{"product_id":"chevrolet-performance-ls427-7-0l-570-hp-long-block-crate-engine-19421004","title":"Chevrolet Performance LS427 7.0L 570 HP Long Block Crate Engine – 19421004","description":"\u003cp data-start=\"279\" data-end=\"348\"\u003e\u003cstrong data-start=\"279\" data-end=\"348\"\u003eUnleash Race-Bred Power with the LS427 from Chevrolet Performance\u003c\/strong\u003e\u003c\/p\u003e \u003cp data-start=\"350\" data-end=\"699\"\u003eDerived from the legendary LS7 and developed with Corvette Z06 heritage, the \u003cstrong data-start=\"427\" data-end=\"486\"\u003eChevrolet Performance LS427 Crate Engine (P\/N 19421004)\u003c\/strong\u003e delivers an impressive \u003cstrong data-start=\"510\" data-end=\"552\"\u003e570 horsepower and 540 lb-ft of torque\u003c\/strong\u003e. This naturally aspirated 7.0L beast is built for serious performance, whether you’re building a race car, street machine, or Pro-Touring monster.\u003c\/p\u003e \u003cp data-start=\"701\" data-end=\"908\"\u003eBuilt with all-forged internals and high-flow CNC-ported cylinder heads, the LS427 is engineered to handle aggressive driving and track abuse—while maintaining the reliability that LS engines are famous for.\u003c\/p\u003e \u003chr data-start=\"910\" data-end=\"913\"\u003e \u003ch3 data-start=\"915\" data-end=\"946\"\u003e\u003cstrong data-start=\"919\" data-end=\"946\"\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"947\" data-end=\"1493\"\u003e \u003cli data-start=\"947\" data-end=\"983\"\u003e \u003cp data-start=\"949\" data-end=\"983\"\u003e\u003cstrong data-start=\"949\" data-end=\"966\"\u003eDisplacement:\u003c\/strong\u003e 7.0L \/ 427 CID\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"984\" data-end=\"1022\"\u003e \u003cp data-start=\"986\" data-end=\"1022\"\u003e\u003cstrong data-start=\"986\" data-end=\"1001\"\u003eHorsepower:\u003c\/strong\u003e 570 HP @ 6,200 RPM\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1023\" data-end=\"1060\"\u003e \u003cp data-start=\"1025\" data-end=\"1060\"\u003e\u003cstrong data-start=\"1025\" data-end=\"1036\"\u003eTorque:\u003c\/strong\u003e 540 lb-ft @ 4,800 RPM\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1061\" data-end=\"1094\"\u003e \u003cp data-start=\"1063\" data-end=\"1094\"\u003e\u003cstrong data-start=\"1063\" data-end=\"1085\"\u003eCompression Ratio:\u003c\/strong\u003e 11.0:1\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1095\" data-end=\"1163\"\u003e \u003cp data-start=\"1097\" data-end=\"1163\"\u003e\u003cstrong data-start=\"1097\" data-end=\"1107\"\u003eBlock:\u003c\/strong\u003e LS7 cast aluminum with 6-bolt, cross-bolted main caps\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1164\" data-end=\"1211\"\u003e \u003cp data-start=\"1166\" data-end=\"1211\"\u003e\u003cstrong data-start=\"1166\" data-end=\"1181\"\u003eCrankshaft:\u003c\/strong\u003e Forged steel, 4.000″ stroke\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1212\" data-end=\"1247\"\u003e \u003cp data-start=\"1214\" data-end=\"1247\"\u003e\u003cstrong data-start=\"1214\" data-end=\"1223\"\u003eRods:\u003c\/strong\u003e Forged powdered metal\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1248\" data-end=\"1280\"\u003e \u003cp data-start=\"1250\" data-end=\"1280\"\u003e\u003cstrong data-start=\"1250\" data-end=\"1262\"\u003ePistons:\u003c\/strong\u003e Forged aluminum\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1281\" data-end=\"1358\"\u003e \u003cp data-start=\"1283\" data-end=\"1358\"\u003e\u003cstrong data-start=\"1283\" data-end=\"1302\"\u003eCylinder Heads:\u003c\/strong\u003e CNC-ported LS7 aluminum heads with 2.20”\/1.61” valves\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1359\" data-end=\"1436\"\u003e \u003cp data-start=\"1361\" data-end=\"1436\"\u003e\u003cstrong data-start=\"1361\" data-end=\"1374\"\u003eCamshaft:\u003c\/strong\u003e