CHOATE 6.7 Daily Driver Long Block Engine - 2019-2024 Dodge RAM 6.7L Cummins - CEP67CLD1924

Part # CEP67CLD1924

The 2019 and newer Cummins engines have become infamous among diesel owners—widely considered the “dark ages” of the platform due to significant reliability issues. From camshaft failures to weakened engine blocks, these trucks haven’t lived up to the legacy Cummins is known for.

That’s why at Choate Engineering Performance, we don’t just repair—we completely overhaul and restore the durability you expect. After extensive R&D, we determined the best solution is to retrofit the entire engine back to the reliable 2018 platform.

We replace the problematic lightweight 2019+ block (which is 75 lbs lighter due to material being removed from critical areas) with the solid cast iron block used in 2018 models—a major step in restoring strength and longevity.

Instead of using the roller lifters and matching camshaft found in 2019+ models, we install the more proven flat tappet lifters and 2018 camshaft. This, along with other trusted 2018 parts, ensures your build holds up like the Cummins name should.

 What We Do Differently:

 2018 Cast Iron Block – No more thin, lightweight block from 2019+
 Flat Tappet Lifters – Replacing roller lifters that commonly fail
 2018 Camshaft – Better reliability and wear resistance
 Critical Material Restored – No weakened components from weight cuts
 2019+ Parts Only Used for Fitment – Everything else retrofitted for strength
 Proven R&D – Backed by hours of testing and discussion (watch full breakdown in the podcast below)

Choate Engineering Performance restores the power and trust you’ve always counted on—the right way.

This 6.7L Cummins 2019-2024 Reman Diesel Engine Includes:

• Choate Billet Freeze Plugs
• Oversized New Upgraded Valve Seats
• *Blow Proof* Threaded Soft Plugs in Cylinder Head (See Video)
• New Oil Pump
• All New Iron Matrix Valve Guides
• Install New Valve Seals
• Test Spring Tension
• New Oversized Seats  *(See Video)
• Head Studs
• Full CNC blue print machining, (bore, deck, hone and line honed). The Cylinder bores are blue print bored to a true 90 degrees from the crankshaft center line, prior to being diamond honed to within .0002 inch for precise piston to cylinder bore clearances. *(See Video)
• The main housing is honed to precisely align the crankshaft in the engine block. The Cylinder walls are bored 90 degrees over the crankshaft center line. The piston diameter measured to the nearest .0001 inch matched to cylinder bores. *(See Video)
• Balanced and Matched Rotational Assembly (See Video)
• New upgraded Pistons
• New pistons rings
• New Pin retainers
• New OE tappets
• Crankshaft is Polished and ground to .0005 concentricity or less
• New Rod bearings
• New Main Bearings
• New Cam Bearing
• Install Rear Main Seal
• Install New Rear Cover Gasket
• Install Lower Oil Pan Gaskets
• Install Pickup Tube O-ring
• Rear Cover Installed
• 5 Year/100K Mile Warranty

Choate Engineering Performances Head Department - Watch this video to learn more about our cylinder head machining processes.

See how we keep from catastrophic failures happening from the coolant plugs on the Cummins.

What is Torque Plate Honing? How it can decrease oil your oil changes as well as gain performance!

Be sure that your new engine is square decked, click the link to see why this is so important!

Balancing isn’t a myth, it isn’t hype, it’s science and there is no doubt the benefits of it. Check out this video!

 So which engine is right for you? Check out this Q and A about the differences between the Workhorse and the Daily Driver.

Common Issues With The Cummins 6.7L Block and Heads (and how we fix them)

Check out this video with Cass. He explains the issues and the fixes of the Cummins platform. (And How we fix them.)

Cylinder Heads- While there aren’t as many issues with the bottom end of the Cummins, there are really BIG problems in the head department.

Valve seats fallout contacting the piston and cause catastrophic failure. We machine oversize valve seats within creased press fit area to remedy this issue.

Stamped gallery plugs in the heads blow out causing a mixture of oil and coolant, destroying the bearings. We thread the head and insert threaded plugs to make sure this issue never rears its ugly head.

Plus: Freeze plugs in the block blow out leaving you at best stranded on the side of the road, at worst, with a severely overheated engine in need of remanufacturing. Every new Choate Cummins engine comes standard with billet freeze plugs that are blow out proof using a tie bar bolting them into the side of the block.