NEW Mopar Crate HEMI Engine Kits

Mopar’s Crate HEMI Engine Kits let owners drop modern HEMI power into 1975-and-earlier muscle like the Charger, Challenger, and ‘Cuda. The 345 kit takes the 5.7-liter to 383 horsepower, while the 392 kit holds the 6.4-liter at 485, both optimized for manual transmissions and priced at $1,795. YOUCAR breaks down what’s included and the fine print that matters. Watch to see whether one of these belongs in your project.

Imagine dropping a modern, factory-engineered HEMI into a 1970 Charger without a garage full of custom fabrication and a shelf of wiring headaches. That is precisely the door Mopar cracked open with its Crate HEMI Engine Kits, and the details are more interesting than a simple engine swap. There are two versions, two very different power figures, and one deliberate design choice that tells you exactly who these kits were built for. YOUCAR walks through what the packages include, and the fine print is where the real story lives for anyone eyeing a muscle-era Mopar.

Modern HEMI Power for Pre-1975 Muscle

The premise is straightforward and genuinely exciting: the Mopar 345 Crate HEMI Kit for the 5.7-liter engine and the 392 Crate HEMI Kit for the 6.4-liter are designed to pair with 1975-and-earlier vehicles. That opens modern HEMI power up to icons like the Dodge Charger, Challenger, and Plymouth ‘Cuda, along with plenty of other makes and models. The unlocked PCM ships with a factory calibration, so you are getting engineered integration rather than a guess-and-check tune.

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The Numbers: 345 vs 392

The two kits are not just different displacements, they are different missions. The 345 kit bumps the 5.7-liter HEMI to 383 horsepower and 425 lb-ft of torque. Step up to the 392 kit and the 6.4-liter holds steady at 485 horses and 472 lb-ft. Both are optimized for manual transmissions, a telling choice, though Mopar notes that automatics like the Torqueflite 727 and 904 can be adapted, if not ideally. That manual-first design signals these kits are aimed at hands-on builders chasing an engaging driving experience.

What It Costs and What You Get

Pricing is refreshingly clear: both kits carry the same $1,795 MSRP. You can run one with a previously purchased 2014-or-newer 5.7- or 6.4-liter HEMI service engine, or buy a fresh HEMI and the kit together. Mopar even backs the kits with a two-year, unlimited-mileage warranty, unusual reassurance in the crate-engine world. Mopar first showcased the concept at the 2016 SEMA Show with the Dodge Shakedown Challenger and Jeep CJ66. Watch the full video and share your thoughts below.

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