Hydraulic roller, .591\/.591 lift, 227°\/242° duration @ .050\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1437\" data-end=\"1469\"\u003e \u003cp data-start=\"1439\" data-end=\"1469\"\u003e\u003cstrong data-start=\"1439\" data-end=\"1455\"\u003eRocker Arms:\u003c\/strong\u003e 1.8:1 ratio\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1470\" data-end=\"1493\"\u003e \u003cp data-start=\"1472\" data-end=\"1493\"\u003e\u003cstrong data-start=\"1472\" data-end=\"1484\"\u003eMax RPM:\u003c\/strong\u003e 7,000+\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"1495\" data-end=\"1498\"\u003e \u003ch3 data-start=\"1500\" data-end=\"1523\"\u003e\u003cstrong data-start=\"1504\" data-end=\"1523\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"1524\" data-end=\"1821\"\u003e \u003cli data-start=\"1524\" data-end=\"1554\"\u003e \u003cp data-start=\"1526\" data-end=\"1554\"\u003eFully assembled long block\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1555\" data-end=\"1581\"\u003e \u003cp data-start=\"1557\" data-end=\"1581\"\u003eLS7 CNC aluminum heads\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1582\" data-end=\"1611\"\u003e \u003cp data-start=\"1584\" data-end=\"1611\"\u003eHydraulic roller camshaft\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1612\" data-end=\"1644\"\u003e \u003cp data-start=\"1614\" data-end=\"1644\"\u003eLS7 forged rotating assembly\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1645\" data-end=\"1693\"\u003e \u003cp data-start=\"1647\" data-end=\"1693\"\u003eTiming cover, valve covers, and valley cover\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1694\" data-end=\"1715\"\u003e \u003cp data-start=\"1696\" data-end=\"1715\"\u003eHarmonic balancer\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1716\" data-end=\"1738\"\u003e \u003cp data-start=\"1718\" data-end=\"1738\"\u003eOil pan (wet sump)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1739\" data-end=\"1821\"\u003e \u003cp data-start=\"1741\" data-end=\"1821\"\u003eIntake manifold, throttle body, fuel system, ECU \u0026amp; wiring harness \u003cem data-start=\"1807\" data-end=\"1821\"\u003enot included\u003c\/em\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"1823\" data-end=\"1826\"\u003e \u003ch3 data-start=\"1828\" data-end=\"1845\"\u003e\u003cstrong data-start=\"1832\" data-end=\"1845\"\u003eIdeal For\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"1846\" data-end=\"1987\"\u003e \u003cli data-start=\"1846\" data-end=\"1868\"\u003e \u003cp data-start=\"1848\" data-end=\"1868\"\u003ePro-touring builds\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1869\" data-end=\"1898\"\u003e \u003cp data-start=\"1871\" data-end=\"1898\"\u003eRoad racing and autocross\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1899\" data-end=\"1931\"\u003e \u003cp data-start=\"1901\" data-end=\"1931\"\u003eHigh-performance street cars\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1932\" data-end=\"1987\"\u003e \u003cp data-start=\"1934\" data-end=\"1987\"\u003eEngine swaps (Camaro, Corvette, Chevelle, Nova, etc.)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"1989\" data-end=\"1992\"\u003e \u003ch3 data-start=\"1994\" data-end=\"2023\"\u003e\u003cstrong data-start=\"1998\" data-end=\"2023\"\u003eWhy Choose the LS427?