Fitment and Product Information. Cylinder Head, Ultra 18®, CNC Competition Ported, 56cc CNC Chambers, Ti Retainers, Small Chevy, Each. Brandname: Trick Flow Part Number: TFS-3181T001-C01 Product Details. Trick Flow Ultra 18® 250 cylinder heads with 18 degree runners make serious horsepowerpower ideal for drag and high-rpm circle track racing. Right out of the box, these heads deliver higher airflow numbers than fully prepped 23 degree heads. Features include Trick Flows CNC-profiled combustion chambers and CNC Competition Ported runners with a premium high resolution surface finish for maximum flow and performance. Ultra 18 250 heads accept most current 18 degree intake manifolds, headers, and other components. They require the use of offset shaft-mounted rocker arms and a mechanical roller camshaft with offset intake lifters. The heads are available fully assembled or as bare castings. Part Type: Cylinder Heads. Product Line: Trick Flow® Ultra 18® 250 Cylinder Heads for Small Block Chevrolet. Combustion Chamber Volume (cc): 56. Intake Runner Volume (cc): 250cc. Exhaust Runner Volume (cc): 100cc. Cylinder Head Style: Assembled. Cylinder Head Material: Aluminum. Intake Port Shape: Rectangular. Intake Valve Diameter (in): 2.150 in. Cylinder Head Finish: Natural. CNC-Machined Combustion Chamber: Yes. CNC-Machined Intake Runner: Yes. CNC-Machined Exhaust Runner: Yes. Combustion Chamber Style: Heart. Intake Port Location: Raised. Exhaust Port Shape: Oval. Exhaust Port Location: Raised. Spark Plug Style: Angle. Intake Valves Included: Yes. Exhaust Valves Included: Yes. Exhaust Valve Diameter (in): 1.600 in. Valve Springs Included: Yes. Maximum Valve Lift (in): 0.700 in. Outside Diameter of Outer Spring (in): 1.560 in. Damper Spring Included: Yes. Number of Springs Per Valve: Dual. Lock Style: 10 degree. Valve Stem Seals Included: Yes. Rocker Arm Studs Included: No. Rocker Arms Included: No. Rocker Arm Nuts Included: No. Valve Cover Mounting Style: Perimeter bolt. Accessory Bolt Holes Drilled: Yes. Intake Valve Angle: 18. Exhaust Valve Angle: 18. Valve Guides Included: Yes. Valve Guide Material: Bronze. Valve Seats Machined: Yes. Valve Seat Machine Style: 3-angle. Valve Seat Material: Ductile iron. Steam Holes Drilled: No. Oiling Style: Through pushrod. Machined for O-Ring: No. Notes: Requires Jesel or T&D shaft mount rocker arm system, offset 0.550 in. For the intake side and 0.220 in. For the exhaust side. Will also need special 18 degree intake manifold and custom-built headers. Shaft V8 Will not fit LT1 engines. WARNING : This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer. The item “Trick Flow TFS-3181T001-C01 Cylinder Head Ultra 18 CNC Competition Ported 56cc” is in sale since Monday, September 21, 2020. This item is in the category “eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts”. The seller is “wundercarparts” and is located in United States. This item can be shipped to United States, Canada, United Kingdom, Australia, Mexico, Germany, Japan, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Panama, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.
- Interchange Part Number: TRF_TFS-3181T001-C01
- Manufacturer Part Number: TFS-3181T001-C01
- UPC: 842645108679
- Brand: Trick Flow
- Warranty: Unspecified Length