{"product_id":"manley-434212-16","title":"Manley 434212-16 - 58-81 Pontiac 287-455 1.65in x 7\/16in Aluminum Roller Rocker Arm Kit","description":"\u003cp\u003eManley 434212-16 - 58-81 Pontiac 287-455 1.65in x 7\/16in Aluminum Roller Rocker Arm Kit\u003c\/p\u003e\u003cp\u003eManley Aluminum Rocker Arm Kit-PONT 287-455 \u0026amp; 4.3L V8 1958-81, 1.65 x 7\/16\"\u003c\/p\u003e\u003cp\u003eRatio: 1.65 - Stud: 7\/16 in. - Fits: 1958-1981 Pontiac V8 (287-455 and 4.3L)\u003c\/p\u003e\u003cp\u003eOur all-new Pro Series Billet Aluminum Rocker Arms are engineered for top performance across street, strip, and track applications. Machined from high-quality 2024 billet aluminum extrusions, these rockers feature precision-ground needle and cage bearings, reducing friction with full complement needle bearings. With the heat-treated and polished steel nose rollers, axles, and trunions, wear is minimized for lasting durability. An anodized finish enhances protection, and each 16-piece set comes complete with Poly Locks for secure installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCNC-Machined from 2024 Billet Aluminum\u003c\/li\u003e\n\u003cli\u003eAnodized Finish for Increased Durability Under Extreme Heat Conditions\u003c\/li\u003e\n\u003cli\u003eShot-Peened to Increase Strength \u0026amp; Reduce Stress Risers\u003c\/li\u003e\n\u003cli\u003eHeat-treated and Polished Steel Axles Have a 60-62 Rockwell Hardness\u003c\/li\u003e\n\u003cli\u003eRated at 750lbs Open Spring Pressure\u003c\/li\u003e\n\u003cli\u003eMultiple Oil Channels for Pushrod and Valve Tip Lubrication\u003c\/li\u003e\n\u003cli\u003ePoly Locks Included for Secure Installation\u003c\/li\u003e\n\u003cli\u003eSmall Block Chevy Rockers Clear 1.625 O.D. Valve Springs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley","offers":[{"title":"Default Title","offer_id":47344767598730,"sku":"BBPB-434212-16","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/0619\/2778\/files\/0_manley_434212-16_ang45_p04_normalized.jpg?v=1777512282","url":"https:\/\/www.onlyinstock.com\/products\/manley-434212-16","provider":"Only In Stock","version":"1.0","type":"link"}