{"id":212104,"date":"2016-04-24T23:03:22","date_gmt":"2016-04-24T23:03:22","guid":{"rendered":"http:\/\/blog.supercars.net\/blog\/?p=212104"},"modified":"2024-12-27T12:57:43","modified_gmt":"2024-12-27T12:57:43","slug":"1963-pontiac-tempest-coupe-421-super-duty","status":"publish","type":"post","link":"https:\/\/www.supercars.net\/blog\/1963-pontiac-tempest-coupe-421-super-duty\/","title":{"rendered":"1963 Pontiac Tempest Coupe 421 Super Duty"},"content":{"rendered":"<h1 class=\"copy-paste-block\">1963 Pontiac Tempest Coupe 421 Super Duty<\/h1>\n<div class=\"copy-paste-block\">\n<p><span id=\"intelliTXT\">Long known as the preferred brand of the senior set, Pontiac roared out of nowhere at the turn of the Sixties to claim multiple Super Stock championships. It kept the competition back on its heels with a flurry of new over-the-counter parts before finally introducing a radical new performance package that was more than the typical recipe of cubic inches, midsize body and deleted creature comforts.<\/span><\/p>\n<p>Pontiac engineers had decided not only to up the horsepower ante, but to address the major problem facing their drag-racing customers: traction. The new Super Duty Tempest\/Le Mans Coupes, like the SD Tempest station wagons, used a rear-mounted transaxle for better weight distribution, improving the car\u2019s launch. Heavy-duty internals were packed into new, stronger cases, creating the unique and durable \u201cPowershift\u201d four-speed transaxle. A robust mechanical clutch could be used to replace the torque converter, adding to starting-line response.<\/p>\n<p>The factory took further steps to improve the car\u2019s performance, punching its 389 V-8 out to 421 cubic inches. Its twin 4-barrel carbs and free-flowing aluminum exhaust headers pushed power up to a potential 500 horses, and lightweight aluminum front sheetmetal and bumpers shaved considerable weight.<\/p>\n<h4>Chassis &amp; Sales<\/h4>\n<p>The Wynn Engineering Tempest presented here is one of the original six 421 Super Duty Coupes built by Pontiac. Four were destroyed and a fifth was recently found minus almost all the distinguishing special factory equipment, making this car the only complete example in existence. Along with the Union Park SD station wagon, it has been a central piece of Dana Mecum\u2019s collection of rare Pontiac factory racers.<\/p>\n<p>It was sold at Dana Mecum&#8217;s 2010 Original Spring Classic Auction for $455,000 USD.<\/p>\n<p>Story by Mecum Inc.<\/p>\n<figure class='gallery-item'>\r\n            <div class='gallery-icon landscape'>\r\n                <a href='https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2.jpg' class='tipi-lightbox'>\r\n\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"680\" src=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2.jpg\" class=\"attachment-full size-full\" alt=\"1963 Pontiac Tempest Coupe 421 Super Duty\" srcset=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2.jpg 1024w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2-300x199.jpg 300w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2-100x66.jpg 100w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2-770x511.jpg 770w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2-360x240.jpg 360w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2-370x247.jpg 370w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty2-293x195.jpg 293w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\r\n\t\t\t\t<\/a>\r\n            <\/div><\/figure><figure class='gallery-item'>\r\n            <div class='gallery-icon landscape'>\r\n                <a href='https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3.jpg' class='tipi-lightbox'>\r\n\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"680\" src=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3.jpg\" class=\"attachment-full size-full\" alt=\"1963 Pontiac Tempest Coupe 421 Super Duty\" srcset=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3.jpg 1024w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3-300x199.jpg 300w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3-100x66.jpg 100w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3-770x511.jpg 770w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3-360x240.jpg 360w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3-370x247.jpg 370w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty3-293x195.jpg 293w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\r\n\t\t\t\t<\/a>\r\n            <\/div><\/figure><figure class='gallery-item'>\r\n            <div class='gallery-icon landscape'>\r\n                <a href='https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty4.jpg' class='tipi-lightbox'>\r\n\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"679\" src=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty4.jpg\" class=\"attachment-full size-full\" alt=\"1963 Pontiac Tempest Coupe 421 Super Duty\" srcset=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty4.jpg 1024w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty4-300x199.jpg 300w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty4-100x66.jpg 100w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty4-770x511.jpg 770w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty4-360x240.jpg 360w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty4-293x194.jpg 293w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\r\n\t\t\t\t<\/a>\r\n            <\/div><\/figure><figure class='gallery-item'>\r\n            <div class='gallery-icon landscape'>\r\n                <a href='https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8.jpg' class='tipi-lightbox'>\r\n\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"680\" src=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8.jpg\" class=\"attachment-full size-full\" alt=\"1963 Pontiac Tempest Coupe 421 Super Duty\" srcset=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8.jpg 1024w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8-300x199.jpg 300w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8-100x66.jpg 100w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8-770x511.jpg 770w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8-360x240.jpg 360w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8-370x247.jpg 370w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty8-293x195.jpg 293w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\r\n\t\t\t\t<\/a>\r\n            <\/div><\/figure><figure class='gallery-item'>\r\n            <div class='gallery-icon landscape'>\r\n                <a