{"id":44548,"date":"2020-10-19T07:00:39","date_gmt":"2020-10-19T11:00:39","guid":{"rendered":"http:\/\/www.dodgegarage.com\/news-api\/?p=44548"},"modified":"2024-03-25T11:22:13","modified_gmt":"2024-03-25T15:22:13","slug":"gen-iii-hemi-engine-quick-reference-guide-part-iii","status":"publish","type":"post","link":"https:\/\/test.api.dodgegarage.com\/news\/how-to\/2020\/10\/gen-iii-hemi-engine-quick-reference-guide-part-iii.html","title":{"rendered":"GEN III HEMI®<\/sup> Engine Quick Reference Guide Part III"},"content":{"rendered":"\n

BIGGER AND BADDER \u2013 2005-2010 6.1L HEMI\u00ae<\/sup> V8 ENGINE<\/strong><\/h1>\n\n\n\n

2005-2010 6.1L HEMI V8<\/strong><\/h2>\n\n\n\n

Over the past few weeks, we’ve gone over the 5.7L HEMI engine from 2003-2008<\/a> and then followed up with the changes to the engine for 2009-Current<\/a>. While the 5.7L HEMI engine was being developed, the SRT\u00ae<\/sup> engineers were already working on a bigger displacement version that would make this modern powerplant even better \u2013 the 6.1L HEMI engine. It produced 425 horsepower in the Challenger SRT8, Charger\/Magnum SRT8 and Chrysler 300C SRT8 passenger cars, and 420 horsepower in the Jeep\u00ae<\/sub> Grand Cherokee SRT8. The 6.1L HEMI engine was built between 2005 and 2010 and despite the decent production numbers, finding a good used 6.1L HEMI engine is becoming more difficult as they are getting hard to locate in salvage yards and swap meets. Even a remanufactured 6.1L HEMI engine can be scarce due to lack of cores. But if you do some detective work, they\u2019re still out there. If you\u2019re lucky enough to find one, here\u2019s some pertinent and helpful information you should know on how to spot the bigger and badder 6.1L HEMI V8 engine. <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

ENGINE\nBLOCKS AND ROTATING ASSEMBLY<\/strong><\/h2>\n\n\n\n

Like its 5.7L counterpart, all 6.1L HEMI engines were built at\nChrysler\u2019s Saltillo Engine Plant in Mexico. The 6.1L HEMI blocks are cast iron and are painted\norange. They have \u201c6.1L\u201d cast on the driver\u2019s side of the block above the oil\npan rail. If you convert the 6.1L displacement to cubic inches, it\u2019s 372. To\nget to this, the 6.1L HEMI engine has a 4.055-inch bore and a 3.58-inch stroke.\nThe stock compression ratio is 10.2:1, which requires the use of premium fuel\nfor best performance. <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

Mopar\u00ae<\/sub> fans may think the factory-applied orange paint on the 6.1L engine\nblock is to pay homage to the iconic 426 HEMI engine of the 1960s and early\n1970s that were also painted orange. Actually, the orange paint on the 6.1L HEMI\nengine blocks serves as an identifier for the plant workers to distinguish it\nfrom the 5.7L HEMI blocks (which all get painted black) during the machining\nand assembly process at the Saltillo Engine Plant. However, the \u201cHEMI Orange\u201d\npaint on the 6.1L HEMI blocks (and current 6.4L and 6.2L HEMI blocks) is a nice\nthrowback touch to the original and iconic 426 HEMI engine. <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

The casting number on 6.1L blocks can be found on the front of the\nengine where the timing chain cover attaches. The casting number on the 6.1L\nHEMI engine block is 05037388AB. These blocks are considered a thin wall casting\nbut can safely be bored out to .030 inches during the rebuilding process. <\/strong><\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

When it comes to the rotating assembly, the SRT engineers beefed\nup the crankshaft on the 6.1L HEMI engine and went with forged steel versus cast iron\non the 5.7L engines. The pistons are a hypereutectic style (like\nthe 5.7L HEMI engine) but with a floating pin versus a pressed-pin design. The\n6.1L HEMI pistons are 4.055 inches in diameter and weight 435 grams, and the\nconnecting rods measure 6.242 inches centerline to centerline in length (same\nas the 5.7L). Remember, if you\u2019re going to install an aftermarket supercharger\nor turbocharger on a 6.1L HEMI engine and still use the production pistons and\nconnecting rods, you\u2019ll be limited to how much boost you can run as to not hurt\nthe engine. <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

INTAKE\/EXHAUST\nMANIFOLDS AND CYLINDER HEADS <\/strong><\/h2>\n\n\n\n

The 6.1L HEMI engine can also be identified by its long fixed runner\/barrel-shaped aluminum intake manifold. It makes good power from 2,000 RPM all the way up\nto the 6,200 RPM redline. The 6.1L HEMI engine also has the dubious honor of\nbeing the last production Chrysler V8 engine to have a factory-installed\naluminum intake manifold. The 6.1L HEMI engine used an 80mm throttle body that\nhas enough airflow to handle many bolt-on engine modifications. <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