\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"2024\" data-end=\"2212\"\u003e \u003cli data-start=\"2024\" data-end=\"2082\"\u003e \u003cp data-start=\"2026\" data-end=\"2082\"\u003e\u003cstrong data-start=\"2026\" data-end=\"2082\"\u003eFactory-engineered reliability with race-grade power\u003c\/strong\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2083\" data-end=\"2143\"\u003e \u003cp data-start=\"2085\" data-end=\"2143\"\u003e\u003cstrong data-start=\"2085\" data-end=\"2143\"\u003ePerfect blend of torque, RPM range, and street manners\u003c\/strong\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2144\" data-end=\"2212\"\u003e \u003cp data-start=\"2146\" data-end=\"2212\"\u003e\u003cstrong data-start=\"2146\" data-end=\"2212\"\u003eLS-family compatibility for easy swaps and aftermarket support\u003c\/strong\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"2214\" data-end=\"2217\"\u003e \u003ch3 data-start=\"2219\" data-end=\"2244\"\u003e\u003cstrong data-start=\"2223\" data-end=\"2244\"\u003eSpecs at a Glance\u003c\/strong\u003e\u003c\/h3\u003e \u003cdiv class=\"_tableContainer_80l1q_1\"\u003e \u003cdiv class=\"_tableWrapper_80l1q_14 group flex w-fit flex-col-reverse\"\u003e \u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2246\" data-end=\"3077\"\u003e \u003cthead data-start=\"2246\" data-end=\"2309\"\u003e \u003ctr data-start=\"2246\" data-end=\"2309\"\u003e \u003cth data-start=\"2246\" data-end=\"2272\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2248\" data-end=\"2265\"\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e \u003cth data-start=\"2272\" data-end=\"2309\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2274\" data-end=\"2284\"\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody data-start=\"2374\" data-end=\"3077\"\u003e \u003ctr data-start=\"2374\" data-end=\"2437\"\u003e \u003ctd data-start=\"2374\" data-end=\"2400\" data-col-size=\"sm\"\u003eDisplacement\u003c\/td\u003e \u003ctd data-start=\"2400\" data-end=\"2437\" data-col-size=\"sm\"\u003e7.0L (427 CID)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2438\" data-end=\"2501\"\u003e \u003ctd data-start=\"2438\" data-end=\"2464\" data-col-size=\"sm\"\u003eHorsepower\u003c\/td\u003e \u003ctd data-start=\"2464\" data-end=\"2501\" data-col-size=\"sm\"\u003e570 HP @ 6,200 RPM\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2502\" data-end=\"2565\"\u003e \u003ctd data-start=\"2502\" data-end=\"2528\" data-col-size=\"sm\"\u003eTorque\u003c\/td\u003e \u003ctd data-start=\"2528\" data-end=\"2565\" data-col-size=\"sm\"\u003e540 lb-ft @ 4,800 RPM\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2566\" data-end=\"2629\"\u003e \u003ctd data-start=\"2566\" data-end=\"2592\" data-col-size=\"sm\"\u003eCompression Ratio\u003c\/td\u003e \u003ctd data-start=\"2592\" data-end=\"2629\" data-col-size=\"sm\"\u003e11.0:1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2630\" data-end=\"2693\"\u003e \u003ctd data-start=\"2630\" data-end=\"2656\" data-col-size=\"sm\"\u003eBlock Material\u003c\/td\u003e \u003ctd data-start=\"2656\" data-end=\"2693\" data-col-size=\"sm\"\u003eAluminum\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2694\" data-end=\"2757\"\u003e \u003ctd data-start=\"2694\" data-end=\"2720\" data-col-size=\"sm\"\u003eHead Material\u003c\/td\u003e \u003ctd data-start=\"2720\" data-end=\"2757\" data-col-size=\"sm\"\u003eAluminum (CNC-Ported)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2758\" data-end=\"2821\"\u003e \u003ctd data-start=\"2758\" data-end=\"2784\" data-col-size=\"sm\"\u003eCamshaft Type\u003c\/td\u003e \u003ctd data-start=\"2784\" data-end=\"2821\" data-col-size=\"sm\"\u003eHydraulic Roller\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2822\" data-end=\"2885\"\u003e \u003ctd data-start=\"2822\" data-end=\"2848\" data-col-size=\"sm\"\u003eCrankshaft\u003c\/td\u003e \u003ctd data-start=\"2848\" data-end=\"2885\" data-col-size=\"sm\"\u003eForged Steel\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2886\" data-end=\"2949\"\u003e \u003ctd data-start=\"2886\" data-end=\"2912\" data-col-size=\"sm\"\u003eFuel Type\u003c\/td\u003e \u003ctd data-start=\"2912\" data-end=\"2949\" data-col-size=\"sm\"\u003ePremium Pump Gas (91+ Octane)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2950\" data-end=\"3013\"\u003e \u003ctd