{"id":473,"date":"2018-05-15T16:41:26","date_gmt":"2018-05-15T16:41:26","guid":{"rendered":"http:\/\/oldsrocketparts.com\/?post_type=product&#038;p=473"},"modified":"2026-05-13T22:41:36","modified_gmt":"2026-05-13T22:41:36","slug":"69cc-403-oldsmobile-complete-aluminum-heads","status":"publish","type":"product","link":"https:\/\/oldsrocketparts.com\/index.php\/product\/69cc-403-oldsmobile-complete-aluminum-heads\/","title":{"rendered":"69CC 403 OLDSMOBILE COMPLETE ALUMINUM HEADS"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<h3><em><strong>This ad is for a pair of\u00a0 complete assembled 69CC aluminum Oldsmobile cylinder heads for 403 AND LATE 350 engines.THEY COME READY BOLT ON DRILLED FOR 1\/2 HEAD BOLTS . NO COMPANY DOES THAT<\/strong> These<strong> are cast from virgin A356 aluminum and are heat treated to T6 specs. They are manufactured using their gravity casting process, which ensures a more uniform and robust casting. This provides a strong platform for you to build on. They are designed for high performance, are non-emission, 1965-1976 Oldsmobile 350-403, 400, 425 and 455 c.i.d. V\u20198s. The valve train has been upgraded from the factory pedestal mount system to a 7\/16\u201d screw-in stud and a 3\/8\u201d pushrod slot guide plate for increased valve train stability.<\/strong><strong>This complete assembled pair of heads includes the following premium ProComp components: ProComp 2.075, 1-piece stainless steel intake valves and ProComp 1.680, 1-piece stainless exhaust valves, 1.460 o.d. dual valve springs, which are 130-135 lbs. on the seat &amp; 320 lbs. open @.600 lift with Chromolly 10 degree retainers, 10 degree machined valve locks, &amp; over the guide stationary valve seals with heat treated valve spring shims<\/strong><\/em><\/h3>\n","protected":false},"featured_media":448,"comment_status":"open","ping_status":"closed","template":"","meta":{"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"product_brand":[],"product_cat":[18],"product_tag":[],"class_list":{"0":"post-473","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-oldsmobile-aluminum-heads","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/product\/473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/comments?post=473"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/media\/448"}],"wp:attachment":[{"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/media?parent=473"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=473"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=473"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/oldsrocketparts.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}