href='https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1.jpg' class='tipi-lightbox'>\r\n\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"680\" src=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1.jpg\" class=\"attachment-full size-full\" alt=\"1963 Pontiac Tempest Coupe 421 Super Duty\" srcset=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1.jpg 1024w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1-300x199.jpg 300w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1-100x66.jpg 100w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1-770x511.jpg 770w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1-360x240.jpg 360w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1-370x247.jpg 370w, https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1-293x195.jpg 293w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\r\n\t\t\t\t<\/a>\r\n            <\/div><\/figure>\n<div class=\"copy-paste-block\">\n<h3>In Detail<\/h3>\n<table class=\"cardetails\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\"><\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\"><\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">type<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">Racing Car<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">built at<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">USA<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">production<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">6<\/td>\n<\/tr>\n<tr>\n<td class=\"boldlabel\" align=\"left\" valign=\"bottom\" width=\"30%\">engine<\/td>\n<td class=\"boldvalue\" align=\"right\" valign=\"bottom\" width=\"70%\">Super Duty 90\u00ba V8<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">position<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">Front, Longitudinal<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">aspiration<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">Natural<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">valvetrain<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">Pushrod OHV<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">fuel feed<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">Dual Carter Carburetors w\/Bathtub Ram Intake<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">displacement<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">6899 cc \/ 421 in\u00b3<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">compression<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">12.0:1<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">power<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">302.0 kw \/ 405 bhp @ 5600 rpm<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">specific output<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">58.7 bhp per litre<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">bhp\/weight<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">269.64 bhp per tonne<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">torque<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">576.2 nm \/ 425 ft lbs @ 4400 rpm<\/td>\n<\/tr>\n<tr>\n<td class=\"boldlabel\" align=\"left\" valign=\"bottom\" width=\"30%\">body \/ frame<\/td>\n<td class=\"boldvalue\" align=\"right\" valign=\"bottom\" width=\"70%\">Steel Body w\/Aluminum Fenders &amp; Hood over Pressed Steel Chassis<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">driven wheels<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">RWD<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">curb weight<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">1502 kg \/ 3308 lbs<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">transmission<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">T-85 3-Speed Transmission<\/td>\n<\/tr>\n<tr>\n<td class=\"label\" align=\"left\" valign=\"bottom\" width=\"30%\">final drive<\/td>\n<td class=\"value\" align=\"right\" valign=\"bottom\" width=\"70%\">4.30:1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1963 Pontiac Tempest Coupe 421 Super Duty Long known as the preferred brand of the senior set, Pontiac roared out of nowhere at the turn of the Sixties to claim multiple Super Stock championships. It kept the competition back on its heels with a flurry of new over-the-counter parts before finally introducing a radical new performance package that was more than the typical recipe of cubic inches, midsize body and deleted creature comforts. Pontiac engineers had decided not only to [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":212115,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2186,9348,17100,1416],"tags":[2727,16843,13061,6722,1417,6490,20388,20398,2011,245],"class_list":["post-212104","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1960s","category-guides","category-model-guides-race-cars","category-pontiac","tag-1960s","tag-1960s-cars","tag-car-profiles","tag-race-car-in-depth","tag-pontiac","tag-pontiac-model-in-depth","tag-pontiac-model-guides-race-cars","tag-pontiac-model-guides-tempest","tag-pontiac-tempest","tag-race-car"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>1963 Pontiac Tempest Coupe 421 Super Duty<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.supercars.net\/blog\/1963-pontiac-tempest-coupe-421-super-duty\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"1963 Pontiac Tempest Coupe 421 Super Duty\" \/>\n<meta property=\"og:description\" content=\"1963 Pontiac Tempest Coupe 421 Super Duty Long known as the preferred brand of the senior set, Pontiac roared out of nowhere at the turn of the Sixties to claim multiple Super Stock championships. It kept the competition back on its heels with a flurry of new over-the-counter parts before finally introducing a radical new performance package that was more than the typical recipe of cubic inches, midsize body and deleted creature comforts. Pontiac engineers had decided not only to [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.supercars.net\/blog\/1963-pontiac-tempest-coupe-421-super-duty\/\" \/>\n<meta property=\"og:site_name\" content=\"Supercars.net\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Supercars.net\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/Supercars.net\/\" \/>\n<meta property=\"article:published_time\" content=\"2016-04-24T23:03:22+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-27T12:57:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.supercars.net\/blog\/wp-content\/uploads\/2016\/04\/1963_Pontiac_TempestCoupe421SuperDuty1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"680\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Editorial Team\" \/>\n<meta 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