data-start=\"2950\" data-end=\"2976\" data-col-size=\"sm\"\u003eRedline\u003c\/td\u003e \u003ctd data-start=\"2976\" data-end=\"3013\" data-col-size=\"sm\"\u003eOver 7,000 RPM\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3014\" data-end=\"3077\"\u003e \u003ctd data-start=\"3014\" data-end=\"3040\" data-col-size=\"sm\"\u003eBalance Type\u003c\/td\u003e \u003ctd data-start=\"3040\" data-end=\"3077\" data-col-size=\"sm\"\u003eInternal\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cdiv class=\"sticky end-(--thread-content-margin) h-0 self-end select-none\"\u003e \u003cdiv class=\"absolute end-0 flex items-end\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003chr data-start=\"3079\" data-end=\"3082\"\u003e \u003ch3 data-start=\"3084\" data-end=\"3103\"\u003e\u003cstrong data-start=\"3091\" data-end=\"3103\"\u003ePro Tip:\u003c\/strong\u003e\u003c\/h3\u003e \u003cp data-start=\"3104\" data-end=\"3331\"\u003ePair the LS427 with a Holley EFI system and a T56 Magnum for an unbeatable street-and-strip combo. Explore compatible accessories in our \u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3241\" data-end=\"3330\"\u003eLS Engine Parts Collection\u003c\/a\u003e.\u003c\/p\u003e \u003chr data-start=\"3333\" data-end=\"3336\"\u003e \u003ch3 data-start=\"3338\" data-end=\"3358\"\u003eRelated Links\u003c\/h3\u003e \u003cul data-start=\"3359\" data-end=\"3655\"\u003e \u003cli data-start=\"3359\" data-end=\"3472\"\u003e \u003cp data-start=\"3361\" data-end=\"3472\"\u003e\u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3361\" data-end=\"3470\"\u003eLS Crate Engines: Everything You Need to Know\u003c\/a\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3473\" data-end=\"3564\"\u003e \u003cp data-start=\"3475\" data-end=\"3564\"\u003e\u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3475\" data-end=\"3562\"\u003eLS3 vs LS7: Which is Right for You?\u003c\/a\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3565\" data-end=\"3655\"\u003e \u003cp data-start=\"3567\" data-end=\"3655\"\u003e\u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3567\" data-end=\"3655\"\u003eLS Engine Swap Kits \u0026amp; Mounts\u003c\/a\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"3657\" data-end=\"3660\"\u003e \u003ch3 data-start=\"3662\" data-end=\"3716\"\u003e\u003cstrong data-start=\"3668\" data-end=\"3716\"\u003eChevrolet Performance Quality – Built to Win\u003c\/strong\u003e\u003c\/h3\u003e \u003cp data-start=\"3717\" data-end=\"3919\"\u003eBacked by decades of GM motorsports engineering, this engine is built by Chevrolet Performance and is ideal for demanding enthusiasts who don’t settle for less than 500+ horsepower—right out of the box.\u003c\/p\u003e \u003ch3 data-start=\"193\" data-end=\"257\"\u003e\u003cstrong data-start=\"200\" data-end=\"257\"\u003eLS427 vs. LS3 vs. LS7 vs. LT1 Crate Engine Comparison\u003c\/strong\u003e\u003c\/h3\u003e \u003cdiv class=\"_tableContainer_80l1q_1\"\u003e \u003cdiv class=\"_tableWrapper_80l1q_14 group flex w-fit flex-col-reverse\"\u003e \u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-start=\"259\" data-end=\"3034\"\u003e \u003cthead data-start=\"259\" data-end=\"458\"\u003e \u003ctr data-start=\"259\" data-end=\"458\"\u003e \u003cth data-start=\"259\" data-end=\"285\" data-col-size=\"sm\"\u003eFeature \/ Engine\u003c\/th\u003e \u003cth data-start=\"285\" data-end=\"325\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"287\" data-end=\"307\"\u003eLS427 (19421004)\u003c\/strong\u003e\u003c\/th\u003e \u003cth data-start=\"325\" data-end=\"369\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"327\" data-end=\"345\"\u003eLS3 (19419865)\u003c\/strong\u003e\u003c\/th\u003e \u003cth data-start=\"369\" data-end=\"413\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"371\" data-end=\"389\"\u003eLS7 (19329246)\u003c\/strong\u003e\u003c\/th\u003e \u003cth