{"product_id":"edelbrock-performer-rpm-olds-400-455-head-77cc-hyd-roller-61025","title":"Edelbrock Performer RPM Cylinder Head — 1965-1976 Oldsmobile 400\/425\/455 | 218cc, 77cc Chamber, Hydraulic Roller | 61025","description":"\u003cp\u003eThe Edelbrock 61025 is a Performer RPM aluminum cylinder head for 1965-1976 Oldsmobile 400, 425 and 455 cubic inch big-block V8s. It has 218 cc intake runners, 77 cc combustion chambers, 2.150 in intake and 1.680 in exhaust valves, a 6 degree valve angle and 60 degree seats. It comes complete with valves, retainers and valve springs for hydraulic roller camshafts, rated to 0.600 in maximum lift, and has provision for a factory-style mechanical fuel pump. It supersedes Edelbrock head 60515. Sold as a single head.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHead bolt holes are drilled for stock 7\/16 in bolts and can be modified for 1\/2 in bolts or studs by drilling the 1\/2 in counterbore.\u003c\/li\u003e\n\u003cli\u003eRequires aftermarket 7\/16 in stud rocker arms and 3\/8 in hardened pushrods.\u003c\/li\u003e\n\u003cli\u003eFits 350-403 Oldsmobile engines only with Edelbrock intake manifold 7111, and port matching is required.\u003c\/li\u003e\n\u003cli\u003eDeck thickness: 5\/8 in. Spark plug: 14 mm x 3\/4 in reach, flat gasket seat (Champion RC12YC or equivalent).\u003c\/li\u003e\n\u003cli\u003eSold individually; order two for a V8.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Edelbrock\u003c\/li\u003e\n\u003cli\u003ePart Number: 61025\u003c\/li\u003e\n\u003cli\u003ePart Type: Engine Cylinder Head\u003c\/li\u003e\n\u003cli\u003eSeries: Performer RPM\u003c\/li\u003e\n\u003cli\u003eHorsepower: 450-600 HP\u003c\/li\u003e\n\u003cli\u003eIntake Valve Diameter: 2.150 in\u003c\/li\u003e\n\u003cli\u003eCamshaft Type: Hydraulic Roller\u003c\/li\u003e\n\u003cli\u003eGuide Plate Material: Hardened Steel\u003c\/li\u003e\n\u003cli\u003eSeat Angle: Exhaust 60 deg\/Intake 60 deg\u003c\/li\u003e\n\u003cli\u003eIntake Runner Volume: 218 cc\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminum\u003c\/li\u003e\n\u003cli\u003eValve Angle: 6 Degree\u003c\/li\u003e\n\u003cli\u003eValve Spring Maximum Lift: 0.600 in\u003c\/li\u003e\n\u003cli\u003eValve Spring Diameter: 1.105 in\u003c\/li\u003e\n\u003cli\u003eSeat Material: Ductile Iron\u003c\/li\u003e\n\u003cli\u003eRetainer Included: Yes\u003c\/li\u003e\n\u003cli\u003eValve Included: Yes\u003c\/li\u003e\n\u003cli\u003eExhaust Port Location: Standard\u003c\/li\u003e\n\u003cli\u003eExhaust Valve Diameter: 1.680 in\u003c\/li\u003e\n\u003cli\u003eValve Springs Included: Yes\u003c\/li\u003e\n\u003cli\u003eGuide Material: Manganese Bronze\u003c\/li\u003e\n\u003cli\u003eConstruction Type: Complete\u003c\/li\u003e\n\u003cli\u003eCombustion Chamber Volume: 77 cc\u003c\/li\u003e\n\u003cli\u003eEGR Port: No\u003c\/li\u003e\n\u003cli\u003eExhaust Runner Volume: 128 cc\u003c\/li\u003e\n\u003cli\u003eValve Stem Diameter: 0.3438\u003c\/li\u003e\n\u003cli\u003ePush Rod Diameter: (Suggested) 0.375\u003c\/li\u003e\n\u003cli\u003eDeck Thickness: 0.625 in\u003c\/li\u003e\n\u003cli\u003eGuide Plates Included: Yes\u003c\/li\u003e\n\u003cli\u003eCNC Ported: No\u003c\/li\u003e\n\u003cli\u003eRocker Arm Stud Diameter: 0.4375\u003c\/li\u003e\n\u003cli\u003eSold as: Each\u003c\/li\u003e\n\u003cli\u003eManufacturer warranty: 12 months\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEngine Applications\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOldsmobile Big-Block: 400 (6.6L), 425 (7.0L), 455 (7.5L)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eEmissions Status\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFor use on pre-pollution-controlled vehicles: 1965 and older U.S.-manufactured California-certified vehicles, 1967 and older U.S.-manufactured federally certified vehicles, and 1967 and older foreign-manufactured vehicles.\u003c\/li\u003e\n\u003cli\u003eFor engine swaps into uncontrolled or pre-pollution-controlled vehicles. Not legal for use on pollution-controlled vehicles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat engines does the Edelbrock 61025 fit?\u003c\/h5\u003e\u003cp\u003e1965-1976 Oldsmobile 400, 425 and 455 cubic inch big-block V8s.\u003c\/p\u003e\u003ch5\u003eWhat camshaft is the 61025 set up for?\u003c\/h5\u003e\u003cp\u003eIt is equipped with valve springs for hydraulic roller camshafts, with 0.600 in maximum valve lift.\u003c\/p\u003e\u003ch5\u003eWhat part does the 61025 replace?\u003c\/h5\u003e\u003cp\u003eIt supersedes the earlier Edelbrock Oldsmobile head 60515.\u003c\/p\u003e\u003ch5\u003eWhat rocker arms and pushrods does the 61025 need?\u003c\/h5\u003e\u003cp\u003eAftermarket 7\/16 in stud rocker arms and 3\/8 in hardened pushrods are required.\u003c\/p\u003e\u003ch5\u003eIs the Edelbrock 61025 street legal?\u003c\/h5\u003e\u003cp\u003eIt is not 50-state legal. Its emissions status is for pre-pollution-controlled vehicles and engine swaps into those vehicles.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What engines does the Edelbrock 61025 fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"1965-1976 Oldsmobile 400, 425 and 455 cubic inch big-block V8s.\"}}, {\"@type\": \"Question\", \"name\": \"What camshaft is the 61025 set up for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is equipped with valve springs for hydraulic roller camshafts, with 0.600 in maximum valve lift.\"}}, {\"@type\": \"Question\", \"name\": \"What part does the 61025 replace?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It supersedes the earlier Edelbrock Oldsmobile head 60515.\"}}, {\"@type\": \"Question\", \"name\": \"What rocker arms and pushrods does the 61025 need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Aftermarket 7\/16 in stud rocker arms and 3\/8 in hardened pushrods are required.\"}}, {\"@type\": \"Question\", \"name\": \"Is the Edelbrock 61025 street legal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is not 50-state legal. Its emissions status is for pre-pollution-controlled vehicles and engine swaps into those vehicles.\"}}]}\u003c\/script\u003e\u003cp\u003e\u003csmall\u003eCalifornia Proposition 65: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.\u003c\/small\u003e\u003c\/p\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":42575160672304,"sku":"BDVJ_61025","price":1403.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/e175a8882698b.jpg?v=1763647851","url":"https:\/\/berryperformancesales.com\/products\/edelbrock-performer-rpm-olds-400-455-head-77cc-hyd-roller-61025","provider":"Berry Performance Sales","version":"1.0","type":"link"}