{"product_id":"melling-oil-pump-for-gm-ls-series-internal-wet-sump-standard-volume-high-pressure-with-7-8-inlet","title":"Melling Oil Pump for GM LS-Series — Internal Wet-Sump, Standard Volume, High-Pressure with 7\/8\" Inlet","description":"\u003cp\u003e\u003cstrong\u003eMelling's internal wet-sump oil pump for GM LS-series engines delivers higher operating pressure at stock volume, with a 7\/8\" bolt-on screen inlet and an optional +25 psi spring for high-performance COPO Camaro applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis pump is designed as a direct-fit internal wet-sump replacement for GM LS-family engines where you want stock oil capacity but improved pressure control. It combines the standard pump volume your engine expects with a higher pressure profile than Melling's M295 unit—approximately a 10 PSI increase—while accepting the factory-style 7\/8\" bolt-on inlet screen. For racers or street engines that need added pressure under load, an optional +25 psi spring is included for COPO Camaro setups and can be selected when higher spring rates are required.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this pump affect engine oil pressure and delivery?\u003c\/h3\u003e\n\u003cp\u003eThe pump raises system pressure compared with the baseline M295 model without changing the standard oil volume. That means more consistent oil pressure at critical points in the oiling circuit, especially under high RPM or heavy load. It’s built to maintain proper flow while increasing pressure, so lubrication remains stable across operating conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard volume: preserves factory oil capacity and pickup geometry\u003c\/li\u003e\n  \u003cli\u003eHigher pressure: around +10 PSI higher than M295 at similar conditions\u003c\/li\u003e\n  \u003cli\u003eOptional +25 psi spring: for COPO Camaro and higher-pressure demands\u003c\/li\u003e\n  \u003cli\u003eMaintains required flow characteristics for LS-series engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my GM LS-series engine and intake pickup?\u003c\/h3\u003e\n\u003cp\u003eYes — this Melling pump is an internal, wet-sump design made for GM LS-series blocks that use a 7\/8\" diameter bolt-on inlet screen. It installs in place of the factory pump with the same external mounting pattern and pickup compatibility, simplifying replacement or upgrade jobs without modifying the oil pan or pickup tube.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit internal wet-sump design for LS-series blocks\u003c\/li\u003e\n  \u003cli\u003eUses standard 7\/8\" bolt-on inlet screen for easy swap\u003c\/li\u003e\n  \u003cli\u003eNo oil pan or pickup tube alterations required in most applications\u003c\/li\u003e\n  \u003cli\u003eSold each — one pump per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance or service situations justify upgrading to this pump?\u003c\/h3\u003e\n\u003cp\u003eConsider this pump when you need higher oil pressure for stability during sustained high RPMs, towing, or spirited driving while keeping stock oil volume. It’s also a recommended choice for engines that have experienced low-pressure symptoms on the factory pump, or for builders specifying a spring change for COPO Camaro competition setups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproved pressure for high-RPM or high-load operation\u003c\/li\u003e\n  \u003cli\u003eUseful for engines with marginal factory oil pressure\u003c\/li\u003e\n  \u003cli\u003eOptional higher-rate spring for competition\/COPO applications\u003c\/li\u003e\n  \u003cli\u003eMaintains OEM oil volume—no hidden capacity trade-offs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This Melling internal oil pump is aimed at GM LS-series owners and engine builders who want a reliable direct-replacement pump that raises system pressure without changing oil capacity. It's well suited to street performance builds, light-duty race engines, and any LS application where consistent, higher pressure is desired—particularly when you want to retain the factory-style 7\/8\" inlet screen and pickup layout. Choose the optional +25 psi spring when preparing COPO Camaro engines or other high-pressure setups that require an elevated base pressure.\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 pump use the factory 7\/8\" bolt-on inlet screen?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It accepts the standard 7\/8\" diameter bolt-on inlet screen for direct replacement or upgrade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the +25 psi spring required for normal street use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The +25 psi spring is optional and intended for high-pressure COPO or competition setups.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Melling","offers":[{"title":"Default Title","offer_id":67584858030265,"sku":"B001T8H0JG","price":311.26,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/melling-oil-pump-front-view.jpg?v=1790456634","url":"https:\/\/redleafauto.ca\/products\/melling-oil-pump-for-gm-ls-series-internal-wet-sump-standard-volume-high-pressure-with-7-8-inlet","provider":"Redleaf Auto","version":"1.0","type":"link"}