{"product_id":"seat-spacer-bbc-exhaust-300in-thickness","title":"Seats BBC 1.568\" OD .623\" ID .300\" Thick","description":"\u003cp\u003e\u003cb\u003ePart #:\u003c\/b\u003e 4779-8\u003c\/p\u003e\u003cp\u003eThe old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines. COMP Cams offers a simple but effective solution to this problem. These Valve Spring Locators provide a thin, hardened Steel alloy seat that will not only protect the head and shim, but also locate and hold the spring in place. Previously, this part has been available only in a cup form with the retaining portion being on the outside of the part. This required that the head be machined a great deal to accept this cup so COMP now offers an ID locator with the locating shoulder on the inside, as well as the spring cup.\u003c\/p\u003e\u003cp\u003eAvoid stacking .300\" of shims under the valve springs on your Big Block Chevrolet with our seat spacers. These spacers feature a 1.732\" outer diameter for 1.568\" outer diameter springs.\u003c\/p\u003e\u003cp\u003eThis product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.\u003c\/p\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":51783891157304,"sku":"C007 4779-8","price":88.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/horsepower-asset-427236-4782335-square_139d99e6-6342-4b91-9c0c-8f69797c9a2a.webp?v=1774557821","url":"https:\/\/store.motormia.co\/products\/seat-spacer-bbc-exhaust-300in-thickness","provider":"MOTORMIA","version":"1.0","type":"link"}