3.55 ratio Gen5 differential into Gen4 swap info

frankthedude

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I was looking at options for better gearing on my 2008 with the 3.07 ratio. I was fortunate to source a Gen5 3.55 diff and axles. I had to reuse the front diff bushings/ diff mounting bolts and the hardware from the Gen5 axles but everything bolted up perfectly. I found the Gen5 diff much easier to install than the Gen4 (more components to work around on the rear suspension assembly). Driveshaft bolted up the same on the Gen5 vs. Gen4.
Logically the Gen3/4/5 diff & axle assembly's are forward/backward compatible as long as the diff & axles match.
I forgot to note the torque specs but i believe I went with:
CV axle nut & Diff mounting bolts tq ~90ftlbs
CV bolts tq ~40ftlbs + Red locktite
Driveshaft strap bolts 28ftlbs + Red locktite

*Pictures of the Diff & Axle differences are attached as well. I hope this helps the next person.

Information is a little hard to come by but this is something I found on this forum somewhere and saved it
(Posted by Garron on 10/23/2011)

2008-2010 Viper hardware tq specs


FRONT SUSPENSION

DESCRIPTION N·m Ft. Lbs. In. Lbs.
ABS Tone Wheel Mounting Bolt 17 13 150
Brake Caliper (Hydraulic) Mounting Bolts 115 85 —
Hub And Bearing Mounting Bolts 61 45 —
Lower Ball Joint Castle Nut 160 118 —
Lower Control Arm Pivot Cam Bolts 102 75 —
Lower Spring Seat Locking Screw - ACR Adjustable Shock 2 — 18
Shock Assembly Mounting Bolts (Lower and Upper) 136 100 —
Stabilizer Bar Bushing Retainer Bolts 68 50 —
Stabilizer Link Control Arm Nut 23 17 200
Stabilizer Link Stabilizer Bar Nut 23 17 200
Tie Rod Knuckle Nut 75 55 —
Tie Rod Adjuster Jam Nut 75 55 —
Upper Ball Joint Castle Nut 102 75 —
Upper Control Arm Frame Bolts 102 75 —

Driveline

DESCRIPTION N·m Ft. Lbs. In. Lbs.
Axle Hub Nut 257 190 -
U-Joint Strap Bolts 38 28 -
Differential Drain Plug 20 15 -
Differential Fill Plug 20 15 -
Differential Cover Bolts 47 35 -
Pinion Nut 298 - 380 220 - 280 -
Bearing Cap Bolts 88 65 -
Ring Gear Bolts 122 - 150 90 - 110 -
Frame Mounting Bolts 135 100 -
Pinion Mounting Bolts 108 80 -

BRAKES

DESCRIPTION N·m Ft. Lbs. In. Lbs.
Adjustable Pedals Mounting Nuts 28 21 250
Adjustable Pedals - Accelerator Mounting Nuts 12 — 105
Brake Hose (To Caliper) Banjo Bolt 31 23 —
Brake Tube Nuts 17 12 145
Caliper Bleeder Screw 10 — 88
Caliper (Hydraulic) Mounting Bolts 115 85 —
Master Cylinder Mounting Nuts 28 21 250
Parking Brake Cable Routing Clamp Bolts 10 — 90
Parking Brake Caliper Mounting Bolt - Upper (Inner Hex Head) 32 24 —
Parking Brake Caliper Mounting Bolt - Lower 52 38 —
Parking Brake Lever Mounting Nut/Bolt 25 19 225
Power Brake Booster Mounting Nuts 28 21 250
Wheel Mounting (Lug) Nuts 135 100 —

CLUTCH

DESCRIPTION N·m Ft. Lbs. In. Lbs.
Clutch Bleed Screw 18 13 -
Pressure Plate Bolts 75 55 -
Clutch Release Bearing 20 15 -
Flywheel Bolts 75 55

COOLING

DESCRIPTION N·m Ft. Lbs. In. Lbs.
Nut, Accessory Drive Belt Tensioner 41 30 -
Bolts, A/C Condenser to Radiator 5 - 45
Bolts, Coolant Pressure Bottle 5 - 40
Bolts, Radiator Mounting 11 - 95
Bolts, Thermostat Housing 11 - 95
Bolts, Water Pump 11 - 95

