{"product_id":"blueprint-gm-ls-compatible-base-dressed-engine-427-c-i-605-hp","title":"BluePrint GM LS-Compatible Base Dressed Engine – 427 c.i. – 605 HP","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e605 HP · 565 lb-ft · 427 c.i. · 91+ Octane · Dyno Tested · 30-Month\/50,000-Mile Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBuilt for builders who want big-cubic-inch LS power without starting with a bare long block, this GM LS-compatible 427 cubic inch base dressed engine produces 605 horsepower and 565 lb-ft of torque. The 4.125-inch stroke delivers strong torque across the operating range, making this engine a solid choice for rock crawlers, rock bouncers, Ultra4 cars, trail rigs, muscle cars, hot rods, and custom trucks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe engine is built around a high-strength LSX-style cast iron block with increased deck thickness, reinforced webbing, an extended cylinder skirt, priority main oiling, and six-bolt main caps. A forged steel crankshaft, forged 6.125-inch connecting rods, and forged pistons provide the rotating assembly strength needed for high-output applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis base dressed package includes the intake manifold, throttle body, fuel injectors, fuel rail, water pump, ignition coils, sensors, spark plugs, wires, oil pan, and harmonic balancer. It \u003cstrong\u003edoes not include\u003c\/strong\u003e an ECU, wiring harness, engine controller, flexplate, flywheel, or front accessory drive. Builders can select the engine management and accessory system that best fits the vehicle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"1210\" data-start=\"970\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eNeed to confirm fitment or get an exact delivered price? \u003ca href=\"tel:615-962-9135\"\u003eCall\u003c\/a\u003e\u003ca href=\"(615)%20962-9135\"\u003e \u003c\/a\u003eor \u003ca href=\"sms:615-522-7164\"\u003etext\u003c\/a\u003e our team before ordering.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eGM LS-compatible 427 cubic inch assembled engine\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eHigh-strength cast iron LSX-style block\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eBluePrint LS3-style aluminum cylinder heads\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eHydraulic roller camshaft\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eGM-style plastic LS3 intake manifold\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e42 lb\/hr fuel injectors rated at 58 PSI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFuel rails\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eDrive-by-wire throttle body\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eWater pump\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eIgnition coil packs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eEngine sensors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eSpark plugs and ignition wires\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eLS swap oil pan\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eWindage tray\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eOil pickup screen\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eNon-weighted harmonic balancer\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb id=\"docs-internal-guid-392a3526-7fff-eff4-cde8-4b4d79a227c8\"\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eNote: \u003c\/strong\u003eThis engine does \u003cstrong\u003eNOT \u003c\/strong\u003einclude an \u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eECU, wiring harness, engine controller, flexplate, flywheel, starter, and front accessory drive..\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e \u003cspan class=\"svg-wrapper icon-plus\"\u003e \u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\n          \u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n          \u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable class=\"custom-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Platform\u003c\/td\u003e\n\u003ctd\u003eGM LS-Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplacement\u003c\/td\u003e\n\u003ctd\u003e427 Cubic Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower\u003c\/td\u003e\n\u003ctd\u003e605 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTorque\u003c\/td\u003e\n\u003ctd\u003e565 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Ratio\u003c\/td\u003e\n\u003ctd\u003e11.0:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlock Material\u003c\/td\u003e\n\u003ctd\u003eHigh-Strength Cast Iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlock Style\u003c\/td\u003e\n\u003ctd\u003eLSX-Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBore\u003c\/td\u003e\n\u003ctd\u003e4.0685\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStroke\u003c\/td\u003e\n\u003ctd\u003e4.125\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Caps\u003c\/td\u003e\n\u003ctd\u003e6-Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Main Seal\u003c\/td\u003e\n\u003ctd\u003eOne-Piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrankshaft\u003c\/td\u003e\n\u003ctd\u003eForged Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnecting Rods\u003c\/td\u003e\n\u003ctd\u003eForged 6.125\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePistons\u003c\/td\u003e\n\u003ctd\u003eForged, 22cc Dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Balance\u003c\/td\u003e\n\u003ctd\u003eInternally Balanced Front and Rear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCylinder Heads\u003c\/td\u003e\n\u003ctd\u003eBluePrint PS8015 Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCombustion Chamber\u003c\/td\u003e\n\u003ctd\u003e69cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntake Valve Size\u003c\/td\u003e\n\u003ctd\u003e2.165\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExhaust Valve Size\u003c\/td\u003e\n\u003ctd\u003e1.590\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntake Runner Volume\u003c\/td\u003e\n\u003ctd\u003e259cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExhaust Runner Volume\u003c\/td\u003e\n\u003ctd\u003e102cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamshaft Type\u003c\/td\u003e\n\u003ctd\u003eHydraulic Roller, Three-Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamshaft Lift\u003c\/td\u003e\n\u003ctd\u003e.624\" Intake \/ .624\" Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamshaft Duration @ .050\"\u003c\/td\u003e\n\u003ctd\u003e239° Intake \/ 255° Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLobe Separation Angle\u003c\/td\u003e\n\u003ctd\u003e114°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntake Manifold\u003c\/td\u003e\n\u003ctd\u003eOEM-Style LS3 Plastic Intake\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThrottle Body\u003c\/td\u003e\n\u003ctd\u003eDrive-by-Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Injectors\u003c\/td\u003e\n\u003ctd\u003e42 lb\/hr @ 58 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark Plug\u003c\/td\u003e\n\u003ctd\u003eCCH9405\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark Plug Gap\u003c\/td\u003e\n\u003ctd\u003e.045\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiring Order\u003c\/td\u003e\n\u003ctd\u003e1-8-7-2-6-5-4-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHarmonic Balancer\u003c\/td\u003e\n\u003ctd\u003eNon-Weighted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Recommendation\u003c\/td\u003e\n\u003ctd\u003e91+ Octane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOil Capacity\u003c\/td\u003e\n\u003ctd\u003e6 Quarts (with production oil pan and correct filter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Stall Converter\u003c\/td\u003e\n\u003ctd\u003e2200 RPM or