhousing.