{"product_id":"edl-50169","title":"CYL HEAD, JEEP PERFORMER 91-06 I6 4.0L COMPLETE W\/SPRINGS FOR FLAT TAPPET CAM","description":"\u003cp\u003e\u003cstrong\u003eBrand New Edelbrock Performer Jeep 4.0L Cylinder Head (Part #50169).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Edelbrock Performer Cylinder Head is designed as a bolt-on performance upgrade for 1987-2006 Jeep's with a 4.0L inline six engine. They feature better flowing intake\/exhaust ports along with a modern combustion chamber design and back cut and swirl polished valves for improved flow. Retains the stock valve angle, pushrod length and valve cover bolt pattern for use with factory components and off the shelf accessories. Larger reinforced rocker bosses for improved strength at high RPM and Heli-Coil threaded inserts in the intake manifold bolt holes for added strength as well as a 3\/4\" deck throughout the head also promotes stiffness and durability. This cylinder head is machined to accept both distributor or coil pack ignition. To optimize airflow, this cylinder head is designed with a 1991-2006 4.0L intake port location and 1991-98 4.0L exhaust port size. As a result, this cylinder head must be used with a 1991-2006 intake manifold and a 1991-1998 exhaust manifold. Aftermarket exhaust headers can also be used in place of 1991-1998 exhaust manifolds and MUST be used in place of 1999-2006 exhaust manifolds. Most aftermarket exhaust headers are compatible, but please check with the exhaust header manufacture to verify. \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis head is NOT compatible with 1999-2006 OEM exhaust manifolds.\u003c\/li\u003e\n\u003cli\u003eThis cylinder head is 50-state emission legal for 4.0L engines when used with factory Fuel Injection calibration and components (E.O. Number D-215-94).\u003c\/li\u003e\n\u003cli\u003ePending 50-state emission legal for 4.2L engines when used with a Mopar Fuel Injection Conversion Kit (E.O. Number D-265-21).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Performer\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 200-300 HP\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Angle:\u003c\/strong\u003e Exhaust 45 deg\/Intake 45 deg\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended spark plugs:\u003c\/strong\u003e Champion RC12YC or equivalent 14mm x 3\/4\" reach with flat gasket seat.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended gasket for 4.0L:\u003c\/strong\u003e Edelbrock #7348 or Fel-Pro #26211PT. \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeck thickness:\u003c\/strong\u003e 3\/4\".\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Valve Diameter:\u003c\/strong\u003e 1.91 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Runner Volume:\u003c\/strong\u003e 144 cc\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush Rod Diameter:\u003c\/strong\u003e 0.312 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Angle:\u003c\/strong\u003e 10 Degree\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Spring Diameter:\u003c\/strong\u003e 1.26 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Spring Maximum Lift:\u003c\/strong\u003e 0.540 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Stem Diameter:\u003c\/strong\u003e 0.3125 in\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou can view and download the complete assembly instruction booklet \u003ca style=\"color: red;\" href=\"https:\/\/southwestspeed.com\/cdn\/shop\/files\/EDL_50169Instructions.pdf\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e","brand":"EDL 50169","offers":[{"title":"Default Title","offer_id":50395483865369,"sku":"EDL 50169","price":1933.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/0477\/6985\/files\/EDL_50169.jpg?v=1745359854","url":"https:\/\/southwestspeed.com\/products\/edl-50169","provider":"Southwest Speed","version":"1.0","type":"link"}