{"product_id":"melling-oil-pump-for-gm-ls-series-internal-wet-sump-standard-volume-with-high-pressure-option-7-8-inlet","title":"Melling Oil Pump for GM LS-Series — Internal Wet-Sump, Standard Volume with High-Pressure Option (7\/8\" Inlet)","description":"\u003cb\u003eMelling's internal wet-sump oil pump for GM LS-series engines supplies a standard-volume, high-pressure flow through a 7\/8\" inlet for reliable lubrication performance.\u003c\/b\u003e\n\n\u003cp\u003eThis oil pump is designed for GM LS-series engines and offers a standard oil volume with elevated pressure characteristics to improve oil delivery where higher line pressure is desired. It installs as an internal, wet-sump unit and accepts the common 7\/8\" bolt-on pickup screen. The pump also includes an optional +25 psi high-pressure spring specifically provided for COPO Camaro applications, while delivering approximately a 10 psi increase in pressure compared with Melling part M295.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this pump fit into an LS-series engine?\u003c\/h3\u003e\n\u003cp\u003eThe pump is an internal wet-sump design built to replace factory units on most GM LS engines without major modifications. It mounts in the engine's oiling system using the standard bolt pattern and accepts the typical 7\/8\" diameter pickup screen, making installation straightforward for experienced technicians.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect bolt-in to many LS-series housings using factory bolt pattern\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard 7\/8\" bolt-on pickup screens\u003c\/li\u003e\n  \u003cli\u003eNo external remote mounting needed—internal wet-sump configuration\u003c\/li\u003e\n  \u003cli\u003eDesigned for OEM-style installations and restoration projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat pressure and volume changes should I expect?\u003c\/h3\u003e\n\u003cp\u003eThis Melling pump provides stock (standard) oil volume while increasing pressure relative to some previous Melling units. The design yields around a 10 psi boost in normal operation versus Melling M295, and an optional +25 psi spring is supplied for users who require higher controlled pressure for specific race or high-performance applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard oil volume—maintains factory flow rate\u003c\/li\u003e\n  \u003cli\u003eApproximately +10 psi over M295 in typical service\u003c\/li\u003e\n  \u003cli\u003eIncludes optional +25 psi high-pressure spring for COPO Camaro use\u003c\/li\u003e\n  \u003cli\u003eHigh-pressure operation designed for improved oiling under load\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this pump work with my pickup screen and oil pan?\u003c\/h3\u003e\n\u003cp\u003eThe pump accepts a 7\/8\" diameter bolt-on pickup screen, the common size used on many LS-series applications, so in most cases the stock pickup and pan will remain compatible. Always verify clearances and pickup positioning when swapping pumps to ensure proper oil supply and to avoid cavitation or starvation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUses standard 7\/8\" bolt-on pickup screen hardware\u003c\/li\u003e\n  \u003cli\u003eRetains wet-sump configuration—no remote lines required\u003c\/li\u003e\n  \u003cli\u003eCheck pickup-to-pan clearance when installing different pans or aftermarket screens\u003c\/li\u003e\n  \u003cli\u003eRecommended inspection of pan gaskets and fasteners during install\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I choose between the standard and high-pressure spring?\u003c\/h3\u003e\n\u003cp\u003eUse the standard spring for regular street, towing, or daily-driven performance where factory-like oil volume and modest pressure increases are appropriate. Fit the supplied +25 psi spring only when your application specifically requires higher oil pressure, such as certain competition setups or COPO Camaro specifications; higher pressure can affect bearing clearances and regulator settings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard spring: recommended for street and most performance builds\u003c\/li\u003e\n  \u003cli\u003e+25 psi spring: intended for applications specifying elevated pressure (COPO Camaro)\u003c\/li\u003e\n  \u003cli\u003eConsult engine builder or shop if unsure about bearing clearances or regulator settings\u003c\/li\u003e\n  \u003cli\u003eVerify oil pressure with a gauge after installation and break-in\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This Melling internal wet-sump oil pump is aimed at technicians, engine builders, and performance enthusiasts working on GM LS-series engines who want a straightforward replacement with a modest pressure increase over earlier Melling models. It's a practical choice for restorations, crate-engine installs, and many high-performance street engines where retaining standard oil volume while improving pressure is important. If you run a specified competition vehicle that calls for higher pressure (for example COPO setups), the included +25 psi spring gives installers a factory-supplied option without needing third-party modifications.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this Melling pump fit all GM LS-series engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits many LS-series applications using the standard internal wet-sump pattern, but confirm bolt pattern and pickup clearance for your specific engine and pan.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: When should I use the +25 psi spring included with the pump?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use the +25 psi spring only if your build or competition spec requires higher oil pressure, such as designated COPO Camaro setups.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Melling","offers":[{"title":"Default Title","offer_id":55171148022103,"sku":"B001T8H0JG","price":178.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/melling-oil-pump-front-view.jpg?v=1790439152","url":"https:\/\/britishgarage.co.uk\/products\/melling-oil-pump-for-gm-ls-series-internal-wet-sump-standard-volume-with-high-pressure-option-7-8-inlet","provider":"British Garage","version":"1.0","type":"link"}