{"id":145020,"date":"2026-02-10T06:00:57","date_gmt":"2026-02-10T12:00:57","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=145020"},"modified":"2026-07-26T18:17:14","modified_gmt":"2026-07-26T23:17:14","slug":"renntech-is-building-a-widebody-mercedes-c126-with-a-660-hp-m120-v12","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=145020","title":{"rendered":"RENNtech is Building a Widebody Mercedes C126 with a 660 hp M120 V12"},"content":{"rendered":"

\"RENNtech<\/a><\/p>\n

RENNtech<\/a> is building 12 special V12-powered “SLEDGEHAMMER<\/a>” vehicles at their company in Florida. The project starts with a Mercedes C126 SEC<\/a> which will receive an upgraded M120 V12<\/a> with displacement increased to 7.5 liters. RENNtech rebuilds the motor with forged internals, ported heads, “advanced” intake system, and equal-length headers. They estimate the naturally aspirated V12 will produce 660 hp (492 kW) and 650 lb-ft (881 Nm) of torque. Power is sent to the rear wheels through a seven-speed manual transaxle. We look forward to more details on the unique project as we approach the 2027 launch date. <\/p>\n

Update:<\/strong> (2026-Feb-13) included more powertrain specs<\/p>\n

\"RENNtech<\/a><\/p>\n

\"RENNtech<\/a><\/p>\n

\"RENNtech<\/a><\/p>\n

Source: RENNtech<\/a> via Autoblog<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

RENNtech is building 12 special V12-powered “SLEDGEHAMMER” vehicles at their company in Florida. The project starts with a Mercedes C126 SEC which will receive an upgraded M120 V12 with displacement increased to 7.5 liters. RENNtech rebuilds the motor with forged internals, ported heads, “advanced” intake system, and equal-length headers. They estimate the naturally aspirated V12… Read More »RENNtech is Building a Widebody Mercedes C126 with a 660 hp M120 V12<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":145027,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":100,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1332,972],"tags":[],"class_list":["post-145020","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-c126","category-w126"],"jetpack-related-posts":[{"id":104695,"url":"https:\/\/engineswapdepot.com\/?p=104695","url_meta":{"origin":145020,"position":0},"title":"1986 Mercedes 560SL with a 6.0 L V12","author":"swaptastic","date":"September 7, 2023","format":false,"excerpt":"John Roncallo owns a unique 1986 Mercedes 560SL (R107). The car originally came with a 5.5 L M117 V8 making 225 hp and four-speed automatic transmission. At some point the factory powertrain was swapped for one from a 1996 Mercedes SL600 (R129). 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