4x4 & Off Road Transmission and Drivetrain

Transmission & Drivetrain

NV4500 Five-Speed Transmission Clutch Upgrade - Holding Power

Ben Battles March 3, 2015

A buddy scored a clean, low-mileage Cummins-powered second-generation Ram a few months back,... » Read More

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Transmission & Drivetrain

2005 Dodge Power Wagon Dynatrac Free-Spin Kit Install - Problem Solved

Ken Brubaker January 7, 2015

The Free-Spin kit for our Power Wagon came with everything needed to ditch the factory unit... » Read More

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Transmission & Drivetrain

HD NP242 Transfer Case Build - Super-Duty NP

Pete Trasborg January 6, 2015

So our little birdy Mike went on to weave this yarn of a stew made from Jeep NP242 parts mixed... » Read More

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Transmission & Drivetrain

1997 Jeep TJ Transfer Case Shifter Upgrade - T-Case Oh-Shift!

Fred Williams December 24, 2014

We got out of the rocks after a friend crawled under and shifted the case into low again, but we... » Read More

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Transmission & Drivetrain

(Un)Common Trail Maladies - Kopycinski's Brain

Jay Kopycinski October 31, 2014

Surviving off-road is all about the weakest link. Whether you’re racing the Baja 1000 or just... » Read More

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Transmission & Drivetrain

Mating the SM420 to an AMC Four-Cylinder - Granny Gearing

Verne Simons October 22, 2014

For years, old-school Jeepers have been collecting, coveting, and adapting granny-geared... » Read More

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Transmission & Drivetrain

Straightening A Bent Dana 44 Axle - Get Bent

Verne Simons October 9, 2014

To add on to the long line of “oops” moments we’ve had, we recently realized that a... » Read More

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Transmission & Drivetrain

East Coast Gear Supply Bolt-In Dana 44 - An Ox Out Back

Ali Mansour October 6, 2014

For our Dana 44A replacement, we wanted an axle capable of handling V-8 power, remain stock... » Read More

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Transmission & Drivetrain

1998 Jeep Grand Cherokee ZJ - NP242 HD SYE Transfer Case

Ali Mansour October 3, 2014

Unlike the NP231, which has a wide array of gearing, shifter, and fixed-yoke options, the NP242... » Read More

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Transmission & Drivetrain

Is It Time To Replace Our Jeep Wrangler JK Axles? - Whipped Differentials

Pete Trasborg October 1, 2014

When Trasborg inherited Jp magazine’s JK, the keys were handed to him by former- Editor Hazel.... » Read More

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Transmission & Drivetrain

1997 Jeep Wrangler Axle Upgrade - Easy Rearend

Pete Trasborg August 28, 2014

Since we don’t setup gears every day, it can sometimes take a while. This Jeep is a... » Read More

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Transmission & Drivetrain

Jeep JK Wrangler Stock Dana 44 Axle - Upgrade Or Replace?

Cole Quinnell August 27, 2014

The two primary deciding factors in the upgrade or replacement dilemma are tire size and abuse.... » Read More

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Transmission & Drivetrain

2000 Jeep Wrangler TeraFlex 4:1 T-Case Upgrade

Ali Mansour August 8, 2014

Equipped with a 2.5L engine, AX-5 five-speed manual, NP231 T-case, locked Dana 44 axles, and... » Read More

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Transmission & Drivetrain

Step-By-Step Pinion Seal Replacement - Anti-Ooze

John Cappa July 25, 2014

No matter what 4x4 you have, how new it is, or what axles are in it, you’ll eventually end up... » Read More

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Transmission & Drivetrain

1995 Jeep Cherokee XJ - NP231 Transfer Case Upgrade - Advanced Driveline

Dan Sanchez July 8, 2014

The NP231 transfer case is a rugged, reliable, and durable unit that has been used in a variety... » Read More

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Transmission & Drivetrain

2004 Toyota 4Runner - ARB Air Locker Install - Selectable Solutions

Kevin Blumer July 3, 2014

When locked, the Air Locker becomes a spool, turning the axleshafts in perfect unison. Street or... » Read More

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Transmission & Drivetrain

Jeep Wrangler JK Junkyard JK Axle Swap - Part 3

Ali Mansour June 30, 2014

Using a 2007 Jeep Wrangler Unlimited Rubicon as our test vehicle, we installed a set of used... » Read More

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transmission-drivetrain

Jeep Wrangler JK Junkyard Axle Swap - Part 2

Ali Mansour June 11, 2014

This month, we are moving out back to install the Sterling 10.5-inch rear axle that we grabbed... » Read More

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Transmission & Drivetrain

2004 Toyota Tacoma 4x4 - Solid-Axle Solution

Chris Fox June 9, 2014

One of the biggest challenges when installing a solid axle under a rig originally equipped with... » Read More

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