{"id":8688,"date":"2026-06-24T17:48:51","date_gmt":"2026-06-24T17:48:51","guid":{"rendered":"https:\/\/elevemotors.com\/product\/blueprint-builder-series-ls427-625hp-standard-edition-efi-crate-engine-and-4l65-70e-trans-combos-bls427k4l7\/"},"modified":"2026-06-24T17:48:52","modified_gmt":"2026-06-24T17:48:52","slug":"blueprint-builder-series-ls427-625hp-standard-edition-efi-crate-engine-and-4l65-70e-trans-combos-bls427k4l7","status":"publish","type":"product","link":"https:\/\/elevemotors.com\/fr\/product\/blueprint-builder-series-ls427-625hp-standard-edition-efi-crate-engine-and-4l65-70e-trans-combos-bls427k4l7\/","title":{"rendered":"BluePrint Builder Series LS427\/625HP Standard Edition EFI Crate Engine and 4L65\/70E Trans Combos BLS427K4L7"},"content":{"rendered":"<div class=\"row column part-detail-section\">\n<p class=\"part-detail-section-header h2\"><strong>Overview<\/strong><\/p>\n<div class=\"attribute-container flex-container flex-wrap\">\n<div class=\"small-12 medium-9 large-6\"><strong>Brand: <\/strong>BluePrint Engines<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Manufacturer\u2019s Part Number: <\/strong>BLS427K4L7<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Part Type: <\/strong>Engine and Transmission Combos<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Product Line: <\/strong>BluePrint Builder Series LS427\/625HP Standard Edition EFI Crate Engine and 4L65\/70E Trans Combos<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Summit Racing Part Number: <\/strong>MLL-BLS427K4L7<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>UPC: <\/strong>887753972521<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Crate Engine Family: <\/strong>Chevy LS<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Engine Assembly Style: <\/strong>Long block<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Assembled: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Intake Manifold Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Carburetor Included: <\/strong>No<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Throttle Body Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Cylinder Heads Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Cylinder Head Material: <\/strong>Cast aluminum<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Distributor Included: <\/strong>No<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Oil Pan Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Valve Covers Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Timing Cover Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Water Pump Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Harmonic Balancer Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Spark Plugs Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Spark Plug Wires Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Flexplate Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Flywheel Included: <\/strong>No<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Transmission Controller Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Torque Converter Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Wiring Harness Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Computer Included: <\/strong>Yes<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Quantity: <\/strong>Sold as a kit.<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Notes: <\/strong>Includes complete ECU, harness, starter, drive-by-wire pedal and throttle body. Polished front accessory drive system includes water pump, alternator, power steering pump, A\/C compressor and all belts and pulleys.<\/div>\n<\/div>\n<p class=\"part-detail-description-title\"><strong>BluePrint Builder Series LS427\/625HP Standard Edition EFI Crate Engine and 4L65\/70E Trans Combos<\/strong><\/p>\n<p class=\"part-detail-description\">BluePrint Builder Series LS427\/625HP Standard Edition EFI crate engine and 4L65\/70E transmission combos take the guesswork out of matching up an engine and transmission for your ride. Featuring a fuel injected Chevy LS small block-compatible 427 (c.i.d.) engine that produces 625 horsepower, this standard edition builder series includes a polished pulley kit and 4L65\/70E automatic transmission. The aluminum BluePrint Engines cylinder heads help produce a nice 11.0:1 compression ratio, with assistance from the hydraulic roller camshaft, forged pistons, and forged crankshaft. Altogether, this assembly produces 565 lbs.-ft. of torque. When you need or want a new LS powertrain for your ride, go with the authority in crate engines and their BluePrint Builder Series LS427\/625HP Standard Edition EFI crate engine and 4L65\/70E transmission combos.<\/p>\n<p>Other product features, items, and specifications include:<\/p>\n<p>Block:<br \/>\n* OEM style (4.060 in. bored to 4.069 in.)<br \/>\n* Main caps are 6-bolt<br \/>\n* One-piece rear main seal<\/p>\n<p>Rotating Assembly:<br \/>\n* New forged crankshaft<br \/>\n* Stroke \u2013 4.125 in.<br \/>\n* Forged connecting rods (6.125 in.)