{"product_id":"summit-racing™-chevy-ls-5-3l-450hp-long-block-crate-engines-sum-150153","title":"Summit Racing™ Chevy LS 5.3L 450HP Long Block Crate Engines SUM-150153","description":"\u003ch3 data-start=\"152\" data-end=\"231\"\u003e\u003cstrong data-start=\"156\" data-end=\"231\"\u003eSummit Racing™ Chevy LS 5.3L 450HP Long Block Crate Engine – SUM-150153\u003c\/strong\u003e\u003c\/h3\u003e \u003cp data-start=\"233\" data-end=\"564\"\u003eUnleash impressive power and LS performance with the \u003cstrong data-start=\"286\" data-end=\"339\"\u003eSummit Racing™ 5.3L 450HP Long Block Crate Engine\u003c\/strong\u003e, part number \u003cstrong data-start=\"353\" data-end=\"367\"\u003eSUM-150153\u003c\/strong\u003e. Built for enthusiasts who demand big horsepower on a budget, this LS-based crate engine offers 450 HP in a compact and reliable package—ideal for hot rods, swaps, or daily driven street machines.\u003c\/p\u003e \u003ch4 data-start=\"566\" data-end=\"591\"\u003e\u003cstrong data-start=\"574\" data-end=\"591\"\u003eKey Features:\u003c\/strong\u003e\u003c\/h4\u003e \u003cul data-start=\"592\" data-end=\"1094\"\u003e \u003cli data-start=\"592\" data-end=\"630\"\u003e \u003cp data-start=\"594\" data-end=\"630\"\u003e\u003cstrong data-start=\"594\" data-end=\"610\"\u003eDisplacement\u003c\/strong\u003e: 5.3L (325 cu. in.)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"631\" data-end=\"655\"\u003e \u003cp data-start=\"633\" data-end=\"655\"\u003e\u003cstrong data-start=\"633\" data-end=\"647\"\u003eHorsepower\u003c\/strong\u003e: 450 HP\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"656\" data-end=\"700\"\u003e \u003cp data-start=\"658\" data-end=\"700\"\u003e\u003cstrong data-start=\"658\" data-end=\"668\"\u003eTorque\u003c\/strong\u003e: Approx. 420 ft-lbs (estimated)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"701\" data-end=\"751\"\u003e \u003cp data-start=\"703\" data-end=\"751\"\u003e\u003cstrong data-start=\"703\" data-end=\"721\"\u003eBlock Material\u003c\/strong\u003e: Cast iron Gen III\/IV LS base\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"752\" data-end=\"798\"\u003e \u003cp data-start=\"754\" data-end=\"798\"\u003e\u003cstrong data-start=\"754\" data-end=\"772\"\u003eCylinder Heads\u003c\/strong\u003e: Aluminum, cathedral port\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"799\" data-end=\"875\"\u003e \u003cp data-start=\"801\" data-end=\"875\"\u003e\u003cstrong data-start=\"801\" data-end=\"813\"\u003eCamshaft\u003c\/strong\u003e: Hydraulic roller performance cam for added power across RPMs\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"876\" data-end=\"921\"\u003e \u003cp data-start=\"878\" data-end=\"921\"\u003e\u003cstrong data-start=\"878\" data-end=\"899\"\u003eCompression Ratio\u003c\/strong\u003e: 10.0:1 (approximate)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"922\" data-end=\"957\"\u003e \u003cp data-start=\"924\" data-end=\"957\"\u003e\u003cstrong data-start=\"924\" data-end=\"935\"\u003eOil Pan\u003c\/strong\u003e: Included (rear sump)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"958\" data-end=\"1019\"\u003e \u003cp data-start=\"960\" data-end=\"1019\"\u003e\u003cstrong data-start=\"960\" data-end=\"1009\"\u003eTiming Cover, Valve Covers, Harmonic Balancer\u003c\/strong\u003e: Included\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1020\" data-end=\"1094\"\u003e \u003cp data-start=\"1022\" data-end=\"1094\"\u003e\u003cstrong data-start=\"1022\" data-end=\"1051\"\u003eFuel System Compatibility\u003c\/strong\u003e: EFI or Carb-ready (requires intake setup)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch4 data-start=\"1096\" data-end=\"1129\"\u003e\u003cstrong data-start=\"1104\" data-end=\"1129\"\u003eBuilt For Versatility\u003c\/strong\u003e\u003c\/h4\u003e \u003cp data-start=\"1130\" data-end=\"1301\"\u003eWhether you’re building a restomod, upgrading your track-day weapon, or doing an LS swap, this crate engine offers serious performance potential without breaking the bank.