4x4 & Off Road Engines Reviews

Jeep 4.0L vs 4.6L Stroker

I am building a 4.6L stroker (4.0L with a 4.2L crank and rods) for my 1994 Cherokee Sport and... » Read More

Best Aluminum Radiator Upgrade for Wrangler

I have 1994 Jeep YJ with a 4.0L HO straight six engine and three-speed automatic transmission.... » Read More

4.0L Head Swap on a Jeep 258 4.2L Engine

I’m having the 4.2L 258 in my 1985 Jeep CJ-7 rebuilt by a local machine shop. The shop just... » Read More

Chevrolet Performance Silverado Intake and Exhaust Install

Unless you have really deep pockets or have the ability to throw caution to the wind, most of us... » Read More

Jeep Gladiator JT Supercharger Kit from Hamburger's Superchargers

With a curb weight of 4,672 pounds, the wonderfully versatile but nonetheless large Gladiator... » Read More

50-State-Legal Walker Jeep Catalytic Converter Swap

Jeepers who have to pass emissions tests usually know that exhaust modifications downstream of... » Read More

Part Eleventy-Hundred of Our 1969 Bronco Build

Sadly, our Early Bronco project has been languishing. That’s for a few reasons, and not all... » Read More

BluePrint Engines 306ci Bronco Edition Crate Engine

My Boy Blue!... » Read More

Junkyard Fuel Injection Conversion

Junkyard Fuel-Injection Conversion for Almost Any V-8... » Read More

Jeep Six-Cylinder 4-1-1

The lowdown on all Jeep six-shooters... » Read More

Installing the Newest, Nicest Cummins R2.8 Turbo Diesel in the Oldest, Ugliest Jeep

Part 5: The Cummins Has Landed... » Read More

Nuts & Bolts: Vortec Retrofit

A reader asks for advice on replacing the seized engine in his 1998 Chevy 4WD dualie.... » Read More

Installing Edelbrock’s Performer Truck 5.0 Intake And BBK’s Twin Power Plus Series Throttle Body On A 5.0L 1991 Bronco

Edelbrock Performer Truck 5.0L intake manifold and 61mm BBK Power Plus Series throttle body adds... » Read More

TJ LS1 V-8 Conversion: Part 1

We pull a 4.0L I-6 out of a 2000 Jeep TJ Wrangler and plant a 5.7L Camaro LS1 V-8 in its place.... » Read More

aFe Power MACH Force XP 2.5-Inch After-Cat Exhaust System for 2007-2016 Jeep Wrangler

We install an aFe Power MACH XP after-cat exhaust on our 2012 Jeep Wrangler.... » Read More

Clean Air: Good For Tree Huggers and Engines

Jeep engines (all engines, really) need cool air to run at their best, but if that air is not... » Read More

How To Gain Back Acceleration After Adding Larger Tires

To gain back some of the acceleration we lost when we added larger tires to our LJ, we add power... » Read More

Gibson Performance after-cat exhaust system installed in 2001 Toyota Tacoma

We install a Gibson Performance after-cat exhaust system on our 2001 Toyota Tacoma to increase... » Read More

Barn-Find 1972 Jeep Wagoneer Road Trip

We buy a pristine 1972 Jeep Wagoneer, which you can see in an episode of Dirt Every Day.... » Read More

Cheap Truck CJ5 repairs lead to larger tires and no engine.

Rob Peterson's CJ5 from Cheap Truck Challenge 2015 goes from poorly-running inline four to... » Read More