<br \/>\n* Forged pistons<br \/>\n* Internally balanced<br \/>\n* Non-weighted harmonic balancer<\/p>\n<p>Cylinder Heads:<br \/>\n* BluePrint PS8015 models<br \/>\n* Chamber \u2013 72cc<br \/>\n* Valves are 2.165 in. intake and 1.600 in. exhaust<br \/>\n* Exhaust runners are 259cc intake and 102cc exhaust<\/p>\n<p>Camshaft:<br \/>\n* Hydraulic roller<br \/>\n* Intake valve lift \u2013 0.624 in.<br \/>\n* Exhaust valve lift \u2013 0.624 in.<br \/>\n* Intake duration at 0.050 in. of lift \u2013 239<br \/>\n* Exhaust duration at 0.050 in. of lift \u2013 255<br \/>\n* Lobe separation angle (LSA) \u2013 114 degrees<\/p>\n<p>Ignition Timing<br \/>\n* ECM supplied with calibration (initial and total timing are controlled by PCM)<br \/>\n* Firing order is 1-8-7-2-6-5-4-3<\/p>\n<p>Assembled 4-speed Transmission Package:<br \/>\n* Complete 4L65\/70E package with electronic transmission controller<br \/>\n* Torque converter with 2,200\u20132,400 rpm stall<br \/>\n* Non-weighted flexplate<br \/>\n* Starter<\/p>\n<p>Other Components:<br \/>\n* All required (to make engine run) sensors and wiring harness (LS controller package only controls engine)<br \/>\n* Unlocked ECU for local Dyno shop tuning refinement<br \/>\n* LT4 87mm DBW (Drive-By-Wire) throttle body<br \/>\n* Valve covers, retro-fit oil pan (fits most 1955-95 GM front engine, RWD, V8 cars), and timing cover<br \/>\n* LS3 car intake manifold<br \/>\n* Fuel injectors (42 lbs.) and return-less fuel rail<br \/>\n* Coil packs<br \/>\n* Spark plug wires<br \/>\n* Gas\/throttle pedal<br \/>\n* Complete front accessory drive includes A\/C, power steering, alternator, belts, and pulleys<br \/>\n* ACDelco 41-985 spark plugs (0.040 in. gap)<\/p>\n<p>Note: BluePrint highly recommends their BPPLS01013 air intake kit to ensure proper MAF calculations (same used on Dyno). Recommended fuel is 91-93 octane. Recommended oil is BPP710. Not designed for use with dry sump or pollution-controlled vehicles.<\/p>\n<\/div>\n<div class=\"row column part-detail-section\"><em id=\"applications\" class=\"anchor-tag\"><\/em><\/p>\n<p class=\"part-detail-section-header h2\"><strong>Applications<\/strong><\/p>\n<div id=\"FitmentMessagePlaceholder\" class=\"fitment-result-container multi-applications-fitment\">\n<div><\/div>\n<\/div>\n<div id=\"ApplicationSection\" data-sku=\"MLL-BLS427K4L7\">\n<div class=\"attribute-container application-item flex-container flex-wrap\">\n<div class=\"small-12 medium-9 large-6\"><strong>Make: <\/strong>CHEVROLET<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Beginning Year: <\/strong>2006<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Ending Year: <\/strong>2015<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Engine Type: <\/strong>V8<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Engine Size: <\/strong>7.0L\/427<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Engine Family: <\/strong>Chevy small block Gen III\/IV (LS-based engines)<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Fuel Delivery Type: <\/strong>Fuel injection<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Transmission: <\/strong>Automatic<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Transmission Manufacturer Code: <\/strong>4L65-E<\/div>\n<div><\/div>\n<\/div>\n<div class=\"attribute-container application-item flex-container flex-wrap\">\n<div class=\"small-12 medium-9 large-6\"><strong>Make: <\/strong>CHEVROLET<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Beginning Year: <\/strong>2006<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Ending Year: <\/strong>2015<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Engine Type: <\/strong>V8<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Engine Size: <\/strong>7.0L\/427<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Engine Family: <\/strong>Chevy small block Gen III\/IV (LS-based engines)<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Fuel Delivery Type: <\/strong>Fuel injection<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Transmission: <\/strong>Automatic<\/div>\n<div class=\"small-12 medium-9 large-6\"><strong>Transmission Manufacturer Code: <\/strong>4L70-E<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Engine and Transmission Combo, Builder Series, LS427\/625HP, Standard Edition, EFI, 4L65\/70E , Aluminum Heads, 7.0L\/427, Chevy LS, Kit<\/p>","protected":false},"featured_media":8689,"comment_status":"closed","ping_status":"open","template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[495],"product_tag":[],"class_list":["post-8688","product","type-product","status-publish","has-post-thumbnail","product_cat-engine-and-transmission-combos-engines-for-sale","first","instock","purchasable","product-type-simple"],"exclude_global_add_ons":[],"addons":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>BluePrint Builder Series LS427\/625HP Standard Edition EFI Crate Engine and 4L65\/70E Trans Combos BLS427K4L7<\/title>\n<meta name=\"description\" content=\"Engine and Transmission Combo, Builder Series, LS427\/625HP, Standard Edition, EFI, 4L65\/70E , Aluminum Heads, 7.0L\/427, Chevy LS, Kit\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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