6.4L gasoline V8 (HEMI / 392)
6.4L HEMI V8 Engine Repair & Replacement
The 6.4L HEMI is the big gas V8 in Ram 2500/3500 trucks (from 2014) and SRT/Scat Pack cars and SUVs. It shares its HEMI design with the 5.7L, including lifter and camshaft wear concerns.
Common applications
- Ram 2500 and 3500 (gas, 2014+)
- Dodge Charger and Challenger SRT / Scat Pack
- Jeep Grand Cherokee SRT (select years)
Known problems and symptoms
Lifter tick and misfire
Roller lifter and camshaft lobe wear, similar to the 5.7L.
Misfires
Dual-plug ignition means coil and plug issues are common.
How we diagnose it
- Misfire analysis
- Valvetrain inspection
- Compression and leak-down
Repair and replacement options
- Lifter and camshaft replacement
- Ignition repairs
- Engine replacement
6.4L HEMI V8 repair topics
6.4L HEMI engine diagnostics
Testing-first diagnosis for 6.4L HEMI running, noise and warning-light problems.
6.4L HEMI lifter & camshaft repair
Lifter and cam wear on the 6.4L HEMI.
6.4L HEMI misfire diagnosis
Misfire diagnosis on the 6.4L HEMI.
6.4L HEMI engine repair, rebuild or replacement
How we decide between repairing, rebuilding or replacing a 6.4L HEMI with major internal damage.
Request a quote
Frequently asked questions
Is the 6.4L HEMI tick the same as the 5.7L?
The causes are similar — lifter and cam wear — but we diagnose each engine individually.