{"product_id":"manley-chevrolet-small-block-exhaust-valves","title":"Manley Race Series Exhaust Valves – Chevrolet Small Block","description":"\u003cp\u003eThis Manley Race Series exhaust valve family is intended for Chevrolet Small Block builds where valve dimensions need to be matched deliberately to the cylinder head, seat work, and valvetrain geometry. The selectable configurations in this family are separated by head diameter, overall length, stem diameter, so the final SKU should be chosen from the dimensional requirements of the build.\u003c\/p\u003e\u003cp\u003eIf the Chevrolet Small Block cylinder head has been ported, fitted with oversized seats, or changed from its original valvetrain layout, confirm the required valve measurements after machining rather than using a stock-size assumption.\u003c\/p\u003e\u003ch3\u003eKey Product Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Chevrolet Small Block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManley Series:\u003c\/strong\u003e Race Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Position:\u003c\/strong\u003e Exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family Detail:\u003c\/strong\u003e Severe Duty application focus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family Detail:\u003c\/strong\u003e Race Series application focus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Numbers:\u003c\/strong\u003e Vary by selected configuration (21 SKUs in this parent family)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Configurations\u003c\/h3\u003e\u003cp\u003eThis parent listing contains multiple selectable Manley SKUs. Choose the configuration that matches the measured engine or cylinder-head specification.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter:\u003c\/strong\u003e 1.600in, 1.500in, 1.625in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 14 selectable values (including 5.050in, 5.036in, 5.021in, 5.121in, 5.565in, 5.015in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStem Diameter:\u003c\/strong\u003e 0.3136in, 0.3415in, 0.3110in, 0.2740in\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Quantity\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSet of 8 valves.\u003c\/strong\u003e The selected configuration is supplied as a 8-piece valve package. This quantity applies to the selected Manley SKU family shown on this product page.\u003c\/p\u003e\u003ch3\u003eSelection \u0026amp; Fitment Notes\u003c\/h3\u003e\u003cp\u003eBefore purchase, compare the selected valve dimensions with your head manufacturer or engine builder’s specification, including stem diameter, valve length, seat diameter, and keeper arrangement.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProfessional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.\u003c\/em\u003e\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"1.600in \/ 5.050in \/ 0.3136in","offer_id":50206923882746,"sku":"MAN12303-8","price":202.55,"currency_code":"USD","in_stock":true},{"title":"1.500in \/ 5.036in \/ 0.3415in","offer_id":50206923915514,"sku":"MAN11887-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 5.021in \/ 0.3415in","offer_id":50206923948282,"sku":"MAN11869-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 5.121in \/ 0.3415in","offer_id":50206923981050,"sku":"MAN11865-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 5.565in \/ 0.3415in","offer_id":50206924013818,"sku":"MAN11767-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 5.015in \/ 0.3415in","offer_id":50206924046586,"sku":"MAN11599-8","price":514.08,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 4.936in \/ 0.3415in","offer_id":50206924079354,"sku":"MAN11585-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 5.221in \/ 0.3415in","offer_id":50206924112122,"sku":"MAN11579-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 4.965in \/ 0.3415in","offer_id":50206924144890,"sku":"MAN11573-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 5.021in \/ 0.3415in","offer_id":50206924177658,"sku":"MAN11569-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 4.911in \/ 0.3415in","offer_id":50206924210426,"sku":"MAN11541-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 5.036in \/ 0.3415in","offer_id":50206924243194,"sku":"MAN11539-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 5.036in \/ 0.3415in","offer_id":50206924275962,"sku":"MAN11537-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 5.465in \/ 0.3415in","offer_id":50206924308730,"sku":"MAN11511-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 5.540in \/ 0.3110in","offer_id":50206924341498,"sku":"MAN11397-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 4.965in \/ 0.3415in","offer_id":50206924374266,"sku":"MAN11329-8","price":188.69,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 5.040in \/ 0.3110in","offer_id":50206924407034,"sku":"MAN11305-8","price":202.55,"currency_code":"USD","in_stock":true},{"title":"1.625in \/ 5.040in \/ 0.3110in","offer_id":50206924439802,"sku":"MAN11303-8","price":202.55,"currency_code":"USD","in_stock":true},{"title":"1.500in \/ 5.065in \/ 0.3415in","offer_id":50206924472570,"sku":"MAN11301-8","price":188.69,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 5.040in \/ 0.2740in","offer_id":50206924505338,"sku":"MAN11235-8","price":301.07,"currency_code":"USD","in_stock":true},{"title":"1.600in \/ 4.911in \/ 0.3415in","offer_id":50206924538106,"sku":"MAN10749-8","price":138.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/c6ccd65ebfd1e956c2aff76b8661b6a9L_a67ba2cc-c07e-4512-bc12-632e022a0005.jpg?v=1787979012","url":"https:\/\/lgcracing.com\/products\/manley-chevrolet-small-block-exhaust-valves","provider":"Legacy Racing","version":"1.0","type":"link"}