Johnson Lifters 2356 - Drop-in Gen III Hemi Lifters with Axle Oiling

Description

Maximize valvetrain durability and protect critical needle roller bearings under extreme spring pressures with the Johnson Lifters Gen III Hemi Drop-In Hydraulic Roller Lifters with High-Pressure Axle Oiling (Part # 2356 / JLC2356). Engineered and precision-manufactured 100% in the USA from premium aerospace-grade alloy steel, these drop-in non-MDS lifters deliver bulletproof reliability for aggressive street, road-course, and high-boost modern Mopar combinations.

Featuring Johnson's proprietary continuous high-pressure axle oiling, the 2356 directly feeds pressurized engine oil to the internal roller needle bearings, drastically reducing friction, dissipating extreme heat, and preventing premature roller pin galling. Designed with standard hydraulic travel and a high-flow disc check valve, these lifters provide forgiving street setup parameters while dropping directly into factory OEM non-MDS guide trays—making them the benchmark upgrade for 5.7L MDS deletes, 6.4L Apache builds, and high-horsepower 6.2L Hellcat applications.

Core Technical Specifications

Engine Compatibility & Application Fitment

• Supported Engines: All 2003+ Chrysler, Dodge, RAM, and Jeep Gen III Hemi platforms:
  • 5.7L Hemi: 2003–2008 Non-VVT and 2009+ Eagle VVT (requires non-MDS conversion trays)
  • 6.1L SRT Hemi: 2005–2010 Non-VVT
  • 6.2L Hellcat / Demon / Redeye: Factory supercharged platforms running elevated boost and seat pressures
  • 6.4L 392 Apache Hemi: 2011+ VVT muscle cars, SUVs, and heavy-duty trucks
  • Stroker & Crate Engines: 392, 411, 426, and 440+ CID aftermarket Gen III builds
• MDS Delete Applications: Ideal drop-in replacement when deleting the failure-prone factory Multi-Displacement System (MDS) on 5.7L and 6.4L engines during performance camshaft swaps.
• Forced Induction & Road Course: Axle oiling provides vital continuous lubrication under sustained high-load, high-oil-temperature, and extended RPM track environments.

Installation Guidelines & Preload Protocol

• Target Lifter Preload: Recommended cold lifter preload is .035 in. to .045 in. from zero lash. The standard travel profile allows a wider, more forgiving operating window compared to short-travel variants while preserving hydraulic self-adjustment.
• Mandatory Pushrod Length Verification: Always verify pushrod length using an adjustable pushrod length checker on both intake and exhaust valves during assembly. Base circle differences on aftermarket camshafts, block decking, and head milling directly impact required pushrod length.
• Lifter Tray Inspection: Must be installed using genuine OEM Mopar non-MDS lifter trays (Part # 05038785AA / 05038786AA or equivalent). Never reuse worn, loose, or heat-degraded plastic guide trays.
• Pre-Assembly Lubrication: Generously lubricate the lifter bodies, roller axles, and wheels with high-tack engine assembly lube. Do not pre-pump lifters with oil before checking zero lash and preload.