\u003c\/p\u003e \u003ch4 data-start=\"1303\" data-end=\"1337\"\u003e\u003cstrong data-start=\"1310\" data-end=\"1337\"\u003eWhy Choose This Engine:\u003c\/strong\u003e\u003c\/h4\u003e \u003cul data-start=\"1338\" data-end=\"1565\"\u003e \u003cli data-start=\"1338\" data-end=\"1394\"\u003e \u003cp data-start=\"1340\" data-end=\"1394\"\u003eTrusted \u003cstrong data-start=\"1348\" data-end=\"1366\"\u003eSummit Racing™\u003c\/strong\u003e quality and parts selection\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1395\" data-end=\"1450\"\u003e \u003cp data-start=\"1397\" data-end=\"1450\"\u003eBuilt to handle aftermarket upgrades and power adders\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1451\" data-end=\"1501\"\u003e \u003cp data-start=\"1453\" data-end=\"1501\"\u003eBudget-friendly entry into the \u003cstrong data-start=\"1484\" data-end=\"1495\"\u003eLS swap\u003c\/strong\u003e world\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1502\" data-end=\"1565\"\u003e \u003cp data-start=\"1504\" data-end=\"1565\"\u003eAssembled with name-brand internal components for reliability\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch4 data-start=\"1567\" data-end=\"1595\"\u003e\u003cstrong data-start=\"1575\" data-end=\"1595\"\u003eWhat’s Included:\u003c\/strong\u003e\u003c\/h4\u003e \u003cul data-start=\"1596\" data-end=\"1746\"\u003e \u003cli data-start=\"1596\" data-end=\"1624\"\u003e \u003cp data-start=\"1598\" data-end=\"1624\"\u003eFully assembled long block\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1625\" data-end=\"1660\"\u003e \u003cp data-start=\"1627\" data-end=\"1660\"\u003eAluminum cylinder heads installed\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1661\" data-end=\"1685\"\u003e \u003cp data-start=\"1663\" data-end=\"1685\"\u003eValve train components\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1686\" data-end=\"1711\"\u003e \u003cp data-start=\"1688\" data-end=\"1711\"\u003eOil pan and front cover\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1712\" data-end=\"1746\"\u003e \u003cp data-start=\"1714\" data-end=\"1746\"\u003eHarmonic balancer and rear cover\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"1748\" data-end=\"1751\"\u003e \u003ch3 data-start=\"1753\" data-end=\"1796\"\u003e\u003cstrong data-start=\"1760\" data-end=\"1796\"\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e \u003cp data-start=\"1798\" data-end=\"1960\"\u003e\u003cstrong data-start=\"1798\" data-end=\"1837\"\u003eQ: What vehicles can I use this in?\u003c\/strong\u003e\u003cbr data-start=\"1837\" data-end=\"1840\"\u003eA: Any project that supports LS engine swaps. Common fits include older GM muscle cars, trucks, hot rods, and restomods.\u003c\/p\u003e \u003cp data-start=\"1962\" data-end=\"2100\"\u003e\u003cstrong data-start=\"1962\" data-end=\"1996\"\u003eQ: Does it include a warranty?\u003c\/strong\u003e\u003cbr data-start=\"1996\" data-end=\"1999\"\u003eA: Yes. Summit Racing™ offers a limited warranty—check product details at SummitRacing.com for terms.\u003c\/p\u003e \u003cp data-start=\"2102\" data-end=\"2267\"\u003e\u003cstrong data-start=\"2102\" data-end=\"2140\"\u003eQ: Can I run boost on this engine?\u003c\/strong\u003e\u003cbr data-start=\"2140\" data-end=\"2143\"\u003eA: Yes—with proper tuning and supporting mods, this engine can support forced induction setups like superchargers or turbos.