Strange 9" Nodular Iron Case
S-Series - 3.250" Bore


Part Number: N2206

For Heavier Mid-Range Horsepower Cars
800 horsepower capability with the proper components
Accepts OEM Ford & aftermarket pinion supports

For Higher Output Vehicles – N1906

3.250″ Bore Applications
• 35 spline differentials
• 35 & 40 spline spools

Will Not Fit Wavetrac® Differentials or Mark Williams® Spools

S-Series Case
• Fresh design to 9″ nodular case
• 8-10% stronger material than stock nodular iron
• Additional mass in all critical areas
• Heavy duty nodular iron main caps
• Solid adjuster nuts
• Designed & machined by Strange
• Cast in the USA


Complete Center Sections
PRF130 / PRF135

Iron Daytona – N1914
Billet Aluminum – N1917

Fel Pro – H1112G
LubeLocker – H1111S


Strange’s radial rib design significantly increases the rigidity of the case Strange Engineering’s own blend of nodular iron contains more bonding additive which increases material strength by 8-10%. Coupled with strategical reinforcements to the pinion support area, tail bearing pocket, and main caps, it exceeds the strength of the factory nodular case. The 3.062” bore case will fit all differentials and spools from 28 to 33 spline. The 3.250” will fit 35 spline differentials and spools, and 40 spline spools requiring a 3.250” bore case. The pricing allows an individual to purchase a new upscale case at a price of a used and fatigued factory part.

Guidelines and Torque spec

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