Posts Tagged ‘Engine Conversion’

The truck entered the Kustom Truck shop a little over 2 weeks ago as a 1988 Peterbilt 379 Extended Hood with a 3406B model Caterpillar engine that was no longer CARB compliant to run in the state of California.  After the engine conversion the Pete left with an 07 platform Cummins ISX engine complete with DPF, compliant through 2023 in California.

With the project complete there is not much left to say other than thanks for following along.  Here’s some pics of the final project before it left on it’s way back to it’s owners Galindo Construction.

Now that the 3rd segment of Kustom Truck converts a 1988 Pete 379 to meet the California Air Resources Board compliance through the year 2023 is complete, let’s show what was done.  In the 3rd part we dedicated it solely to the Diesel Particulate Filter (DPF) integration into the chassis since this is such a major part of the project.  Not taking anything away from the engine conversion cause that was a huge hurdle to overcome in itself.  To complete the engine swap to include plumbing and wiring took roughly a weeks worth of labor, no small task.  The most labor intensive was obviously the wiring since the chassis came with a mechanical engine and had to be converted to accept an electronic motor that the cab was able to communicate with for all the necessary engine monitoring functions.  With that said it’s time to detail how the DPF was installed and take you through the process.

First things first a mounting location had to be chosen to house the DPF.  Where to put the large filter assembly that’s roughly 45″ in length? The passenger side step box …

We chose to custom build a step box that would be located on the passenger side of the cab, just below the door and replace the existing factory box.  The inlet comes in the front side of box through 7″ hole

The back side of the new step box was left open so we have easy access to the DPF filter as well as heat transfer and to provide an easy outlet so we can tie back into the factory exhaust system.

Once Kustom Truck bolted the step box back into the existing location of the old box it was time for a mock up of the DPF to make certain fitment and dimensions were adequate with no clearance issues

Now that the custom step box along with the DPF filter are in place it’s time to get to work on plumbing and piping to get the exhaust from the engine and out the exhaust pipes.  The turbo down pipe was first, the pipe runs down the inside of the frame rail and exits just behind the rear leaf spring hanger.

After some carefully placed bends the pipe was ready to be welded up and attached to the inlet of the DPF filter located inside the step box.

The DPF is bolted into place, the plumbing is complete, all exhaust has been custom bent and hooked up

Here is a shot from under the cab so you can see the DPF mounted in the box from the backside.

There was some custom pipe bending that had to take place in order for the DPF outlet to hook up to the factory Y-Pipe in order to make the exhaust fully functional

And finally a few shots of how the project looked once the lid was installed back on the step box.

Only one more phase of the project is left, Part 4.  In the final stage Kustom Truck will show you the conversion as a completed project, only a few loose ends still need to be tied up before we start the truck and take it on the test drive.

Now that is how a DPF should look! Stay tuned Part 4 will come early next week ….

Kustom Harness Products has introduced a full line of electronic interface wire harness products for Caterpillar®, Cummins®, Detroit®, Eaton Fuller®, and Allison® that make a HD truck engine conversion or transmission swaps and installations a reality.

Kustom Harness Products builds custom engine monitoring station and dash assemblies to provide complete control and monitoring of one or more engines. This type of design is well suited for portable power generation stations, pump stations, oil field equipment and other applications that require start up and monitoring of the engines from a common remote location. The dash panels provide for the installation of gauges, controls, switches, lighting and other engine monitoring and control functions. All design options include harnessing, sensors, gauges, lighting and switches pre-wired and built to customer specifications for true plug and play installation.

“We purchased a complete dash panel and 3406E Caterpillar electronic engine including the wire harness interface for a late 1960’s B70 Euclid haul truck that came from the factory OEM with a mechanical 12v71 Detroit. The engine and dash panel hookup was 100% drop in plug and play as advertised,” said Andy Wolfe of SKW, a division of ASRC Construction Holding Co. based out of Alaska. Mr. Wolfe continued, “This project would have taken our shop weeks of labor without the dash panel and wire harness from Kustom™ Harness Products, they make the installation process so easy we just recently completed our 7th conversion using their Kustom™ Harness Products package”

Kustom Harness Products offers a complete installation kit for 1994-2010 CAT, Cummins or Detroit electronic engines and Gen 3 and Gen 4 Allison & Fuller automated transmissions. All installation conversion kits include an engine or transmission harness, cab harness, all required sensors, indicator lights, switches, feature labels, detailed installation diagram, and tech support line for guidance during installation. All of the Kustom™ Harness Products harness packages are built to the OEM’s recommendations for electronic engine control and transmission control. The benefit to this design is that all future diagnostics and troubleshooting is supported by the engine or transmission OEM’s service and support literature.
Some engine family swaps are similar in control and when applicable Kustom™ Harness Products offers harness modifications or adapters. Modifications and adapter conversions need to be evaluated on a case by case basis, but are both cost effective and require minimal labor to install.

Kustom Products Inc. is an ISO 9001:2008 certified company that specializes in the design, engineering and manufacturing of OEM quality engine and transmission conversion/installation packages for Caterpillar®, Cummins®, Detroit Diesel® and Allison®. Kustom Harness Products also specializes in the design and manufacturing of complex multi-engine control and harness packages that offer central control of automated engines and transmissions from a central or consolidated engine monitoring station or control panel. Kustom™ Harness Products offers a solution for all electronic interfaces, whether you are performing a simple OEM level repower solution to meet EPA emission requirements, have a desire for an engine or transmission upgrade or conversion, or a complex OEM level complete plug and play harness and engine monitoring package. Kustom™ Harness Products can simplify the installation process with the best quality products available in the market. For more information visit or call 888.564.8890.

Kustom Harness Products is a division of Kustom Products Inc