12 BOLT MUSCLEPAK

Complete 12 Bolt MUSCLEPAK THE STRONGER REAR-END REPLACEMENT! All Moser 12 Bolt Housings are designed and manufactured in the U.S.A. using Moser Engineering owned Casting Boxes. Package includes; New Moser 12-Bolt Made in the U.S.A. Housing, with OEM located mounting provisions, seamless steel tubing (3″ O.D., 1/4″ wall), custom alloy 30 spline bolt-in axles, bearings, studs, seals, heavy duty retainer plates, new housing ends, t-bolt kit, Eaton clutch posi, “1310” Series pinion yoke, ring & pinion, chrome rear cover, set up with Timken bearings, New Drum Brakes, brake lines, brake line clamps, emergency brake cables. COMPLETELY ASSEMBLED! Many options available! Standard Finish is no coating (bare metal), Powder Coating optional (adds 2-3 Days processing time). Find your vehicle. Select your options. We will build it the way you want it!

*ALL MOSER 12-BOLT REAR ENDS ARE “CAR” TYPE REARS! THIS INCLUDES ALL TRUCK APPLICATIONS, AFTERMARKET SUSPENSION COMPONENTS THAT UTILIZE THE REAR COVER OF THE OEM 12-BOLT TRUCK REAR ARE NOT APPLICABLE!

**THE UMI COIL-OVER KIT FOR GM A-BODY CARS IS NOT APPLICABLE AND WILL NOT WORK WITH ANY OF OUR LOWER CONTROL ARM CHOICES!

