{"id":4594744721486,"title":"DART 19574136 BBC 355cc CNC Pro-1 Head 121cc R\/P 2.30\/1.88 Assm","handle":"drt19574136","description":"\u003cp\u003eCylinder Head - Pro 1 CNC - Assembled - 2.300 \/ 1.880 in Valves - 355 cc Intake - 121 cc Chamber - 1.625 in Springs - Aluminum - Big Block Chevy - Each\u003c\/p\u003e","published_at":"2020-03-24T09:51:49-05:00","created_at":"2020-03-24T09:51:50-05:00","vendor":"DART","type":"Cylinder Heads","tags":["Accessory Bolt Holes Drilled: Yes","CNC-Machined Combustion Chamber: Yes","CNC-Machined Exhaust Runner: Yes","CNC-Machined Intake Runner: Yes","Combustion Chamber Style: Heart","Combustion Chamber Volume (cc): 121","Cylinder Head Finish: Natural","Cylinder Head Material: Aluminum","Cylinder Head Style: Assembled","Damper Spring Included: No","Engine Size and Year: 6.5L \/ 396 1965-70","Engine Size and Year: 6.6L \/ 402 1970-72","Engine Size and Year: 7.0L \/ 427 1963-69","Engine Size and Year: 7.4L \/ 454 1970-00","Exhaust Port Location: Raised","Exhaust Port Shape: Round","Exhaust Runner Volume (cc): 138cc","Exhaust Valve Angle: 15","Exhaust Valve Diameter (in): 1.880 in.","Exhaust Valves Included: Yes","Guideplate Pushrod Size: 3\/8 in.","Guideplates Included: Yes","Heat Crossover: No","Intake Port Location: Standard","Intake Port Shape: Rectangular","Intake Runner Volume (cc): 355cc","Intake Valve Angle: 24","Intake Valve Diameter (in): 2.300 in.","Intake Valves Included: Yes","Lock Style: 10 degree","Locks Included: Yes","Machined for O-Ring: No","Make: Chevy","Maximum Valve Lift (in): 0.850 in.","Number of Springs Per Valve: Dual","Oiling Style: Through pushrod","Outside Diameter of Outer Spring (in): 1.625 in.","Quantity: Sold individually.","Retainer Material: Titanium","Retainers Included: Yes","Rocker Arm Nut Thread Size: 7\/16-20 in.","Rocker Arm Nuts Included: No","Rocker Arm Studs Included: Yes","Rocker Arms Included: No","Steam Holes Drilled: No","Valve Cover Mounting Style: Perimeter bolt","Valve Guide Material: Manganese bronze","Valve Guides Included: Yes","Valve Seat Machine Style: 4-angle intake\/3-angle exhaust","Valve Seat Material: Ductile iron","Valve Seats Machined: Yes","Valve Springs Included: Yes","Valve Stem Seal Style: Positive stop","Valve Stem Seals Included: Yes"],"price":323858,"price_min":323858,"price_max":323858,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":31906040676430,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"DRT19574136","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"DART 19574136 BBC 355cc CNC Pro-1 Head 121cc R\/P 2.30\/1.88 Assm","public_title":null,"options":["Default Title"],"price":323858,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.winnerscircle.com\/cdn\/shop\/products\/DRT19574136.jpg?v=1585061511"],"featured_image":"\/\/www.winnerscircle.com\/cdn\/shop\/products\/DRT19574136.jpg?v=1585061511","options":["Title"],"media":[{"alt":null,"id":6562707669070,"position":1,"preview_image":{"aspect_ratio":1.075,"height":372,"width":400,"src":"\/\/www.winnerscircle.com\/cdn\/shop\/products\/DRT19574136.jpg?v=1585061511"},"aspect_ratio":1.075,"height":372,"media_type":"image","src":"\/\/www.winnerscircle.com\/cdn\/shop\/products\/DRT19574136.jpg?v=1585061511","width":400}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eCylinder Head - Pro 1 CNC - Assembled - 2.300 \/ 1.880 in Valves - 355 cc Intake - 121 cc Chamber - 1.625 in Springs - Aluminum - Big Block Chevy - Each\u003c\/p\u003e"}