8 Essential Tools You’ll Need for a Cummins Swap 

Doing a Cummins engine swap is a big project, but it can be tackled confidently with the right preparation and tools. Whether you’re dropping a 5.9L or 6.7L Cummins into a Ford, Chevy, Dodge, or even a Jeep, the tools you bring to the job will either make your life easier or cause endless frustration.

In this guide, we’ll break down the must-have tools, recommended extras, and what you can skip to complete your Cummins engine conversion successfully without overloading your tool cart or budget.

Essential Tools You Need

1. Engine Hoist or Cherry Picker

You’ll need a heavy-duty engine hoist—preferably one rated at 2 tons or more—to safely lift and lower the Cummins engine. These engines are heavier than gas motors, and attempting a swap without a strong hoist is dangerous and unrealistic. If possible, use a load leveller attachment to tilt the engine for easier positioning.

2. Basic Socket and Wrench Set (Metric & SAE)

A full set of metric and standard sockets and wrenches is a must. You’ll encounter both sizes throughout the project, especially if you’re combining Cummins parts (usually metric) with an older Ford or GM platform (which may use SAE). Deep sockets, breaker bars, and extensions will all come in handy.

3. Torque Wrench

Precision matters—especially when torquing flywheel bolts, transmission adapters, and engine mounts. Get a reliable torque wrench with a range up to 250 ft-lbs for drivetrain components and a smaller one for lighter fasteners.

4. Drill and Step Bits

You’ll likely need to drill into the frame, firewall, or transmission crossmember to mount new brackets or route wiring. Step bits make quick work of sheet metal and help you enlarge existing holes cleanly.

5. Cutting Tools (Grinder, Sawzall, or Cutoff Tool)

Sometimes things just don’t fit—this is where cutting tools become essential. A good angle grinder with cut-off wheels or a Sawzall can help you remove old mounts, modify crossmembers, or trim firewall sheet metal.

6. Floor Jack and Jack Stands

Supporting the transmission during alignment, adjusting motor mounts, or working under the vehicle all require sturdy jack stands and a solid floor jack. Safety should never be compromised here.

7. Multimeter and Electrical Tools

For wiring the ECM, sensors, and gauges, a multimeter is indispensable. Pair it with basic wiring tools like crimpers, heat shrink, electrical tape, and terminal connectors for a clean, functional harness setup.

8. Fuel Line Disconnect Tools & Hose Clamps

If you’re replacing the factory fuel system, you’ll need fuel line tools to disconnect Ford, GM, or Dodge fittings cleanly. Keep a variety of hose clamps, fittings, and extra hose on hand for routing your return and supply lines for the CR Cummins.

Helpful Tools That Make the Job Easier

• Engine Stand

Having your Cummins mounted on an engine stand makes pre-install work, like installing the adapter plate, clutch, or oil pan, much easier. It’s not required, but it can save time and back strain.

• Transmission Jack

If you’re installing the ZF5 or NV4500 separately from the engine, a transmission jack helps guide it into place with far more control than a floor jack. This is especially helpful when aligning the input shaft to the clutch.

• Shop Crane Scale

If you’re concerned about your front suspension sagging with the added weight of the Cummins, weighing the engine before the swap helps you plan properly.

• Tap and Die Set

When dealing with older parts or adapting custom brackets, it’s common to run into stripped or dirty threads. A tap and die set can save hours and preserve hardware that would otherwise be junk.

• Work Light or Headlamp

You’ll be working in dark engine bays, under trucks, and behind dashboards. A good LED work light or headlamp is essential when visibility gets tight.

What You Can Skip (Or Rent)

• Speciality Engine Alignment Tools

Most Cummins-to-transmission adapter kits are machined precisely and don’t require special alignment tools. So, unless you’re doing a full rebuild or custom fab work, you can skip these.

• TIG Welder

While welding is often helpful, especially for motor mounts or exhaust modifications, it’s not required if you’re using bolt-in Cummins conversion parts. Many companies offer weld-free kits that simplify the swap.

• Lift (Post or Scissor)

A vehicle lift is nice to have—but not mandatory. Plenty of successful Cummins swaps are done in home garages or driveways using a creeper and jack stands. Don’t delay your project just because you don’t have a lift.

• Scan Tools for Ford or GM

Unless you’re keeping your factory ECM active (rare in Cummins conversions), high-end OBD-II scanners for your old powertrain aren’t necessary. Focus on tools that help you troubleshoot the Cummins ECM instead.

Final Thoughts

Swapping in a Cummins engine is more about preparation and patience than owning every fancy tool in the catalog. Focus on gathering the essential tools that directly contribute to mounting, wiring, and aligning the engine and transmission. When it comes to tools like a lift or welder, look into borrowing, renting, or working with a friend who has a better-equipped shop.

Most importantly, invest in high-quality Cummins conversion parts from reputable vendors to minimise the need for unexpected fabrication. Having the right tools—and knowing what you can safely skip—means fewer delays, fewer headaches, and a smoother, safer conversion process.

Would you like a printable checklist of these tools and parts for your workspace or garage planning?