Higher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Management\u003c\/td\u003e\n\u003ctd\u003eNot Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cstrong\u003eBlock Features\u003c\/strong\u003e \u003cspan class=\"svg-wrapper icon-plus\"\u003e \u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eHigh-strength LSX-style cast iron construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eIncreased deck thickness for improved cylinder sealing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eReinforced block webbing for greater structural support\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eSix-bolt main cap design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003ePriority main oiling system\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eImproved water jacket design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eExtended cylinder skirts for additional piston support\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eOne-piece rear main seal\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAccepts OEM-style LS3 front and rear covers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eInternally balanced rotating assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eImportant Installation Notes\u003c\/strong\u003e\u003cb id=\"docs-internal-guid-0515f661-7fff-e97c-38f2-2aa866f6eb89\"\u003e\u003c\/b\u003e \u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong data-start=\"7574\" data-end=\"7632\"\u003eBuilt by Off-Road People, Supported by Off-Road People\u003c\/strong\u003e\u003cbr data-start=\"7632\" data-end=\"7635\"\u003eWide Open Design has more than 20 years of experience building LS-powered rock crawlers, trail rigs, race cars, and custom tube-chassis vehicles. We can help you match the engine with the correct cooling system, fuel delivery, transmission, drivetrain, and installation components for your build.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eThis engine does not include an ECU, wiring harness, or engine controller.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eA compatible drive-by-wire engine management system is required.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eA non-weighted flexplate or flywheel is required.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRecommended flexplate or flywheel options include BPP12654640 and BPPLS1611.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eA 2200 RPM or higher stall converter is recommended for automatic transmission applications.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eCustom ECU programming and dyno tuning are required.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eBluePrint recommends air intake kit BPPLS01013 to help maintain proper MAF calculations and calibration.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eThe retrofit oil pan is designed to fit many 1955-1995 GM front-engine, rear-wheel-drive V8 applications, but chassis clearance must be verified.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eEngine mounts, transmission adapters, cooling system, exhaust, fuel delivery, starter, and accessory drive components must be selected for the vehicle.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eNot intended for pollution-controlled vehicles.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eNot designed for dry-sump oiling systems.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e \u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eApplication: GM LS engine swap and performance applications\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis is a universal performance engine intended for custom installation. Fitment depends on the engine mounts, oil pan clearance, transmission, transfer case, accessory drive, cooling system, exhaust, fuel system, wiring, and engine management selected for the build.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCommon applications include rock crawlers, rock bouncers, Ultra4 cars, trail buggies, muscle cars, hot rods, classic trucks, custom 4x4 vehicles, and performance street builds.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cstrong\u003eFrequently Asked Questions \u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\n          \u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n          \u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIs this a complete running engine?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eNo. This is a base dressed engine. It includes the intake manifold, throttle body, injectors, ignition components, water pump, oil pan, and harmonic balancer, but it does not include an ECU, wiring harness, engine controller, starter, flexplate, flywheel, or front accessory drive.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDoes this engine include an ECU and wiring harness?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eNo. The engine does not include an ECU, wiring harness, or engine controller. The builder must select a compatible drive-by-wire engine management package.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhat fuel does this engine require?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eThis engine requires 91-octane or higher gasoline.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIs the rotating assembly forged?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eYes. The engine uses a forged steel crankshaft, forged 6.125-inch connecting rods, and forged pistons.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhat transmission can be used with this engine?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eThis engine can be paired with many GM-compatible automatic and manual transmissions when the correct bellhousing, converter, flexplate, flywheel, and control system are used. Common choices include the TH400, 4L80E, Powerglide, and Tremec manual transmissions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhat stall converter is recommended?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eA stall converter rated at 2200 RPM or higher is recommended. Final converter selection should be based on vehicle weight, gearing, tire size, transmission, and intended use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIs this engine a good choice for an off-road build?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eYes. The 427 cubic inch displacement and 565 lb-ft of torque make it well suited for heavy off-road vehicles, large tires, deep gearing, and technical terrain. Proper cooling, oil control, fuel delivery, and drivetrain selection are still critical.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWill the included oil pan fit every LS swap?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eNo. The included retrofit oil pan fits many GM front-engine, rear-wheel-drive applications, but clearance must be checked against the chassis, front axle, suspension links, steering components, and crossmembers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDoes this engine require custom tuning?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eYes. The ECU must be programmed for the engine combination, injectors, throttle body, intake system, transmission, and vehicle configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCan this engine be used with a dry-sump system?\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eNo. This engine is not intended for dry-sump applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"BluePrint Engines","offers":[{"title":"Default Title","offer_id":56811265425574,"sku":"PSLS42730CTF","price":13799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/PSLS42730CTF-GM-LS-Engine-427-Base-Dressed-1_0f9b74c6-c772-44af-bb43-804c80cee3dc.jpg?v=1784121950","url":"https:\/\/wideopendesign.com\/products\/blueprint-gm-ls-compatible-base-dressed-engine-427-c-i-605-hp","provider":"Wide Open Design","version":"1.0","type":"link"}