{"product_id":"dart-127222-shp-aluminum-small-block-chevy-cylinder-heads","title":"Dart SHP Aluminum Small Block Chevy Cylinder Heads","description":"\u003cp\u003eExcellent street, strip, oval track, truck or marine performance upgrade. Maximum torque and throttle response from idle to 6,000 RPM. Best for 327-400 cubic inch engines. Works with most standard components.\u003c\/p\u003e\n\u003cp\u003eDart’s SHP (Special High Performance) 23° 180cc cylinder heads provide an affordable option to those looking for the weight savings of an Aluminum head for a street performance engine. The SHP is designed to work with most off the shelf components.\u003c\/p\u003e\n\u003cp\u003eThe SHP head’s precision cast ports are designed to offer excellent flow and power without the need for CNC porting. Optimized chambers increase combustion efficiency, and multi-angle intake seats and radiused exhaust seats dramatically increase performance. Manganese Bronze valve guides increase the life of the head.\u003c\/p\u003e\n\u003cp\u003eHeads are sold individually.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: RMR Cast Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003eValve Angle: 23\u003cstrong\u003e°\u003c\/strong\u003e (stock)\u003c\/li\u003e\n\u003cli\u003eIntake Port Volume: 180cc\u003c\/li\u003e\n\u003cli\u003eIntake Valve: 2.020”\u003c\/li\u003e\n\u003cli\u003eExhaust Valve: 1.600”\u003c\/li\u003e\n\u003cli\u003eChamber Volume: 64 or 72cc\u003c\/li\u003e\n\u003cli\u003ePlug Type: Straight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e72cc Combustion Chambers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dart","offers":[{"title":"Default Title","offer_id":39899810955416,"sku":"0F9P7","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0564\/0867\/0360\/products\/SHP-23-180cc_port_20_3.png?v=1620256233","url":"https:\/\/frsport.com\/products\/dart-127222-shp-aluminum-small-block-chevy-cylinder-heads","provider":"FR SPORT","version":"1.0","type":"link"}