The 6.1L HEMI engine comes standard with aluminum tubular exhaust\nmanifolds that are low-restriction and very efficient. They also provide a\nlow-cost performance upgrade if you\u2019re replacing the cast iron exhaust\nmanifolds on a 5.7L HEMI engine project when your budget can\u2019t afford\naftermarket long tube headers. <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

Like all GEN III HEMI cylinder\nheads, the production 6.1L version is made from aluminum and features a\ntwin-plug design. The intake valve head diameter is 2.08 inches (like the Mopar\nbig-block engines of the 1960s and 1970s), and the exhaust valve head measures\n1.60 inches. The cylinder heads weigh about 30 pounds each with valves and\nvalve springs installed. Stock, the 6.1L HEMI cylinder head flows extremely well\nand doesn\u2019t need extensive porting for most street and strip applications. <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

To identify a 6.1L HEMI cylinder head,\nit has a casting number of 5037369AA located above the exhaust ports. Remember,\nthere are right and left cylinder heads based on the machining of the exhaust\nport flange. Because of the efficient design of the 6.1L HEMI engine\u2019s intake\nand exhaust ports, the cylinder head moves a lot of air across the engine\u2019s\npower band. A big part of this is due to the 6.1L HEMI engine\u2019s more aggressive\nhydraulic roller camshaft. The SRT engineers increased the valve lift from\n0.472 inches to 0.571 inches. If you compare this to performance camshafts of\nthe 1960s and 1970s, the valve lift is a big number yet the 6.1L HEMI engine behaves\nvery well in stop-and-go traffic without the traditional \u201cchoppy\u201d idle qualities\nassociated on some high-performance camshafts. <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"HEMI
The 2006 Jeep\u00ae<\/sub> Grand Cherokee SRT8 is powered by an SRT\u00ae<\/sup>-developed 6.1-liter HEMI\u00ae<\/sup> V8 engine producing 415 horsepower and 410 lb-ft. of torque.<\/figcaption><\/figure>\n\n\n\n

Like all GEN III HEMI engines,\nthe 6.1L has the same exterior dimensions as the 5.7L, 6.2L and the 6.4L. As\nwith all GEN III HEMI engines, any Mopar small-block transmission will bolt-up\nto the block. This will eliminate any mysteries when swapping a 6.1L GEN HEMI engine\ninto an older Mopar car or truck. If you need more info and parts for your GEN\nIII HEMI engine project, these companies have the goods to make your ride hit on all\neight!<\/p>\n\n\n\n

Mopar.com<\/a>; Holley.com<\/a>; Edelbrock.com<\/a>; RosevilleMoparts.com<\/a>; ManciniRacing.com<\/a>; ShopHEMI.com<\/a>; MMXModernMusclextreme<\/a> <\/p>\n\n\n\n

\"HEMI<\/figure>\n\n\n\n

Next week in the GEN III HEMI Engine Quick Reference Guide, the mighty 392 is born and it rotates the earth!<\/p>\n\n\n\n

All GENIII HEMI Engine Quick Reference Guides:
Part I<\/a>
Part II<\/a>
Part IV<\/a>
Part V<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

BIGGER AND BADDER \u2013 2005-2010 6.1L HEMI\u00ae V8 ENGINE 2005-2010 6.1L HEMI V8 Over the past few weeks, we’ve gone over the 5.7L HEMI engine from 2003-2008 and then followed up with the changes to the engine for 2009-Current. While the 5.7L HEMI engine was being developed, the SRT\u00ae engineers were already working on a bigger displacement version that would make this modern powerplant even better \u2013 the 6.1L HEMI engine. It produced 425 horsepower in the Challenger SRT8, Charger\/Magnum SRT8 and Chrysler 300C SRT8 passenger cars, and 420 horsepower […]<\/p>\n","protected":false},"author":29,"featured_media":44619,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[639],"tags":[2011,547],"class_list":["post-44548","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to","tag-hemi-engine","tag-mopar"],"acf":[],"custom_fields":{"post_thumbnail_image":"https:\/\/test.api.dodgegarage.com\/news\/wp-content\/uploads\/2020\/10\/feature-3.png","icon_selection":"article","external_link":"","featured_article":[],"upload_background_image":""},"_links":{"self":[{"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/posts\/44548"}],"collection":[{"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/users\/29"}],"replies":[{"embeddable":true,"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/comments?post=44548"}],"version-history":[{"count":18,"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/posts\/44548\/revisions"}],"predecessor-version":[{"id":45568,"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/posts\/44548\/revisions\/45568"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/media\/44619"}],"wp:attachment":[{"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/media?parent=44548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/categories?post=44548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.api.dodgegarage.com\/news\/wp-json\/wp\/v2\/tags?post=44548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}