\u003c\/p\u003e \u003chr data-start=\"2269\" data-end=\"2272\"\u003e \u003ch3 data-start=\"2274\" data-end=\"2295\"\u003eRelated Links:\u003c\/h3\u003e \u003cul data-start=\"2296\" data-end=\"2459\"\u003e \u003cli data-start=\"2296\" data-end=\"2376\"\u003e \u003cp data-start=\"2298\" data-end=\"2376\"\u003e\u003ca class=\"cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"2298\" data-end=\"2376\"\u003eShop LS Swap Components\u003c\/a\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2377\" data-end=\"2420\"\u003e \u003cp data-start=\"2379\" data-end=\"2420\"\u003e[Compare with BluePrint LS Crate Engines]\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2421\" data-end=\"2459\"\u003e \u003cp data-start=\"2423\" data-end=\"2459\"\u003e[LS Crate Engine Installation Guide]\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"242\" data-end=\"290\"\u003e\u003cstrong data-start=\"249\" data-end=\"290\"\u003eLS 5.3L Crate Engine Comparison Chart\u003c\/strong\u003e\u003c\/h3\u003e \u003cdiv class=\"_tableContainer_16hzy_1\"\u003e \u003cdiv class=\"_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse\"\u003e \u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-start=\"292\" data-end=\"3044\"\u003e \u003cthead data-start=\"292\" data-end=\"453\"\u003e \u003ctr data-start=\"292\" data-end=\"453\"\u003e \u003cth data-start=\"292\" data-end=\"346\" data-col-size=\"sm\"\u003eFeature \/ Model\u003c\/th\u003e \u003cth data-start=\"346\" data-end=\"378\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"348\" data-end=\"377\"\u003eSummit Racing™ SUM-150153\u003c\/strong\u003e\u003c\/th\u003e \u003cth data-start=\"378\" data-end=\"415\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"380\" data-end=\"414\"\u003eBluePrint 5.3L LS Crate Engine\u003c\/strong\u003e\u003c\/th\u003e \u003cth data-start=\"415\" data-end=\"453\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"417\" data-end=\"451\"\u003eATK HP73C LS 5.3L Crate Engine\u003c\/strong\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody data-start=\"615\" data-end=\"3044\"\u003e \u003ctr data-start=\"615\" data-end=\"776\"\u003e \u003ctd data-start=\"615\" data-end=\"669\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"617\" data-end=\"631\"\u003eHorsepower\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"669\" data-end=\"701\" data-col-size=\"sm\"\u003e450 HP\u003c\/td\u003e \u003ctd data-start=\"701\" data-end=\"738\" data-col-size=\"sm\"\u003e430–460 HP\u003c\/td\u003e \u003ctd data-start=\"738\" data-end=\"776\" data-col-size=\"sm\"\u003e420–450 HP\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"777\" data-end=\"938\"\u003e \u003ctd data-start=\"777\" data-end=\"831\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"779\" data-end=\"796\"\u003eTorque (Est.)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"831\" data-end=\"863\" data-col-size=\"sm\"\u003e~420 lb-ft\u003c\/td\u003e \u003ctd data-start=\"863\" data-end=\"900\" data-col-size=\"sm\"\u003e~450 lb-ft\u003c\/td\u003e \u003ctd data-start=\"900\" data-end=\"938\" data-col-size=\"sm\"\u003e~440 lb-ft\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"939\" data-end=\"1100\"\u003e \u003ctd data-start=\"939\" data-end=\"993\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"941\" data-end=\"957\"\u003eDisplacement\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"993\" data-end=\"1025\" data-col-size=\"sm\"\u003e5.3L \/ 325 cu in\u003c\/td\u003e \u003ctd data-start=\"1025\" data-end=\"1062\" data-col-size=\"sm\"\u003e5.3L \/ 325 cu in\u003c\/td\u003e \u003ctd data-start=\"1062\" data-end=\"1100\" data-col-size=\"sm\"\u003e5.3L \/ 325 cu in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1101\" data-end=\"1262\"\u003e \u003ctd data-start=\"1101\" data-end=\"1155\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1103\" data-end=\"1124\"\u003eCompression Ratio\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1155\" data-end=\"1187\" data-col-size=\"sm\"\u003e~10.0:1\u003c\/td\u003e \u003ctd data-start=\"1187\" data-end=\"1224\" data-col-size=\"sm\"\u003e10.0:1\u003c\/td\u003e \u003ctd data-start=\"1224\" data-end=\"1262\" data-col-size=\"sm\"\u003e9.5:1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1263\" data-end=\"1424\"\u003e \u003ctd data-start=\"1263\" data-end=\"1317\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1265\" data-end=\"1283\"\u003eBlock