data-start=\"413\" data-end=\"458\" data-col-size=\"md\"\u003e\u003cstrong data-start=\"415\" data-end=\"433\"\u003eLT1 (19431955)\u003c\/strong\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody data-start=\"658\" data-end=\"3034\"\u003e \u003ctr data-start=\"658\" data-end=\"856\"\u003e \u003ctd data-start=\"658\" data-end=\"683\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"660\" data-end=\"676\"\u003eDisplacement\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"683\" data-end=\"724\" data-col-size=\"sm\"\u003e7.0L \/ 427 CID\u003c\/td\u003e \u003ctd data-start=\"724\" data-end=\"767\" data-col-size=\"sm\"\u003e6.2L \/ 376 CID\u003c\/td\u003e \u003ctd data-start=\"767\" data-end=\"811\" data-col-size=\"sm\"\u003e7.0L \/ 427 CID\u003c\/td\u003e \u003ctd data-start=\"811\" data-end=\"856\" data-col-size=\"md\"\u003e6.2L \/ 376 CID\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"857\" data-end=\"1054\"\u003e \u003ctd data-start=\"857\" data-end=\"882\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"859\" data-end=\"873\"\u003eHorsepower\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"882\" data-end=\"922\" data-col-size=\"sm\"\u003e570 HP @ 6,200 RPM\u003c\/td\u003e \u003ctd data-start=\"922\" data-end=\"965\" data-col-size=\"sm\"\u003e430 HP @ 5,900 RPM\u003c\/td\u003e \u003ctd data-start=\"965\" data-end=\"1009\" data-col-size=\"sm\"\u003e505 HP @ 6,300 RPM\u003c\/td\u003e \u003ctd data-start=\"1009\" data-end=\"1054\" data-col-size=\"md\"\u003e460 HP @ 6,000 RPM\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1055\" data-end=\"1252\"\u003e \u003ctd data-start=\"1055\" data-end=\"1080\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1057\" data-end=\"1067\"\u003eTorque\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1080\" data-end=\"1120\" data-col-size=\"sm\"\u003e540 lb-ft @ 4,800 RPM\u003c\/td\u003e \u003ctd data-start=\"1120\" data-end=\"1163\" data-col-size=\"sm\"\u003e425 lb-ft @ 4,600 RPM\u003c\/td\u003e \u003ctd data-start=\"1163\" data-end=\"1207\" data-col-size=\"sm\"\u003e470 lb-ft @ 4,800 RPM\u003c\/td\u003e \u003ctd data-start=\"1207\" data-end=\"1252\" data-col-size=\"md\"\u003e465 lb-ft @ 4,600 RPM\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1253\" data-end=\"1451\"\u003e \u003ctd data-start=\"1253\" data-end=\"1278\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1255\" data-end=\"1276\"\u003eCompression Ratio\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1278\" data-end=\"1319\" data-col-size=\"sm\"\u003e11.0:1\u003c\/td\u003e \u003ctd data-start=\"1319\" data-end=\"1362\" data-col-size=\"sm\"\u003e10.7:1\u003c\/td\u003e \u003ctd data-start=\"1362\" data-end=\"1406\" data-col-size=\"sm\"\u003e11.0:1\u003c\/td\u003e \u003ctd data-start=\"1406\" data-end=\"1451\" data-col-size=\"md\"\u003e11.5:1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1452\" data-end=\"1650\"\u003e \u003ctd data-start=\"1452\" data-end=\"1477\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1454\" data-end=\"1472\"\u003eBlock Material\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1477\" data-end=\"1518\" data-col-size=\"sm\"\u003eAluminum\u003c\/td\u003e \u003ctd data-start=\"1518\" data-end=\"1561\" data-col-size=\"sm\"\u003eAluminum\u003c\/td\u003e \u003ctd data-start=\"1561\" data-end=\"1605\" data-col-size=\"sm\"\u003eAluminum\u003c\/td\u003e \u003ctd data-start=\"1605\" data-end=\"1650\" data-col-size=\"md\"\u003eAluminum\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1651\" data-end=\"1848\"\u003e \u003ctd data-start=\"1651\" data-end=\"1676\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1653\" data-end=\"1666\"\u003eHead Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1676\" data-end=\"1716\" data-col-size=\"sm\"\u003eCNC-Ported LS7 Aluminum\u003c\/td\u003e \u003ctd data-start=\"1716\" data-end=\"1759\" data-col-size=\"sm\"\u003eLS3 