High Performance High Reliable OEM 392 Camshaft Hydraulic Roller Cam for HEMI Engine
Request a Quote
Enter the quantity you need and add to your quote list for pricing inquiries.
Product Details
An OEM 392 camshaft is a factory-specification camshaft designed for 6.4L HEMI engines (392 cubic inches), commonly found in Dodge Challenger, Charger, Ram, and Jeep SRT vehicles. It controls valve timing for optimal engine performance, fuel efficiency, and emissions compliance. Manufactured from hardened steel billet or cast iron with precision-ground lobes. Available in OEM replacement, stage 2 upgrade, or custom grind configurations. Features include hydraulic roller or flat tappet lifters, 280-300 duration, 0.525-0.550 inch lift, and 112-115 LSA. Suitable for 5.7L to 6.4L swap applications, performance upgrades, or direct engine rebuilds. Custom camshafts available with specific grind profiles and timing requirements.
What Is an OEM 392 Camshaft?
An OEM 392 camshaft is a factory-original or factory-specification camshaft engineered specifically for the 6.4L HEMI V8 engine (392 cubic inches displacement). It controls the opening and closing of the engine’s valves, determining power characteristics, torque curve, idle quality, and emissions output. Unlike aftermarket performance camshafts that may sacrifice drivability for peak power, the OEM 392 camshaft balances performance, fuel economy, and smooth operation.
This product is characterized by its precision-ground lobes, hardened construction, and specific grind profile. Typical features include hydraulic roller lifters for reduced friction, a duration of 280-300 degrees, lift of 0.525-0.550 inches, lobe separation angle (LSA) of 112-115 degrees, and a single or three-bolt cam gear mounting pattern. The OEM 392 camshaft is engineered for direct fit in 6.4L HEMI applications.
Manufacturing Process:
The production of an OEM 392 camshaft follows a precise sequence. Raw material—hardened steel billet or cast iron—is selected based on strength requirements. The blank is rough machined to approximate lobe profile. CNC cam grinding machines precision-grind each lobe to exact specifications. Heat treatment hardens the lobe surfaces to resist wear. Journals are precision ground for bearing fit. The cam is straightened and stress-relieved. Each OEM 392 camshaft undergoes dimensional inspection, lobe profile verification, and hardness testing.
Key Specifications:
| Parameter | OEM 392 Camshaft Range |
| Duration (advertised) | 280 to 300 degrees |
| Lift (intake/exhaust) | 0.525 to 0.550 inches |
| Lobe Separation Angle (LSA) | 112 to 115 degrees |
| RPM Power Band | 2,100 to 6,400 RPM |
| Lifter Type | Hydraulic roller |
| Material | Hardened steel billet or cast iron |
| Cam Gear Mount | 1-bolt or 3-bolt |
Types of OEM 392 Camshaft:
OEM Replacement Camshaft:
A direct factory-match OEM 392 camshaft for stock engines. Identical to original equipment specifications. Suitable for engine rebuilds and stock replacement.
Stage 2 OEM Style Camshaft:
An upgraded OEM 392 camshaft with more aggressive duration and lift than factory. Provides 15-25 HP gain while maintaining drivability. Suitable for performance street use.
5.7L to 6.4L Swap Camshaft:
An OEM 392 camshaft designed for installing a 6.4L cam in a 5.7L HEMI engine. Requires matching valve springs and tuning. Suitable for budget performance upgrades.
Custom Grind OEM 392 Camshaft:
An OEM 392 camshaft with custom grind profile for specific modifications such as forced induction, nitrous, or racing applications.
Materials:
Hardened Steel Billet is the premium material for it’s production. Offers superior strength, wear resistance, and dimensional stability. Suitable for high-performance and racing applications.
Cast Iron provides good wear resistance at lower cost. Used in factory original equipment. Suitable for stock replacement and mild performance upgrades.
Applications Across Industries:
Dodge Challenger:
The OEM 392 camshaft is used in Challenger R/T Scat Pack and SRT 392 models. Provides balanced power from 2,100 to 6,400 RPM.
Dodge Charger:
The OEM 392 camshaft powers Charger Scat Pack and SRT 392 sedans. Delivers strong mid-range torque for street and highway driving.
Ram 1500:
The OEM 392 camshaft is used in Ram Rebel and Sport models with 6.4L HEMI. Tuned for truck torque and towing capability.
Jeep Grand Cherokee SRT:
The OEM 392 camshaft propels the Jeep SRT and Trackhawk SUVs. Calibrated for responsive throttle and high-RPM power.
Engine Swap Projects:
The OEM 392 camshaft is popular for swapping 6.4L engines into older vehicles, offering modern power and reliability.
Excellent Case: 5.7L HEMI Cam Upgrade:
Background: A Ram 1500 owner with a 5.7L HEMI wanted more power without sacrificing drivability. Aftermarket cams were too aggressive for daily driving.
Solution: An OEM 392 camshaft was installed with matching valve springs and a professional tune. The cam provided moderate duration increase over stock 5.7L cam.
Results:
- Power Gain: 25 rear wheel horsepower
- Torque Gain: 20 lb-ft across mid-range
- Idle Quality: Slight lope, still smooth for daily driving
- Installation: 8-hour job with cam and spring swap
- Reliability: No check engine lights, passed emissions
This case demonstrates how this product provides a practical power upgrade for 5.7L HEMI owners.
How to Select the Right OEM 392 Camshaft:
Choosing the appropriate OEM 392 camshaft requires consideration of engine displacement, with 6.4L for stock replacement and 5.7L for swap applications. Performance goals determine whether OEM replacement or stage 2 upgrade is needed. Driving habits influence cam selection, with street driving favoring OEM specs and racing favoring custom grinds. Budget balances cast iron vs billet steel construction.
Installation Best Practices:
Proper installation ensures the this product performs reliably. Replace lifters when installing a new cam. Use assembly lube on lobes and journals. Verify cam timing marks are aligned. Tighten cam bolts to factory torque specifications. Prime oil system before first start. Break in cam per manufacturer procedure.
Maintenance and Care:
Regular maintenance extends OEM 392 camshaft life. Use high-quality engine oil with ZDDP for flat tappet cams. Change oil at recommended intervals. Listen for valvetrain noise indicating wear. Inspect cam lobes during engine disassembly.
Common Failure Modes:
Understanding potential failures helps with preventive maintenance. Lobe wear from inadequate lubrication or poor oil quality, prevented by using proper oil and assembly lube. Cam bearing failure from low oil pressure, prevented by maintaining oil level. Broken cam from valve train interference, prevented by checking piston-to-valve clearance.
Conclusion:
The OEM 392 camshaft represents a proven, reliable component for 6.4L HEMI engines, offering balanced performance for daily driving and towing. By understanding the specifications, types, and selection criteria outlined in this guide, the right OEM 392 camshaft can be selected for any application—from stock replacement to performance upgrades.
