{"product_id":"edelbrock-performer-rpm-chevy-454-head-290cc-runner-100cc-chamber-60435","title":"Edelbrock Performer RPM Chevy 454 Head, 290cc Runner, 100cc Chamber 60435","description":"\u003cp\u003e\u003cspan class=\"description\"\u003eCylinder Head; Performer RPM; Assembled; Chevy 7.4L\/454 Cubic Inch Engine; Aluminum; 290 CC Intake Port\/ 110 CC Exhaust Port; 100 CC Chamber Volume; 2.19 Inch Intake Valve\/ 1.88 Inch Exhaust Valve; 1.55 Inch Spring Diameter; Single; With Guides\/ Seats\/ Springs For Hydraulic Roller Cam; Not For Sale Or Use On Pollution Controlled Vehicles\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"detail-p65-warning\"\u003e\n\u003cspan class=\"restriction-icon restriction-p65\"\u003e\u003cimg src=\"https:\/\/wwwsc.ekeystone.com\/-\/media\/Project\/KAO\/eKeystone\/Prop65\/prop65.gif\" title=\"Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and\/or birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov.\" alt=\"Restriction Icon\"\u003e\u003c\/span\u003eProp 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and\/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.\u003c\/div\u003e\n\u003cdiv class=\"detail-p65-warning\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"detail-p65-warning\"\u003e\n\u003cdiv class=\"component kaoxa-product-detail-description col-12 indent-bottom\"\u003e\n\u003cdiv class=\"component-content\"\u003e\n\u003cdiv class=\"tabbable populated\"\u003e\n\u003cdiv class=\"product-detail-description\"\u003eThese new cylinder heads are our latest addition to our popular Performer RPM 454-O cylinder heads for big block Chevy's with oval ports. These cylinder heads feature a 100 Cubic Centimeter chamber that is ideal for high compression applications. The unique oval intake port shape produces flow similar to rectangular ports, but the smaller port size provides excellent seat of the pants performance and crisp throttle response. Both the intake and exhaust ports have been profiled for improved air flow. They also have smaller than stock 11\/32 Inch valve stems for excellent flow and a lighter weight valve. The heat crossover passage is present, but has been blocked, making these heads not legal for use on emissions controlled engines.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"component kaoxa-product-detail-features col-12\"\u003e\n\u003cdiv class=\"component-content\"\u003e\n\u003cdiv class=\"tabbable populated\"\u003e\n\u003cdiv class=\"product-detail-features\"\u003e\n\u003ch1\u003eFeatures \u0026amp; Benefits\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli class=\"feature\"\u003e100 Cubic Centimeter Semi-Open Chamber Heads Feature A 1-1\/2 Degree Rolled Over (Angle Milled) Design\u003c\/li\u003e\n\u003cli class=\"feature\"\u003eImproves Intake Port Alignment And Provides A Smaller Combustion Chamber Without Shrouding The Valves\u003c\/li\u003e\n\u003cli class=\"feature\"\u003e9.2:1 Compression With Flat Top Pistons For An Outstanding High Performance Street Head\u003c\/li\u003e\n\u003cli class=\"feature\"\u003ePerformer Applications Include Heat Crossover Passage For Emissions Related Engines\u003c\/li\u003e\n\u003cli class=\"feature\"\u003eLimited 1 Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eAttributes\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eCondition: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eNew\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eEngine Compatibility: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eChevy Big Block V8 7.4L 454 Cubic Inch\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eStyle: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eAssembled\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eFinish: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eSatin\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eMaterial: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eAluminum\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eCNC-Machined: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eCombustion Chamber Volume (cc): \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e100 Cubic Centimeter\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIntake Runner Volume (CC): \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e290 Cubic Centimeter\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eExhaust Runner Volume (CC): \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e110 Cubic Centimeter\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003ePort Shape: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eOval\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIntake Port Location: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eStandard\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eExhaust Port Location: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eStandard\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIntake Valve Diameter (IN): \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e2.19 Inch\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eExhaust Valve Diameter (IN): \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e1.88 Inch\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIncludes Valves: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eSpark Plug Angle: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eStraight\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eRocker Arm Nut Thread Size: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e3\/8 Inch\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIncludes Rocker Arm Studs: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eValve Guide Material: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eManganese Bronze\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eNumber Of Springs Per Valve: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003e1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eValve Seats Machined: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"attribute-name\"\u003eIncludes Guideplates: \u003c\/span\u003e\u003cspan class=\"attribute-value\"\u003eYes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-3\"\u003eEDELBROCK\u003c\/div\u003e\n\u003cdiv class=\"col-1\"\u003eE11\u003c\/div\u003e\n\u003cdiv class=\"col-lg\"\u003eCams, Carburetors, Chrome Acc., Engine Sys., Exhaust Sys., Headers, Heads, Injection, Manifolds, Mufflers, Shocks, Suspension\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cspan\u003eWarranty Return Policy:\u003c\/span\u003e Return for supplier inspection - Immediate credit issued upon return to KAO\/NTP.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-3\"\u003eEDEL.CYLHEAD\u003c\/div\u003e\n\u003cdiv class=\"col-1\"\u003eE38\u003c\/div\u003e\n\u003cdiv class=\"col-lg\"\u003eCylinder Heads\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cspan\u003eWarranty Return Policy:\u003c\/span\u003e Return for supplier inspection - Immediate credit issued upon return to KAO\/NTP.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch1\u003eInstallation Instructions\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ekeystone.vehiclepartimages.com\/PMDT\/EDE\/InstallationInstructions\/60435.pdf\" target=\"_blank\"\u003e60435.pdf\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":50947160637497,"sku":"60435","price":2279.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/2938\/0153\/files\/ImageServerAPI-2026-10-25T224057.629.jpg?v=1792982485","url":"https:\/\/summitforgesupply.com\/products\/edelbrock-performer-rpm-chevy-454-head-290cc-runner-100cc-chamber-60435","provider":"Summit Forge Supply","version":"1.0","type":"link"}