Aluminum\u003c\/td\u003e \u003ctd data-start=\"1759\" data-end=\"1803\" data-col-size=\"sm\"\u003eCNC-Ported LS7 Aluminum\u003c\/td\u003e \u003ctd data-start=\"1803\" data-end=\"1848\" data-col-size=\"md\"\u003eLT1 Aluminum w\/ Direct Injection\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1849\" data-end=\"2043\"\u003e \u003ctd data-start=\"1849\" data-end=\"1874\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1851\" data-end=\"1863\"\u003eCamshaft\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1874\" data-end=\"1913\" data-col-size=\"sm\"\u003e.591\/.591 Lift, 227°\/242° @ .050\u003c\/td\u003e \u003ctd data-start=\"1913\" data-end=\"1955\" data-col-size=\"sm\"\u003e.551\/.522 Lift, 204°\/211° @ .050\u003c\/td\u003e \u003ctd data-start=\"1955\" data-end=\"1998\" data-col-size=\"sm\"\u003e.591\/.591 Lift, 211°\/230° @ .050\u003c\/td\u003e \u003ctd data-start=\"1998\" data-end=\"2043\" data-col-size=\"md\"\u003eVariable Valve Timing Camshaft\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2044\" data-end=\"2240\"\u003e \u003ctd data-start=\"2044\" data-end=\"2069\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2046\" data-end=\"2063\"\u003eFuel Delivery\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2069\" data-end=\"2109\" data-col-size=\"sm\"\u003eNot Included (Add aftermarket EFI)\u003c\/td\u003e \u003ctd data-start=\"2109\" data-end=\"2152\" data-col-size=\"sm\"\u003eEFI (included)\u003c\/td\u003e \u003ctd data-start=\"2152\" data-end=\"2196\" data-col-size=\"sm\"\u003eEFI (included)\u003c\/td\u003e \u003ctd data-start=\"2196\" data-end=\"2240\" data-col-size=\"md\"\u003eDirect Injection (included)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2241\" data-end=\"2439\"\u003e \u003ctd data-start=\"2241\" data-end=\"2266\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2243\" data-end=\"2254\"\u003eRedline\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2266\" data-end=\"2307\" data-col-size=\"sm\"\u003e7,000+ RPM\u003c\/td\u003e \u003ctd data-start=\"2307\" data-end=\"2350\" data-col-size=\"sm\"\u003e6,600 RPM\u003c\/td\u003e \u003ctd data-start=\"2350\" data-end=\"2394\" data-col-size=\"sm\"\u003e7,000+ RPM\u003c\/td\u003e \u003ctd data-start=\"2394\" data-end=\"2439\" data-col-size=\"md\"\u003e6,600 RPM\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2440\" data-end=\"2638\"\u003e \u003ctd data-start=\"2440\" data-end=\"2465\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2442\" data-end=\"2453\"\u003eBalance\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2465\" data-end=\"2506\" data-col-size=\"sm\"\u003eInternal\u003c\/td\u003e \u003ctd data-start=\"2506\" data-end=\"2549\" data-col-size=\"sm\"\u003eInternal\u003c\/td\u003e \u003ctd data-start=\"2549\" data-end=\"2593\" data-col-size=\"sm\"\u003eInternal\u003c\/td\u003e \u003ctd data-start=\"2593\" data-end=\"2638\" data-col-size=\"md\"\u003eInternal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2639\" data-end=\"2836\"\u003e \u003ctd data-start=\"2639\" data-end=\"2664\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2641\" data-end=\"2657\"\u003eStreet-Ready\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2664\" data-end=\"2704\" data-col-size=\"sm\"\u003eYes (with EFI add-on)\u003c\/td\u003e \u003ctd data-start=\"2704\" data-end=\"2747\" data-col-size=\"sm\"\u003eYes\u003c\/td\u003e \u003ctd data-start=\"2747\" data-end=\"2791\" data-col-size=\"sm\"\u003eYes\u003c\/td\u003e \u003ctd data-start=\"2791\" data-end=\"2836\" data-col-size=\"md\"\u003eYes\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2837\" data-end=\"3034\"\u003e \u003ctd data-start=\"2837\" data-end=\"2862\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2839\" data-end=\"2851\"\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2862\" data-end=\"2902\" data-col-size=\"sm\"\u003eRacing \/ Pro-Touring \/ Strip Builds\u003c\/td\u003e \u003ctd data-start=\"2902\" data-end=\"2945\" data-col-size=\"sm\"\u003eBudget-Friendly Street Builds\u003c\/td\u003e \u003ctd data-start=\"2945\" data-end=\"2989\" data-col-size=\"sm\"\u003eStreet\/Track Performance Builds\u003c\/td\u003e \u003ctd data-start=\"2989\" data-end=\"3034\" data-col-size=\"md\"\u003eModern Restomods \/ Daily-Driveable Builds\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cdiv class=\"sticky end-(--thread-content-margin) h-0 self-end select-none\"\u003e \u003cdiv class=\"absolute end-0 flex items-end\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003chr data-start=\"3036\" data-end=\"3039\"\u003e \u003ch3 data-start=\"3041\" data-end=\"3080\"\u003e\u003cstrong data-start=\"3048\" data-end=\"3080\"\u003eWhich One Should You Choose?\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"3082\" data-end=\"3532\"\u003e \u003cli data-start=\"3082\" data-end=\"3206\"\u003e \u003cp data-start=\"3084\" data-end=\"3206\"\u003e✅ \u003cstrong data-start=\"3086\" data-end=\"3095\"\u003eLS427\u003c\/strong\u003e – For high-horsepower street or race builds that need torque and track reliability without forced induction.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3207\" data-end=\"3292\"\u003e \u003cp data-start=\"3209\" data-end=\"3292\"\u003e✅ \u003cstrong data-start=\"3211\" data-end=\"3218\"\u003eLS3\u003c\/strong\u003e – Great all-around value for restomods, hot rods, and weekend cruisers.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3293\" data-end=\"3395\"\u003e \u003cp data-start=\"3295\" data-end=\"3395\"\u003e✅ \u003cstrong data-start=\"3297\" data-end=\"3304\"\u003eLS7\u003c\/strong\u003e – Legendary performance with better high-RPM breathing, ideal for track day enthusiasts.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3396\" data-end=\"3532\"\u003e \u003cp data-start=\"3398\" data-end=\"3532\"\u003e✅ \u003cstrong data-start=\"3400\" data-end=\"3407\"\u003eLT1\u003c\/strong\u003e – For modern drivability with direct injection and variable valve timing—great for newer vehicles and fuel-conscious builds.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"3534\" data-end=\"3537\"\u003e \u003ch3 data-start=\"3539\" data-end=\"3588\"\u003eInternal Links for Deeper Shopping Funnels\u003c\/h3\u003e \u003cul data-start=\"3590\" data-end=\"3942\"\u003e \u003cli data-start=\"3590\" data-end=\"3681\"\u003e \u003cp data-start=\"3592\" data-end=\"3681\"\u003e\u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3592\" data-end=\"3681\"\u003eShop All LS Crate Engines\u003c\/a\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3682\" data-end=\"3756\"\u003e \u003cp data-start=\"3684\" data-end=\"3756\"\u003e\u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3684\" data-end=\"3756\"\u003eLS Swap Kits\u003c\/a\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3757\" data-end=\"3848\"\u003e \u003cp data-start=\"3759\" data-end=\"3848\"\u003e\u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3759\" data-end=\"3848\"\u003eEFI Conversion Kits\u003c\/a\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3849\" data-end=\"3942\"\u003e \u003cp data-start=\"3851\" data-end=\"3942\"\u003e\u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"3851\" data-end=\"3942\"\u003eLT Crate Engines Collection\u003c\/a\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"TITANPARTHUB","offers":[{"title":"Default Title","offer_id":52160960299239,"sku":null,"price":20214.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/7806\/3335\/files\/16c4c16b-Introduces-LS427-Crate-Engine-570.jpg?v=1780566415","url":"https:\/\/titanparthub.com\/products\/chevrolet-performance-ls427-7-0l-570-hp-long-block-crate-engine-19421004","provider":"TITANPARTHUB","version":"1.0","type":"link"}