ENGINE

A/C Compressor Mounting Bolts 23 17 -
A/C Compressor Bracket Bolts 28 21 -
A/C Line Support to Oil Pan 9 - 80
Accessory Drive Idler Pulley 54 40 -
Accessory Drive Belt Tensioner 41 30 -
Air Cleaner Cover Bolts 8 - 70
Bell Housing Bolts 54 40 -
Camshaft Position Sensor Bolt 9 - 80
Camshaft Drive Plate Bolts
Center Bolt - m10 65 48 -
Outer Bolts - m6 12 - 106
Camshaft Sprocket/Phaser Bolt 165 121 -
Camshaft Thrust Plate Bolts 12 - 106
Capacitor Bolt 9 - 80
Coil Cover Bolts 10 - 89
Connecting Rod Cap Bolts 45 + 45° 33 + 45° -
Coolant Temperature Sensor 18 - 159
Crankshaft Main Bearing Cap Bolts (Refer to 09 - Engine/Engine Block/CRANKSHAFT - Installation)
Crankshaft Oil Scraper Nuts 28 13 -
Crankshaft Position Sensor 9 - 80
Crankshaft Position Sensor Heat Shield Nut 7 - 62
Crankshaft Pulley Bolts 23 17 -
Crankshaft Vibration Damper Bolt 339 250 -
Cylinder Head Bolts (Refer to 09 - Engine/Cylinder Head - Installation)
Cylinder Head Cover Bolts 11 - 95
Cylinder Head Cover Baffle Bolts 6 - 45
Engine Ground at Alternator Bolt 12 - 106
Exhaust Manifold Bolts 29 21 -
Exhaust Pipe V-Band Clamp 11 - 100
Engine Mount to Block Bolts 61 45 -
Engine Mount Insulator Nut 102 75 -
Flywheel Bolts 75 55 -
Fuel Rail Bolts 10 - 89
Generator Mounting Bolts 47 35 -
Ignition Coil Bolts 5 - 44
Inspection Cover Bolts 9 - 80
Intake Manifold Bolts 13 - 95
Oil Cooler Mounting Bolts 5 - 44
Oil Control Valve Bolts 9 - 80
Oil Cooler Line Fittings 25 18 -
Oil Pan Bolts
Oil Pan to Rear Seal Adapter - M6 12 - 106
Oil Pan to Block and Front Cover - M8 28 21 -
Oil Pan Baffle Bolts 12 - 105
Oil Pan Drain Plug 34 25 -
Oil Pressure Relief Valve Cartridge 25 18 -
Oil Pump Cover Bolts 12 - 105
Oil Pump Swinging Pick-up Assembly 28 21 -
Oil Pump Pick-up Pivot Bolt 14 - 124
Oil Pump - Up Tube Bolts 28 21 -
Oil Filter 18 13 -
Oil Pressure Sensor 9 - 80
Oil Temperature Sensor 18 - 160
Up Stream Oxygen Sensors 68 50 -
Power Steering Pump Mounting Bolts 28 21 -
Crankshaft Rear Oil Seal Retainer Bolts 11 - 97
Rocker Arm Bolts 32 24 -
Spark Plugs 19 14 -
Starter Mounting Bolts 54 40 -
Thermostat Housing Bolts 8 - 70
Throttle Body Bolts 11 - 95
Timing Chain Cover Bolts 28 21 -
Water Pump Mounting Bolts 11 - 95

REAR SUSPENSION

DESCRIPTION N·m Ft. Lbs. In. Lbs.
Brake Caliper (Hydraulic) Mounting Bolts 115 85 —
Hub And Bearing Mounting Bolts 149 110 —
Hub Nut 325 240 —
Lower Ball Joint Castle Nut 160 118 —
Lower Control Arm Frame Pivot (Cam) Bolts 102 75 —
Lower Spring Seat Locking Screw - ACR Adjustable Shock 2 — 18
Parking Brake Caliper Mounting Bolt - Lower 52 38 —
Parking Brake Caliper Mounting Bolt - Upper 32 24 —
Shock Assembly Lower Mounting Bolt 136 100 —
Shock Assembly Upper Mounting Bolt 136 100 —
Stabilizer Bar Bushing Retainer Bolts 91 67 —
Stabilizer Link Nuts 23 17 200
Toe Link Adjuster Jam Nut 75 55 —
Toe Link Inboard Mounting Bolt 75 55 —
Toe Link Outboard Mounting Bolt Nut 75 55 —
Toe Link Knuckle Nut 75 55 —
Upper Ball Joint Castle Nut 102 75 —
Upper Control Arm Frame Pivot Bolts 102 75 —