Moser Canada
Differential Fluid Selection	No, I will supply my own fluid!, 3-QTS of Lucas Oil SAE 80W-90 Plus Heavy Duty Gear Oil Recommended for TrueTrac, 3-QTS of Lucas Oil SAE 85W-140 Plus Heavy Duty Gear Oil, 3-QTS of Lucas Oil Synthetic SAE 75W-90 Differential Lube, 3-QTS of Lucas Oil Synthetic SAE 75W-140 Differential Lube, 3-Liters of AMSOIL 75W-90 Synthetic Gear Oil Recommended for all WaveTrac Diffs, 3-QTS of Amalie Hypoid Gear Multi-Purpose GL-5 Lubricant 75W-90, 3-QTS of Amalie Elixir TRI-VIS+ GL-5 75W-85W-140 Full Synthetic Gear Oil, 3-QTS of Lucas Oil Synthetic L9 7.5W Racing Gear Oil, 1-40oz Bottle of Kendal Limited Slip Additive Recommended for Eaton and Yukon Posi UNI
Vehicle YMM
Bolt Pattern	5 x 4 1/2" (Ford & Mopar), 5 x 4 3/4" (GM), 5 x 5" (Ford & GM), 5 x 5 1/2" (Ford), 6 x 5 1/2" (GM)
Uncategorized
Brand	Moser Engineering
Model Year	Year
12 BOLT MUSCLE PAK Applications	1955-57 Chevy (Tri-5), 1957-62 Corvette (Leaf Spring), 1962-67 Nova (Mono-Leaf), 1968-76 Nova (Mono-Leaf), 1968-76 Nova (Multi-Leaf), 1964-67 GM A-Body, 1968-72 GM A-Body, 1965-70 Impala, 1967-69 Camaro/Firebird (Mono-Leaf), 1967-69 Camaro/Firebird (Multi-Leaf), 1970-81 Camaro/Firebird (Multi-Leaf), 1982-92 Camaro/Firebird (Comes standard w/1350 series pinion yoke), 1993-03 Camaro/Firebird (Comes standard w/1350 series pinion yoke), 1978-87 G-Body (Grand National) (Comes standard w/1350 series pinion yoke), 1960-62 Chevy C-10 Pick Up Truck (NON-LEAF SPRING, WILL NOT WORK W/GMC TRUCKS), 1963-69 Chevy C-10 Pick Up Truck (NON-LEAF SPRING, WILL NOT WORK W/GMC TRUCKS), 1970-72 Chevy C-10 Pick Up Truck (NON-LEAF SPRING, WILL NOT WORK W/GMC TRUCKS), 1973-87 Chevy C-10 Pick Up Truck, 1988-98 GM 1500 Series Truck Rear End width Required Below*, 1999-06 GM 1500 Series Truck, 1988-04 S-10 2WD, 1988-04 S-10 4WD, BARE HOUSING
Custom Width & Pinion Offset Option (If Needed)	Custom Width & Pinion Offset
MUSCLE PAK Gear Ratio Options	3.08:1 Ratio - Pro/Street, 3.31:1 Ratio - Pro/Street, 3.42:1 Ratio - Pro/Street, 3.55:1 Ratio - Pro/Street, 3.73:1 Ratio - Pro/Street, 3.91:1 Ratio - Pro/Street, 4.11:1 Ratio - Pro/Street, 4.30:1 Ratio - Pro/Street, 4.56:1 Ratio - Pro/Street, 4.88:1 Ratio - Pro/Street, 5.13:1 Ratio - Pro/Street, 5.38:1 Ratio - Pro/Street, 4.11:1 Ratio - PRO (DRAG RACING ONLY), 4.30:1 Ratio - PRO (DRAG RACING ONLY), 4.56:1 Ratio - PRO (DRAG RACING ONLY), 4.88:1 Ratio - PRO (DRAG RACING ONLY), 5.14:1 Ratio - PRO (DRAG RACING ONLY), 5.38:1 Ratio - PRO (DRAG RACING ONLY), 5.57:1 Ratio - PRO (DRAG RACING ONLY), 5.86:1 Ratio - PRO (DRAG RACING ONLY)
12 Bolt Muscle Pak Upgrades	Powder Coated Rear Cover (Black), Aluminum Girdle, LubeLocker Gasket Upgrade, 1350 Series Pinion Yoke, 30 Spline Eaton Clutch Posi, 30 Spline Auburn Grip-N-Lock, 30 Spline Truetrac, 33 Spline Auburn Grip-N-Lock, 33 Spline Yukon Dura Grip Posi, 33 Spline Truetrac 3-Series (3.08-3.90 Ratio) (Lucas Mineral based oil w/ No Additives Recommended!), 33 Spline Truetrac 4-Series (4.11-5.38 Ratio) (Lucas Mineral based oil w/ No Additives Recommended!), 35 Spline Wavetrac (Amsoil AMS-FGRQT Recommended Fluid!), 35 Spline Spool, Gun-Drill Axles (Drag Racing ONLY), PRO-Flange (Drag Racing Applications ONLY), Lightening Hole (Drag Racing ONLY)
