Strange Ultra Bolt-Thru Case 9" Ford Center Section
HD 40 Spline Lightweight Steel Spool
10" Pro Gear & Female Coupler
Part Number: PRF220-10
 
Designed Specifically For Drag Racing
This Center Section & Gear Set May Not Fit Your Housing
Refer to the clearance diagrams shown on this page
 
Application:
Alcohol Funny Car
Top Dragster
 
Includes:
• Professional assembly
• ARP ring gear bolts
• Shipped in protective container
 
Ultra Case:
• 3.812″ bore
• 206-T4 aluminum
• Extra large oil channel
• Critical areas heavily reinforced
• Billet aluminum main caps
• Solid steel adjuster nuts
• Designed & machined by Strange
• Cast in the USA
 
10″ Tapered Bearing Support:
• Billet 6061-T6511 aluminum
• Drilled & tapped for 5/16″ & 3/8″ pick-up sensors
• Fits 10″ gear sets only
• Eliminates need for pinion support spacer
• Enhances rigidity
• Clear anodized finish
 
9″ & 9 1/2″ Tapered Bearing Support:
• Billet 6061-T6511 aluminum
• Drilled & tapped for 5/16″ & 3/8″ pick-up sensors
• Pinion support spacer installed for use with 10″ gears
• Provides ability to use 9″ or 9 1/2″ gears without support change
• Clear anodized finish
 
3/8″ Sensor Holes Were Added to Supports in 2021
 
HD 40 Spline Lightweight Spool 
• 2.250″ bearing journal for additional load capacity
• Lightened to eliminate unnecessary weight
• Forged steel