Product Description:
Melling 10295 Oil Pump High Pressure Gen III IV 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LS3
The factory LS oil pump is known to suffer from cavitation above 6,200 RPM, leading to a significant reduction in oil flow—nearly 1 GPM lost by 7,000 RPM. This cavitation not only decreases flow but can also aerate the oil, causing dangerous drops in oil pressure and risking engine oil starvation. If you're pushing your LS or Vortec-powered engine past 6,200 RPM, upgrading your oil pump is critical for reliability and longevity.
The Melling 10295 High Pressure Oil Pump is engineered to solve these issues. Featuring a stiffer pressure relief spring, this pump increases maximum system oil pressure by 10% compared to the factory LS oil pump. The added pressure is especially beneficial for engines running external oil coolers or performance builds requiring consistent oiling at higher RPMs. For flexibility, Melling includes both the high-pressure spring and a factory-spec spring, allowing you to dial in your setup as needed.
Key Features & Benefits:
- Factory volumetric flow rate of approximately 6.8 GPM
- Includes stiffer bypass spring for a 10% oil pressure increase over stock
- Factory-spec pressure spring included for optional use
- Compatible with 4.8L and 6.0L Vortec iron block engines with Variable Valve Timing (VVT)
- Not compatible with engines equipped with Active Fuel Management (AFM)/Displacement On Demand (DOD)
- CNC-machined cast aluminum housing with hard anodizing for durability
- CNC-machined iron cover with phosphate coating
- Designed for use with factory GM oil pickup tubes and screens
Applications:
Fits a range of GM GEN III & IV LS and Vortec engines without AFM/DOD, including but not limited to:
Gen III LS Blocks: LS1, LS6
Gen IV LS Blocks: LS2, LS3
Gen III Vortec: 4800 (LR4, LM7), 5300 (LM7, L59, LM4, L33), 6000 (LQ4, LQ9)
Gen IV Vortec: 4800 (LY2, L20), 5300 (LH8, LH9), 6000 (L98, L96, LY6, L9H), 6200 (L92, L9H)
