{"product_id":"small-block-chevy-engines-302-400-engines-cylinder-heads-ede61209","title":"Performer RPM Bare Cylinder Head \u003cbr\u003e Small Block Chevy 302-400 (4.9-6.6L) Engines","description":"\u003cb\u003eDescription:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe Edelbrock part 61209 Small Block Chevy E-CNC 225 cylinder head offers the ultimate performance. This cylinder head is fully CNC ported for maximum horsepower and torque, making them ideal for high-performance's street and racing applications. They also feature high-quality lightweight valve springs and heavy duty hardware for maximum lift. E-CNC S\/B CHEVY FEATURES: - Features fully CNC machined intake ports, combustion chambers and exhaust ports for improved performance - Maintains the stock 23deg valve angle and intake flange bolt pattern for use with 1986 and earlier intake manifolds - Delivers up to 30-60 horsepower over Performer RPM cylinder head - 61205 \u0026amp; 61209 features 7\/16 studs and angled spark plugs - Ideal for high Performance's street and racing applications\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifics and Features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eCamshaft Type: Mechanical Roller\n\u003cli\u003eCNC Ported: Yes\u003c\/li\u003e\n\u003cli\u003eCombustion Chamber Volume: 64 CCM\u003c\/li\u003e\n\u003cli\u003eConstruction Type: Complete\u003c\/li\u003e\n\u003cli\u003eDeck Thickness: 0.5625 IN\u003c\/li\u003e\n\u003cli\u003eEGR Port: No\u003c\/li\u003e\n\u003cli\u003eExhaust Port Location: +.200\u003c\/li\u003e\n\u003cli\u003eExhaust Runner Volume: 88 CCM\u003c\/li\u003e\n\u003cli\u003eExhaust Valve Diameter: 1.60 IN\u003c\/li\u003e\n\u003cli\u003eFamily: E-CNC\u003c\/li\u003e\n\u003cli\u003eGuide Material: Manganese Bronze\u003c\/li\u003e\n\u003cli\u003eGuide Plate Material: Hardened Steel\u003c\/li\u003e\n\u003cli\u003eHorsepower: 500-600 HJ\u003c\/li\u003e\n\u003cli\u003eIntake Valve Diameter: 2.10 IN\u003c\/li\u003e\n\u003cli\u003ePush Rod Diameter: (Suggested) 0.3125 IN\u003c\/li\u003e\n\u003cli\u003eQuantity: Sold Individually\u003c\/li\u003e\n\u003cli\u003eRetainer Included: No\u003c\/li\u003e\n\u003cli\u003eRocker Arm Stud Diameter: 0.4375 IN\u003c\/li\u003e\n\u003cli\u003eRotor Center Bore Inside Diameter: angled\u003c\/li\u003e\n\u003cli\u003eSeat Angle: Exhaust 45 deg\/Intake 45 DD\u003c\/li\u003e\n\u003cli\u003eSeat Material: Ductile Iron\u003c\/li\u003e\n\u003cli\u003eSeries: E-CNC\u003c\/li\u003e\n\u003cli\u003eValve Angle: 23 DD\u003c\/li\u003e\n\u003cli\u003eValve Lock Material: Steel\u003c\/li\u003e\n\u003cli\u003eValve Spring Diameter: 1.58 IN\u003c\/li\u003e\n\u003cli\u003eValve Spring Maximum Lift: 0.700 IN\u003c\/li\u003e\n\u003cli\u003eValve Stem Diameter: 0.3110 IN\u003c\/li\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePackage Includes:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003cli\u003eEdelbrock SBC Cylinder Head\u003c\/li\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eCompatible With:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003cli\u003e1958-1975,1981 Chevrolet Bel Air\u003c\/li\u003e\n\u003cli\u003e1975-1984 Chevrolet K5 Blazer C10 C20 C30 G30 K10 K20 G10 G20\u003c\/li\u003e\n\u003cli\u003e1967-1984 Chevrolet C10 Suburban C20 Suburban Camaro K20 Suburban K10 Suburban\u003c\/li\u003e\n\u003cli\u003e1966-1984 Chevrolet Caprice\u003c\/li\u003e\n\u003cli\u003e1955-1982,1984 Chevrolet Corvette\u003c\/li\u003e\n\u003cli\u003e1958-1984 Chevrolet Impala\u003c\/li\u003e\n\u003cli\u003e1977-1984 Chevrolet K30\u003c\/li\u003e\n\u003cli\u003e1969-1979 Chevrolet Nova\u003c\/li\u003e\n\u003cli\u003e1958-1972 Chevrolet Biscayne\u003c\/li\u003e\n\u003cli\u003e1969-1974 Chevrolet Blazer\u003c\/li\u003e\n\u003cli\u003e1958-1961,1969-1972 Chevrolet Brookwood\u003c\/li\u003e\n\u003cli\u003e1960-1974 Chevrolet C10 Pickup K20 Pickup K10 Pickup C20 Pickup C30 Pickup\u003c\/li\u003e\n\u003cli\u003e1964-1973 Chevrolet Chevelle\u003c\/li\u003e\n\u003cli\u003e1963-1968 Chevrolet Chevy II\u003c\/li\u003e\n\u003cli\u003e1957-1958 Chevrolet Del Ray\u003c\/li\u003e\n\u003cli\u003e1959-1960,1964-1984 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1968-1974 Chevrolet K30 Pickup G10 Van\u003c\/li\u003e\n\u003cli\u003e1959-1961,1969-1972 Chevrolet Kingswood\u003c\/li\u003e\n\u003cli\u003e1970-1984 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1955,1957 Chevrolet One-Fifty Series\u003c\/li\u003e\n\u003cli\u003e1960-1966 Chevrolet Suburban\u003c\/li\u003e\n\u003cli\u003e1958-1961 Chevrolet Nomad\u003c\/li\u003e\n\u003cli\u003e1955-1958 Chevrolet Sedan Delivery\u003c\/li\u003e\n\u003cli\u003e1955-1958,1960 Chevrolet Truck\u003c\/li\u003e\n\u003cli\u003e1958 Chevrolet Yeoman\u003c\/li\u003e\n\u003cli\u003e1959 Chevrolet 3B 3C 3D 3E 3F 3G\u003c\/li\u003e\n\u003cli\u003e1959-1961 Chevrolet Parkwood\u003c\/li\u003e\n\u003cli\u003e1975,1978-1983 Chevrolet Malibu\u003c\/li\u003e\n\u003cli\u003e1969-1972 Chevrolet Townsman\u003c\/li\u003e\n\u003cli\u003e1955-1957 Chevrolet Two-Ten Series\u003c\/li\u003e\n\u003cli\u003e1967-1974 Chevrolet G20 Van\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet G30 Van\u003c\/li\u003e\n\u003cli\u003e1975-1979 Chevrolet Monza\u003c\/li\u003e\n\u003cli\u003e1967 Chevrolet K20 Panel\u003c\/li\u003e\n\u003cli\u003e1969-1970 Chevrolet Estate\u003c\/li\u003e\u003cbr\u003e\u003cbr\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":52773708792171,"sku":"EDE-61209","price":1684.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1961\/1987\/files\/EDE-61209-1.jpg?v=1768812968","url":"https:\/\/caautoparts.com\/products\/small-block-chevy-engines-302-400-engines-cylinder-heads-ede61209","provider":"CA Auto Parts","version":"1.0","type":"link"}