Material\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1317\" data-end=\"1349\" data-col-size=\"sm\"\u003eCast Iron\u003c\/td\u003e \u003ctd data-start=\"1349\" data-end=\"1386\" data-col-size=\"sm\"\u003eCast Iron\u003c\/td\u003e \u003ctd data-start=\"1386\" data-end=\"1424\" data-col-size=\"sm\"\u003eCast Iron\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1425\" data-end=\"1586\"\u003e \u003ctd data-start=\"1425\" data-end=\"1479\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1427\" data-end=\"1445\"\u003eCylinder Heads\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1479\" data-end=\"1511\" data-col-size=\"sm\"\u003eAluminum Cathedral Port\u003c\/td\u003e \u003ctd data-start=\"1511\" data-end=\"1548\" data-col-size=\"sm\"\u003eAluminum Cathedral Port\u003c\/td\u003e \u003ctd data-start=\"1548\" data-end=\"1586\" data-col-size=\"sm\"\u003eAluminum Cathedral Port\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1587\" data-end=\"1748\"\u003e \u003ctd data-start=\"1587\" data-end=\"1641\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1589\" data-end=\"1601\"\u003eCamshaft\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1641\" data-end=\"1673\" data-col-size=\"sm\"\u003ePerformance Hydraulic Roller\u003c\/td\u003e \u003ctd data-start=\"1673\" data-end=\"1710\" data-col-size=\"sm\"\u003eHydraulic Roller\u003c\/td\u003e \u003ctd data-start=\"1710\" data-end=\"1748\" data-col-size=\"sm\"\u003eMild Performance Roller Cam\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1749\" data-end=\"1910\"\u003e \u003ctd data-start=\"1749\" data-end=\"1803\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1751\" data-end=\"1782\"\u003eFuel Delivery Compatibility\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1803\" data-end=\"1835\" data-col-size=\"sm\"\u003eEFI or Carb-Ready\u003c\/td\u003e \u003ctd data-start=\"1835\" data-end=\"1872\" data-col-size=\"sm\"\u003eEFI\u003c\/td\u003e \u003ctd data-start=\"1872\" data-end=\"1910\" data-col-size=\"sm\"\u003eEFI\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"1911\" data-end=\"2072\"\u003e \u003ctd data-start=\"1911\" data-end=\"1965\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1913\" data-end=\"1933\"\u003eOil Pan Included\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"1965\" data-end=\"1997\" data-col-size=\"sm\"\u003eYes (Rear Sump)\u003c\/td\u003e \u003ctd data-start=\"1997\" data-end=\"2034\" data-col-size=\"sm\"\u003eYes\u003c\/td\u003e \u003ctd data-start=\"2034\" data-end=\"2072\" data-col-size=\"sm\"\u003eYes\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2073\" data-end=\"2234\"\u003e \u003ctd data-start=\"2073\" data-end=\"2127\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2075\" data-end=\"2105\"\u003eHarmonic Balancer Included\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2127\" data-end=\"2159\" data-col-size=\"sm\"\u003eYes\u003c\/td\u003e \u003ctd data-start=\"2159\" data-end=\"2196\" data-col-size=\"sm\"\u003eYes\u003c\/td\u003e \u003ctd data-start=\"2196\" data-end=\"2234\" data-col-size=\"sm\"\u003eYes\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2235\" data-end=\"2396\"\u003e \u003ctd data-start=\"2235\" data-end=\"2289\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2237\" data-end=\"2268\"\u003eComputer \/ Harness Included\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2289\" data-end=\"2321\" data-col-size=\"sm\"\u003eNo\u003c\/td\u003e \u003ctd data-start=\"2321\" data-end=\"2358\" data-col-size=\"sm\"\u003eOptional\u003c\/td\u003e \u003ctd data-start=\"2358\" data-end=\"2396\" data-col-size=\"sm\"\u003eNo\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2397\" data-end=\"2558\"\u003e \u003ctd data-start=\"2397\" data-end=\"2451\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2399\" data-end=\"2422\"\u003eSupercharger Ready?