STEERING

DESCRIPTION N·m Ft. Lbs. In. Lbs.
Cooler Mounting Screws 5 3 40
Gear Mounting Bolts 203 150 —
Hose Tube Nuts - At Cooler 15 11 130
Hose Tube Nuts - All Others 28 21 250
Pump Mounting Bolts 31 23 —
Reservoir Mounting Screw 12 9 106
Tie Rod Adjuster Jam Nut 75 55 —
Tie Rod Knuckle Nut 75 55 —


STEERING COLUMN
DESCRIPTION N·m Ft. Lbs. In. Lbs.
Driver Airbag Mounting Screws 12 — 105
Intermediate Shaft Pinch Bolts 49 36 —
Intermediate Shaft Extension Pinch Bolt 49 36 —
Intermediate Shaft Extension Bearing Mounting Bolts 17 — 150
Steering Column Mounting Nuts 17 — 150
Steering Wheel Retaining Bolt 54 40 —

TRANSMISSION

DESCRIPTION N·m Ft. Lbs. In. Lbs.
Drain Plug 27 20 -
Fill Plug 27 20 -
Clutch Housing Bolts 34 25 -
Clutch Release Bearing Bolts 12 9 -
Shifter Assembly 20 15 -
Top Cover Bolts 20 15 -
Extension Housing Nuts 48 35 -
Extension Housing Bolts 48 33 -
Adapter Bolts 34 25 -
* Side Shift Detent 40 30 -
* Roller Detent Bolt 40 30 -
Back Up Lamp Switch 34 25 -
Skip Shift Solenoid 34 25 -
Reverse Lockout Solenoid Bolt 18 13 -
Guide Plate Bolts 22 16 -
*Shift Lever Guide Bolts 27 20 -
* Reverse Idler Bracket Bolts 30 22 -
*Flywheel Bolts 74 55 -
Transmission Crossmember Bolts 61 45 -
Transmission Mount Bolts 41 30 -
Top Four Transmission To Engine Bolts 41 30 -
Bottom Two Transmission To Engine Bolts 68 50 -
Transmission To Oil Pan Bolts 30 22 200
Dust Shield Bolts 11 - 95
*U-joint Clamp Bolts 38 28 -
* Needs application of Mopar Lock AND Seal Adhesive or equivalent

BODY

Description N·m Ft. Lbs. In. Lbs.
Convertible top center/3 bow bolts 5 — 45
Convertible top center/4 bow bolts 6 — 55
Convertible top cloth support panel screws 5 — 45
Convertible top header assembly balance link shoulder bolts 20 15 —
Convertible top header assembly rear rail bolts 18 13 —
Convertible top latch screws 9 — 80
Convertible top lower side arm linkage bolts 28 21 —
Convertible top lower side arm linkage support bracket bolts 12 9 —
Convertible top seal compression panel screws 5 — 45
Convertible top tack strip nuts 12 9 —
Decklid hinge bolts 28 21 —
Decklid latch bolts 12 9 —
Decklid latch striker bolts 12 9 —
Decklid lock cylinder nut 12 9 —
Door glass screws 4 — 35
Door hinge bolts 37 27 —
Door latch screws 12 9 —
Door outside handle bolts 5 — 45
Door window regulator nuts 12 9 —
Fender support fasteners 17 13 —
Fuel filler door screws 7 — 65
Hood hinge to body bolts 28 21 —
Hood hinge to hood bolts 12 9 —
Hood latch nuts 12 9 —
Instrument panel left mounting bracket bolt AND nut 28 21 —
Instrument panel lower front mounting bolts 12 9 —
Instrument panel mounting nuts 28 21 —
Quarter panel door sill screws 6 — 55
Quarter panel rear screws 6 — 55
Quarter panel to fascia screws 6 — 55
Quarter panel top screws 6 — 55
Side view mirror nuts 7 — 65
Trunk pan bolts - fuel pump cover area 9 — 80
Trunk pan front support bracket nuts 12 9 —
Trunk pan outside bolts 6 — 55
Trunk pan trunk area bolts 28 21 —
Trunk pan wheelhouse bracket bolts 6 — 55
Windshield header AND a-pillar weatherstrip nuts 6 — 55
 

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99RT10GTS

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Thank you very much!!! Don't suppose you videoed the whole process too?
 
Last edited:

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