Melling 10295 Oil Pump High Pressure for GM LS-Series - Reliable Boost

In this review the Melling 10295 oil pump is evaluated for owners of GM LS-series engines who need a durable replacement that raises operating pressure. The bottom line: it is a straightforward, well-built internal wet sump pump that delivers noticeably higher pressure over stock units and is a sensible upgrade for higher-mileage motors or builds that benefit from stronger idle pressure. Reviewers repeatedly note improved oil pressure and a perfect fit, making this a practical choice for those seeking a reliable OEM-style replacement with a high pressure option.

Key Features

• High Pressure: Supplies increased oil pressure over stock for better lubrication at idle and low RPMs, improving protection on worn engines.
• Standard Volume: Maintains stock oil volume so oil flow characteristics match factory expectations without overloading clearances.
• Optional +25 psi Spring: Includes an optional high pressure spring for COPO Camaro engines or other applications needing elevated relief pressure.
• Pressure Gain: Delivers about a 10 psi increase over the previous M295 pump, giving a consistent measurable improvement in system pressure.
• Standard Screen Fit: Uses the common 7/8' diameter bolt on screen to simplify installation with stock pickup hardware.
• Engine Compatibility: Designed specifically for GM LS-series engines so fit and alignment with internal drive components are correct.

Who It's For

This pump is aimed at owners of LS-series GM engines who want a durable replacement that raises oil pressure without changing pump volume, making it ideal for higher-mileage engines that suffer lower idle pressure or builds that need a stronger relief setting. Mechanics swapping a failed original pump or restoring an engine to reliable daily duty will find the fit and function reassuring.

It is less suited to custom dry sump systems or applications that require a different volume curve; users seeking radically different flow rates or nonstandard pickup fittings should consider alternate pump designs. Also, the installation can be involved, so do-it-yourselfers should have moderate engine experience or professional help available.

Pros & Cons

Pros

• Well-made construction that customers report performs better than stock units.
• Improved oil pressure at idle, with many owners seeing significantly higher readings.
• Includes optional +25 psi spring for higher pressure applications like COPO Camaro engines.
• Uses standard 7/8' bolt on screen so it fits common pickup setups without modification.

Cons

• Installation receives mixed feedback and can be challenging for inexperienced DIYers.
• Pressure relief behavior may not match every custom application without spring selection adjustments.

Specifications

Product	Melling 10295 Oil Pump
Type	Internal wet sump oil pump
Volume	Standard volume (stock volume)
Pressure	High pressure; approx. +10 psi over M295, optional +25 psi spring
Compatibility	GM LS-series engines
Screen Bolt Size	7/8' diameter standard bolt on screen
Packaging	Each (single unit)

Our Verdict

The Melling 10295 is a practical, cost-effective replacement for GM LS-series engines that need increased oil pressure without changing pump volume. Its solid construction, improved idle pressure and optional high pressure spring make it a smart choice for higher-mileage engines or builds requiring firmer relief settings, provided the installer is comfortable with a moderately involved replacement job.

Frequently Asked Questions

Does this pump raise oil pressure at idle?
Yes, customers report noticeably higher oil pressure at idle compared with stock pumps, and the unit is specified to deliver about a 10 psi increase over the previous M295 model.

Will it fit my LS engine pickup?
It uses the common 7/8' diameter bolt on screen so it fits standard LS-series pickup setups without needing a unique screen adapter.

Is the high pressure spring included?
An optional +25 psi high pressure spring is included for COPO Camaro engines and other applications that require higher relief pressure.