{"id":139053,"date":"2025-10-03T16:57:43","date_gmt":"2025-10-03T21:57:43","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=139053"},"modified":"2025-10-03T16:57:43","modified_gmt":"2025-10-03T21:57:43","slug":"1969-mustang-boss-with-a-598-ci-kaase-v8","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=139053","title":{"rendered":"1969 Mustang Boss with a 598 ci Kaase V8"},"content":{"rendered":"

\"1969<\/a><\/p>\n

This 1969 Ford Mustang Boss 429 is powered by a monster 598 ci (9.7L) V8 from Kaase Racing Engines<\/a>. The monster motor produces 1062 hp (781 kW) and 830 lb-ft (1125 Nm) of torque thanks to its 15:1 compression ratio and a Get\u2019M Garage 1650 cfm carburetor delivering plenty of fuel. Behind the V8 is a McLeod twin-disc clutch and four-speed manual transmission. A carbon fiber driveshaft sends all the torque to a Traction-Lock differential with 4.11 ratio and 35-spline alxes. The car rides on Calvert Racing leaf springs and Magnum 500-style 15-inch wheels with Cooper tires in front and Mickey Thompson drag radials in back. The unique Mustang can be found for sale on Bring a Trailer<\/a>. <\/p>\n

\"1969<\/a><\/p>\n

\"1969<\/a><\/p>\n

\"1969<\/a><\/p>\n

\"1969<\/a><\/p>\n

\"1969<\/a><\/p>\n

\"1969<\/a><\/p>\n

\"1969<\/a><\/p>\n

\"1969<\/a><\/p>\n

Source: Bring a Trailer<\/a> via Felix<\/p>\n","protected":false},"excerpt":{"rendered":"

