{"product_id":"edelbrock-cylinder-head-victor-jr-sbc-23-deg-220cc-complete-for-hydraulic-roller-cam","title":"Edelbrock Cylinder Head Victor Jr SBC 23 Deg 220cc Complete for Hydraulic Roller Cam 61255","description":"\u003cp\u003eEdelbrock Part # 61255 Victor Jr. 23° 220 cylinder heads are designed for small-block Chevy Its 64cc combustion chamber yields around 10:1 compression ratio in a typical flat-top application and about 12.5:1 when used with some of the most common 12cc dome pistons. One of the key features of the Victor Jr. 23° 220 cylinder heads is the CNC machined chambers and bowls, which result in consistency and improved performance. They also feature angled spark plug holes and maintain the stock 23° valve angle as well as the intake flange bolt pattern for use with 1986 and earlier intake manifolds. All of this allows these cylinder heads to deliver 530-580 hp potential right-out-of-the-box, making them ideal for a budget minded engine build desiring a high quality cylinder head that still uses a stud and guide plate rocker system.Cylinder Head Specifications: • Finish: Satin • Designed for use with Hydraulic Roller camshafts • Combustion chamber volume: 64cc • Intake runner volume: 220cc • Exhaust runner volume: 85cc • Intake valve diameter: 2.10\" • Exhaust valve diameter: 1.60\" • Valve stem diameter: 5\/16\" • Valve guides: Manganese bronze • Deck thickness: 11\/16\" • Valve spring diameter: 1.55\" • Valve spring maximum lift: .630\" • Rocker stud: 7\/16\" • Guide plate: Hardened steel • Pushrod diameter: 5\/16\" • Valve angle: 23° • Exhaust port location: Raised .300\" • Spark plug fitment: 14mm x .750 reach, gasket seat\n\u003cbr\u003eCyl Head Sbc 23 Deg Victor Jr 220Cc Complete For Hydraulic Roller Cam.\n\u003cbr\u003eEdelbrock E-Force Supercharger Stage 1 Street System part #1560 for 2007-10 Silverado and Sierra HD 2500 increases the performance of your 6.0L Gen IV engine to 424 horsepower and 431 ft\/lbs. of torque at the rear wheels.\n\u003cbr\u003eChevrolet:Small-Block Gen I:302 (4.9L)\/327 (5.4L)\/350 (5.7L)\/400 (6.6L)\u003c\/p\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":44584259223810,"sku":"ede61255","price":1514.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8981\/2226\/files\/0438512340966fb92fc1ad122b021952.jpg?v=1712462151","url":"https:\/\/billsperformance.com\/it\/products\/edelbrock-cylinder-head-victor-jr-sbc-23-deg-220cc-complete-for-hydraulic-roller-cam","provider":"Bills Performance","version":"1.0","type":"link"}