Stud Size	7/16" -20 x 1 1/4" (.480" Knurl), 7/16" x 20 x 2 7/8" (.480" Knurl), 7/16" x 20 x 1 3/4" (.475" Knurl/Disc Brake Stud), 1/2" x 20 x 1 1/2" (Screw-In), 1/2" x 20 x 2" (Screw-In), 1/2" x 20 x 3" (Screw-In), 12mm x 1 1/2" (.505" Knurl), 12mm x 2 1/2" (.505" Knurl), 1/2" x 20 x 1 1/2" (.620" Knurl), 1/2" x 20 x 3" (.620" Knurl), 1/2" x 20 x 1 3/4" (.620" Knurl/Disc Brake Stud), 5/8" x 11 x 2 1/2" (.685" Knurl/CIRCLE TRACK), 5/8" x 18 x 2 1/2" (.685" Knurl/CIRCLE TRACK), 5/8" x 18 x 2" (Screw-In), 5/8" x 18 x 3" (Screw-In), 14mm x 1 11/16" (.620" Knurl), 5/8" x 18 x 3" LOW-PROFILE (Screw-In)
MUSCLEPAK BRAKE UPGRADES	New Drum Brakes, Baer SS4 11.25" Drilled, Slotted & Zinc Finish w/Parking Brake (Black Caliper) 15" or Larger Wheel, Baer SS4 11.25" Drilled, Slotted & Zinc Finish w/Parking Brake (Red Caliper) 15" or Larger Wheel, Wilwood Forged Dynalite Rear Parking Brake Kit (Black PC 4-Piston Calipers, 12.19" Rotor), Wilwood Dynapro Low-Pro Rear Parking Brake Kit for 14" & 15" Rims (Black PC, 4-Piston Calipers, 11" Rotor), Wilwood Forged Dynalite Pro Series Rear Brake Kit (Black PC 4-Piston Caliper, 12.19" Rotor), Explorer Disc Brake Kit w/Internal Parking Brake, Explorer Disc Brake Kit w/Internal Parking Brake & Drilled Rotors, "ECONOMY" Disc Brake Kit (Single Piston Caliper, 11" Rotor), "ECONOMY" Disc Brake Kit w/Parking Brake (Single Piston Caliper, 11" Rotor), Wilwood Forged Dynalite Rear Drag Brake Kit, Moser Dynamic Drag Brake Kit
Additional Brake Upgrades	Wilwood Only Cross-Drilled & Slotted Rotor Upgrade (SRP Black Anodized Rotor & Hat), Wilwood Red Powder Coated Calipers, Wilwood Polished Calipers
Suspension Upgrades	No Upgrades, 1982-02 GM F-Body Sway Bar Mounts (30" on center), 1982-02 GM F-Body Adjustable Lower Control Arm Brackets, 1964-72 GM A-Body Adjustable Lower Control Arm Brackets (FOR OEM SHOCKS), 1964-72 GM A-Body Coil-Over & Adj Lower Control Arm Bracket Kit (For use with Coil-Over Shocks using 1" Bearings ONLY), 1978-87 GM G-Body Adjustable Lower Control Arm Brackets (FOR OEM SHOCKS), 1978-87 GM G-Body Coil-Over & Adj Lower Control Arm Bracket Kit (For use with Coil-Over Shocks using 1" Bearings ONLY), 1979-2004 Ford Mustang Adjustable Lower Control Arm Brackets, 1979-2004 Ford Mustang Spherical Upper Control Arm Bearings, 2005-2014 Ford Mustang Adjustable Lower Control Arm Brackets, 2005-2014 Ford Mustang Spherical Upper Control Arm Bearings
Coil-Over Options	No Coil Overs, 1964-72 A-Body (Chevelle) Single Adjustable Coil-Over Kit - Moser/Afco 7" Stroke (Includes 72807234A Chassis Mount), 1964-72 A-Body (Chevelle) Double Adjustable Coil-Over Kit - Moser/Afco 7" Stroke (Includes 72807234A Chassis Mount), 1977-88 G-Body (Grand National) Single Adjustable Coil-Over Kit - Moser/Afco 7" Stroke (Includes 72807232G Chassis Mount), 1977-88 G-Body (Grand National) Double Adjustable Coil-Over Kit - Moser/Afco 7" Stroke (Includes 72807232G Chassis Mount)
COIL-OVER SPRING RATE (ONLY SELECT IF PURCHASING COIL-OVER PACKAGE)	No Coil-Over Package, 125 LBS, 150 LBS, 175 LBS, 200 LBS
Powder Coat Options (Housing Only)	NO POWDER COAT, Flat Black, Semi-Gloss Black, Gloss Black, Mirror Red, 1-Coat Silver, Speedway Black, Speedway Gray, Chevy Orange, Moser Red, Silver Sparkle (Black Base Coat w/Silver Metallic Flake)
Shipping Details:
Weight:	4.44 lb
Length:	1.0 in
Height:	1.0 in
Width:	1.0 in

Moser Engineering 12-Bolt MUSCLEPAK Rear End Fully Assembled 12-BOLTMUSCLEPAK

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12 BOLT MUSCLEPAK