Strange 12 Bolt Rear End With Leaf Spring Mounts
30 Spline Alloy Axles With Heavy Duty Differential


Part Number: PRG310

Strange 12 Bolt Complete Rear End – Less Brakes
30 spline axles & Eaton HD clutch differential
No additional charge for custom width

Information Needed
Year, Make, & Model of vehicle
Factory width or custom
Housing ends
Single leaf, multi leaf, or other mounts
OEM drum or aftermarket disc brakes *
Bolt circle & stud choice
Gear ratio

Custom Information Needed
Axle flange to axle flange width *
Housing end to housing end width *
Housing ends
Pinion offset
Type of leaf spring mounts & location
OEM drum or aftermarket disc brakes *
Brake register diameter *
Axle flange diameter *
Bolt circle & stud choice
Gear ratio

* This Information Isn’t Required When Ordering With Brake Kit
Please supply wheel mounting surface to wheel mounting surface

• 12 bolt housing – H12FLE
• Choice of housing ends
• Choice of leaf spring mounts
• Alloy 30 spline axle package – P3104
• 4 1/2″, 4 3/4″, or 5″ bolt circle
• Choice of wheel studs – A3130 / A1035 / A1025 / A1026
• Eaton HD clutch style posi – R5087 / R5086
• Choice of standard gear ratio
• S-Series pinion yoke with U-bolts – U1602 / U1610
• Chrome steel cover – R5199
• Bottle of friction modifier (Clutch units only)
• Professionally welded and assembled
• Crated to protect your investment

30 spline Eaton True Track – OPRG05
33 spline Eaton True Track – OPRG06

Truetrac Units Are Only Available In 3 Series

Chrome moly yoke – OPRG17
HD yoke cap kit – OPRF37

LPW aluminum cover – OPRG10
Powder coat housing satin black – H1199P-BLK
Supply 2 quarts of Lucas gear oil – OPGL2Q

Wilwood Pro Street Brake Kits
11″ brakes – B2709WC
11″ brakes for staggered shocks – B2710WC
12″ brakes – B2708WC

There is a nominal charge to install brake kit

This product is only available from an Authorized Strange Dealer or Factory Direct Call - 800-646-6718 or Email Us


Strange Street 12 Bolt Rear End With Heavy Duty Posi & Leaf Spring Mounts

This durable Chevy 12-bolt rear end package includes leaf spring mounts.

This Strange GM 12-bolt rear end is available with your choice of housing ends and custom widths.

The Strange 12 bolt casting is much stronger than the OEM 12 bolt, while still accepting the same components. The casting is poured from proprietary nodular iron which is substantially stronger than cast iron. The main caps are constructed from forged chrome moly, instead of cast iron like the originals. These improvements in materials, have allowed the casting to be made not only thinner and lighter, but also stronger. The casting has a torque arm mount cast as part of the case and a location for a Strange 3 channel sensor.

Parts List and Installation Guide pdf File

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