BluePrint Engines Engine Complete Assembly - PSLS42781CTFK ⚠ Check if this part fits your vehicle Select your vehicle to confirm fitment before you buy. Select vehicle 427CI GM LS Compatible Deluxe Dressed -EFI -Polished Kit Manufacturer: BluePrint Engines Manufacturer part number: PSLS42781CTFK $16,599.00 Ship to Select country United States of America Afghanistan Åland Islands Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia (Plurinational State of) Bonaire, Sint Eustatius and Saba Bosnia and Herzegovina Botswana Bouvet Island Brazil British Indian Ocean Territory Brunei Darussalam Bulgaria Burkina Faso Burundi Cabo Verde Cambodia Cameroon Canada Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo (Democratic Republic of the) Cook Islands Costa Rica Côte d'Ivoire Croatia Cuba Curaçao Cyprus Czechia Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Eswatini Ethiopia Falkland Islands (Malvinas) Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guam Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Heard Island and McDonald Islands Holy See Honduras Hong Kong Hungary Iceland India Indonesia Iran (Islamic Republic of) Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Korea (Democratic People's Republic of) Korea (Republic of) Kuwait Kyrgyzstan Lao People's Democratic Republic Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macao Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Micronesia (Federated States of) Moldova (Republic of) Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island North Macedonia Northern Mariana Islands Norway Oman Pakistan Palau Palestine, State of Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Poland Portugal Puerto Rico Qatar Réunion Romania Russian Federation Rwanda Saint Barthélemy Saint Helena, Ascension and Tristan da Cunha Saint Kitts and Nevis Saint Lucia Saint Martin (French part) Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino Sao Tome and Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten (Dutch part) Slovakia Slovenia Solomon Islands Somalia South Africa South Georgia and the South Sandwich Islands South Sudan Spain Sri Lanka Sudan Suriname Svalbard and Jan Mayen Sweden Switzerland Syrian Arab Republic Taiwan, Province of China Tajikistan Tanzania, United Republic of Thailand Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom of Great Britain and Northern Ireland United States Minor Outlying Islands Uruguay Uzbekistan Vanuatu Venezuela (Bolivarian Republic of) Vietnam Virgin Islands (British) Virgin Islands (U.S.) Wallis and Futuna Western Sahara Yemen Zambia Zimbabwe * Other * Shipping Method Name Estimated Delivery Price No shipping options Apply Custom wishlist OK Add to wishlist Add to compare list Email a friend BluePrint Engines 427 c.i. GM LS Compatible - Deluxe Dressed - Fuel Injected - Polished Pulley Kit. Includes 30-Month / 50,000 Mile Warranty & Dyno TestedNote: 427CI GM LS Compatible Deluxe Dressed -EFI -Polished KitWatch product video Products specifications Attribute name Attribute value Recommended Spark Plug Gap .045 in. Rear Main Seal Style 1 Piece Firing Order 1,8,7,2,6,5,4,3 Compression Ratio 11.0:1 Recommended Stall Converter 2200+ RPM Torque 520 Horsepower 585 Recommended Octane Fuel 91+ Octane Crankshaft Vendor BluePrint Engines Cylinder Head Vendor BluePrint Engines Distributor Vendor BluePrint Engines Fuel Delivery Vendor BluePrint Engines Intake Manifold Vendor BluePrint Engines Intake Manifold Type BluePrint Engines Cast Aluminum Intake Block Description BluePrint Engines High Strength Cast Iron (LSX Style) Block - 6 Bolt Main - 4.0665" Bore Recommended Spark Plug CCH9405 Distributor Included Coil Packs Spark Plug Wires Included Coil Packs Quantity EA Timing Requirements ECM Supplied with Calibration Pistons Forged Rotating Assembly Forged Crank - 4.125 in. Stroke and Forged 6.125 in. Rods Fuel Delivery Type Fuel Injected Cam Hydraulic Roller - .624 Intake / .624 Exhaust Lift - 239 Intake / 255 Exhaust Duration [email protected] LSA Engine Balance Internally Balanced Cylinder Heads LS3 Aluminum Cylinder Heads Air Cleaner Included No Flexplate/Flywheel Included No Recommended Flexplate/Flywheel Non Weighted BPP12654640 - BPPLS1611 Recommended Harmonic Balancer Non-Weighted Carb/Fuel Injection Included Yes Cylinder Heads Included Yes Harmonic Balancer Included Yes Intake Manifold Included Yes Spark Plugs Included Yes Timing Cover Included Yes Valve Covers Included Yes Water Pump Included Yes Pulley Kit Included Yes - Polished - LT1 Style 140amp Alternator, LT1 Style Water Pump, Type II Power Steering Pump with Remote Reservoir, Peanut Style Air Conditioning Compressor. Oil Pan Included Yes-Rear Sump Prop 65 Y/N Flag Yes Prop 65 - Short Label WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov Country of Origin US Condition New 🚗 Compatible with 340 vehicles are compatible with this product · 1963–2026 Looking for fitment details? Add your vehicle and we'll show you instantly whether this part fits. + Add Vehicle