This 1969 Ford Mustang Boss 429 is powered by a monster 598 ci (9.7L) V8 from Kaase Racing Engines. The monster motor produces 1062 hp (781 kW) and 830 lb-ft (1125 Nm) of torque thanks to its 15:1 compression ratio and a Get\u2019M Garage 1650 cfm carburetor delivering plenty of fuel. Behind the V8 is… Read More »1969 Mustang Boss with a 598 ci Kaase V8<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":139058,"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":70,"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,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[46],"tags":[],"class_list":["post-139053","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mustang"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/1969-Mustang-Boss-429-with-a-598-ci-Kaase-V8-01.jpg?fit=2048%2C1365&ssl=1","jetpack-related-posts":[{"id":84866,"url":"https:\/\/engineswapdepot.com\/?p=84866","url_meta":{"origin":139053,"position":0},"title":"1969 Mustang with a 520 ci Jon Kaase V8","author":"swaptastic","date":"April 14, 2022","format":false,"excerpt":"Pure Vision built this 1969 Mustang at their company in Simi Valley, California. The car is powered by a 520 ci Boss Nine V8 built by Jon Kaase Racing Engines. The all-aluminum big-block produces 805 horsepower and features a Dart block, forged crank and rods, and Aviaid dry sump system.\u2026","rel":"","context":"In "Mustang"","block_context":{"text":"Mustang","link":"https:\/\/engineswapdepot.com\/?cat=46"},"img":{"alt_text":"1969 Mustang with a Jon Kaase Boss Nine V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/04\/1969-Mustang-with-a-Jon-Kaase-Boss-Nine-V8-01.jpg?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/04\/1969-Mustang-with-a-Jon-Kaase-Boss-Nine-V8-01.jpg?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/04\/1969-Mustang-with-a-Jon-Kaase-Boss-Nine-V8-01.jpg?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/04\/1969-Mustang-with-a-Jon-Kaase-Boss-Nine-V8-01.jpg?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/04\/1969-Mustang-with-a-Jon-Kaase-Boss-Nine-V8-01.jpg?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":48345,"url":"https:\/\/engineswapdepot.com\/?p=48345","url_meta":{"origin":139053,"position":1},"title":"1969 Mustang Mach 1 with a 520 ci Big-Block V8","author":"swaptastic","date":"November 8, 2019","format":false,"excerpt":"This 1969 Mustang Mach 1 called \"UNKL\" was built by the Ringbrothers in Spring Green, Wisconsin. The car's heart is a 520 ci Boss Nine V8 built by Jon Kaase Racing Engines making 700 horsepower. Behind the V8 sits a Bowler six-speed manual transmission, QA1 carbon fiber driveshaft, and John's\u2026","rel":"","context":"In "Mustang"","block_context":{"text":"Mustang","link":"https:\/\/engineswapdepot.com\/?cat=46"},"img":{"alt_text":"1969 Mustang Mach 1 with a 520 ci Kaase Big-Block V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/1969-Mustang-Mach-1-with-a-520-ci-Kaase-Big-Block-V8-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/1969-Mustang-Mach-1-with-a-520-ci-Kaase-Big-Block-V8-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/1969-Mustang-Mach-1-with-a-520-ci-Kaase-Big-Block-V8-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/1969-Mustang-Mach-1-with-a-520-ci-Kaase-Big-Block-V8-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/1969-Mustang-Mach-1-with-a-520-ci-Kaase-Big-Block-V8-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":66063,"url":"https:\/\/engineswapdepot.com\/?p=66063","url_meta":{"origin":139053,"position":2},"title":"1967 Mustang with a Jon Kaase 527 V8","author":"swaptastic","date":"January 11, 2021","format":false,"excerpt":"This 1967 Mustang called \"RK527\" was built by Darell Johnston and Richard Gauthier at RK Motors to celebrate the 50th anniversary of the Mustang in 2014. The car is powered by a 527 ci Boss Nine V8 built by Jon Kaase Racing Engines. The all-aluminum motor produces 806 horsepower and\u2026","rel":"","context":"In "Mustang"","block_context":{"text":"Mustang","link":"https:\/\/engineswapdepot.com\/?cat=46"},"img":{"alt_text":"1967 Mustang with a Jon Kaase 527 ci Boss Nine V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/01\/1967-Mustang-with-a-Jon-Kaase-527-ci-Boss-Nine-V8-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/01\/1967-Mustang-with-a-Jon-Kaase-527-ci-Boss-Nine-V8-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/01\/1967-Mustang-with-a-Jon-Kaase-527-ci-Boss-Nine-V8-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/01\/1967-Mustang-with-a-Jon-Kaase-527-ci-Boss-Nine-V8-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/01\/1967-Mustang-with-a-Jon-Kaase-527-ci-Boss-Nine-V8-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":103173,"url":"https:\/\/engineswapdepot.com\/?p=103173","url_meta":{"origin":139053,"position":3},"title":"1969 Mustang with a Jon Kaase 521 ci V8","author":"swaptastic","date":"July 26, 2023","format":false,"excerpt":"Sic Chops built this 1969 Mustang at their company in Cave Creek, Arizona. It is powered by a Jon Kaase 521 ci V8 making 851 hp and 723 lb-ft of torque. The motor features SVO block, Diamond ford pistons, Lunati h-beam rods, Comp hydraulic roller camshaft, Boss Nine aluminum heads,\u2026","rel":"","context":"In "Mustang"","block_context":{"text":"Mustang","link":"https:\/\/engineswapdepot.com\/?cat=46"},"img":{"alt_text":"1969 Mustang with a Jon Kaase 521 ci V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/07\/1969-Mustang-with-a-Jon-Kaase-521-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/07\/1969-Mustang-with-a-Jon-Kaase-521-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/07\/1969-Mustang-with-a-Jon-Kaase-521-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/07\/1969-Mustang-with-a-Jon-Kaase-521-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/07\/1969-Mustang-with-a-Jon-Kaase-521-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":97522,"url":"https:\/\/engineswapdepot.com\/?p=97522","url_meta":{"origin":139053,"position":4},"title":"1968 Mustang with a Boss 520 ci V8","author":"swaptastic","date":"March 24, 2023","format":false,"excerpt":"This 1968 Mustang was built by Michels Auto Design in Pewaukee, Wisconsin. Sitting in the engine bay is Jon Kaase 520 ci Boss V8 making 850 horsepower. The big-block is paired with a TKO 600 five-speed manual transmission and independent 9-inch rear end with a Currie third member. Michels Auto\u2026","rel":"","context":"In "Mustang"","block_context":{"text":"Mustang","link":"https:\/\/engineswapdepot.com\/?cat=46"},"img":{"alt_text":"1968 Mustang with a Boss 520 ci V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/03\/1968-Mustang-with-a-Boss-520-ci-V8-01.jpg?fit=1200%2C780&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/03\/1968-Mustang-with-a-Boss-520-ci-V8-01.jpg?fit=1200%2C780&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/03\/1968-Mustang-with-a-Boss-520-ci-V8-01.jpg?fit=1200%2C780&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/03\/1968-Mustang-with-a-Boss-520-ci-V8-01.jpg?fit=1200%2C780&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/03\/1968-Mustang-with-a-Boss-520-ci-V8-01.jpg?fit=1200%2C780&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":79719,"url":"https:\/\/engineswapdepot.com\/?p=79719","url_meta":{"origin":139053,"position":5},"title":"1969 Mustang with a 427 ci V8","author":"swaptastic","date":"November 26, 2021","format":false,"excerpt":"The owner of this restored 1969 Mustang tasked Prestige Motorsports in Concord, North Carolina with upgrading the motor. They achieved this with one of their all-aluminum 427 ci small-block V8 making 559 horsepower and 542 lb-ft of torque. The motor features a Dart block, Borla 50 mm 8-stack throttle bodies,\u2026","rel":"","context":"In "Mustang"","block_context":{"text":"Mustang","link":"https:\/\/engineswapdepot.com\/?cat=46"},"img":{"alt_text":"1969 Mustang with a 427 ci V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/1969-Mustang-with-a-427-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/1969-Mustang-with-a-427-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/1969-Mustang-with-a-427-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/1969-Mustang-with-a-427-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/1969-Mustang-with-a-427-ci-V8-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/139053","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=139053"}],"version-history":[{"count":5,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/139053\/revisions"}],"predecessor-version":[{"id":139067,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/139053\/revisions\/139067"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/media\/139058"}],"wp:attachment":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=139053"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=139053"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=139053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}