\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2451\" data-end=\"2483\" data-col-size=\"sm\"\u003eYes (with proper tuning)\u003c\/td\u003e \u003ctd data-start=\"2483\" data-end=\"2520\" data-col-size=\"sm\"\u003eYes (some models prepped)\u003c\/td\u003e \u003ctd data-start=\"2520\" data-end=\"2558\" data-col-size=\"sm\"\u003eYes\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2559\" data-end=\"2720\"\u003e \u003ctd data-start=\"2559\" data-end=\"2613\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2561\" data-end=\"2573\"\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2613\" data-end=\"2645\" data-col-size=\"sm\"\u003eLimited Warranty via Summit\u003c\/td\u003e \u003ctd data-start=\"2645\" data-end=\"2682\" data-col-size=\"sm\"\u003e30-Month \/ 50,000 Mile Warranty\u003c\/td\u003e \u003ctd data-start=\"2682\" data-end=\"2720\" data-col-size=\"sm\"\u003e12-Month Unlimited Miles\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2721\" data-end=\"2882\"\u003e \u003ctd data-start=\"2721\" data-end=\"2775\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2723\" data-end=\"2736\"\u003eIdeal For\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2775\" data-end=\"2807\" data-col-size=\"sm\"\u003eBudget LS Swaps, Street Rods\u003c\/td\u003e \u003ctd data-start=\"2807\" data-end=\"2844\" data-col-size=\"sm\"\u003eLS Swaps, Muscle Cars\u003c\/td\u003e \u003ctd data-start=\"2844\" data-end=\"2882\" data-col-size=\"sm\"\u003eTrucks, Muscle Cars\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2883\" data-end=\"3044\"\u003e \u003ctd data-start=\"2883\" data-end=\"2937\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2885\" data-end=\"2907\"\u003ePrice Range (Est.)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd data-start=\"2937\" data-end=\"2969\" data-col-size=\"sm\"\u003e$4,000 – $4,700\u003c\/td\u003e \u003ctd data-start=\"2969\" data-end=\"3006\" data-col-size=\"sm\"\u003e$4,500 – $5,200\u003c\/td\u003e \u003ctd data-start=\"3006\" data-end=\"3044\" data-col-size=\"sm\"\u003e$4,300 – $4,900\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=\"3046\" data-end=\"3049\"\u003e \u003ch3 data-start=\"3051\" data-end=\"3084\"\u003e\u003cstrong data-start=\"3057\" data-end=\"3084\"\u003e​_Summary Recommendations\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"3086\" data-end=\"3461\"\u003e \u003cli data-start=\"3086\" data-end=\"3232\"\u003e \u003cp data-start=\"3088\" data-end=\"3232\"\u003e\u003cstrong data-start=\"3088\" data-end=\"3124\"\u003eChoose Summit Racing™ SUM-150153\u003c\/strong\u003e if you want a \u003cstrong data-start=\"3139\" data-end=\"3184\"\u003ereliable, no-frills 450HP LS crate engine\u003c\/strong\u003e at a great price, ready for EFI or carb setups.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3233\" data-end=\"3343\"\u003e \u003cp data-start=\"3235\" data-end=\"3343\"\u003e\u003cstrong data-start=\"3235\" data-end=\"3255\"\u003eChoose BluePrint\u003c\/strong\u003e if you want a \u003cstrong data-start=\"3270\" data-end=\"3317\"\u003elonger warranty and dyno-tested performance\u003c\/strong\u003e with great streetability.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3344\" data-end=\"3461\"\u003e \u003cp data-start=\"3346\" data-end=\"3461\"\u003e\u003cstrong data-start=\"3346\" data-end=\"3360\"\u003eChoose ATK\u003c\/strong\u003e if you’re looking for a \u003cstrong data-start=\"3385\" data-end=\"3415\"\u003etorque-focused 5.3L engine\u003c\/strong\u003e, especially for trucks or daily-driven swaps.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"TITANPARTHUB","offers":[{"title":"Default Title","offer_id":52160924090599,"sku":null,"price":3803.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/7806\/3335\/files\/5b26987b-sum-150153_dp_xl.jpg?v=1780566307","url":"https:\/\/titanparthub.com\/products\/summit-racing%e2%84%a2-chevy-ls-5-3l-450hp-long-block-crate-engines-sum-150153","provider":"TITANPARTHUB","version":"1.0","type":"link"}