{"product_id":"moroso-72315","title":"Moroso 72315 Moroso 75-81 GM HEI Adjustable Vacuum Advance Kit","description":"\u003ch1\u003eMoroso 72315 Moroso 75-81 GM HEI Adjustable Vacuum Advance Kit\u003c\/h1\u003e\u003cp\u003eAdjustable Vacuum Advance Kit Fits: 1975-'81 GM HEI Distributors\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAllows you to change the amount of ignition vacuum advance for maximum part-throttle performance while preventing harmful effects of spark knock (detonation)\u003c\/li\u003e\n\u003cli\u003eDial in as much spark advance as conditions permit add more advance under light load conditions to improve throttle response and fuel economy, or limit spark advance in high compression engines and high load conditions to eliminate knock\u003c\/li\u003e\n\u003cli\u003eBuilt-in stop prevents the adjustment screw from \"backing out\" like other designs\u003c\/li\u003e\n\u003cli\u003ePerfect companion to Moroso HEI Advance Curve Kit No. 72300\u003c\/li\u003e\n\u003c\/ul\u003e \u003ca href=\"https:\/\/www.moroso.com\/pub\/media\/instructions\/72315_instweb.pdf\" target=\"_blank\"\u003eView Instructions\u003c\/a\u003e","brand":"Moroso","offers":[{"title":"Default Title","offer_id":46058811621534,"sku":"EN-72315","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7515\/5614\/files\/comingsoon_64f07634-d979-4455-8475-62a89c6cb358.png?v=1759983115","url":"https:\/\/pegasuspowersports.com\/products\/moroso-72315","provider":"Pegasus Powersports","version":"1.0","type":"link"}