2. 140 in. Intake/1. 81 in. Exhaust Valve Diameter
0. 625 in. Deck Thickness
Cylinder HeadPerformer Series RPM 440 Cylinder HeadPerformer Series RPM 440 Cylinder Head; Bare; 210cc/70cc Port Vol.; 450-575HP; Standard Exh. Port; 75cc Chamber Vol.; 2.14 in. Intake/1.81 in. Exh. Valves; Single;SPECIFICATIONS:Cylinder Head Type: StandardEmission: N/AEngine Make/Size: Mopar 383-440Finish: SatinPreparation: Bolt On (Not Required)Type: CompleteUsage: Street/Hi-PerformanceWARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: This product can expose you to Lead; which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information; visit www.P65warnings.ca.gov.FEATURES:Out-of-the-Box Bolt-On PerformanceHand-Blended Intake and Exhaust BowlsCNC-Matched Intake/Exhaust Ports in Std LocationThicker Deck Surfaces Than Other BrandsCylinder Head Specifications: Combustion chamber volume: 75cc / 84cc / 88cc; Intake runner volume: 210cc; Exhaust runner volume: 70cc; Intake valve diameter: 2.140"; Exhaust valve diameter: 1.81"; Valve stem diameter: 11/32"; Valve guides: Manganese bronze; Deck thickness: 5/8"; Valve spring diameter: 1.55"; Valve spring maximum lift: .600"; Rocker stud: N/A; Guideplate: N/A; Pushrod diameter: 3/8"; Valve angle: 15�; Exhaust port location: Stock; Spark plug fitment: 14mm x 3/4 reach, gasket seat. * For headers, contact TTI (951) 371-4878. Vacuum advance distributor may not clear cylinder head. Deck thickness: 5/8", pushrod diameter: 3/8".When you design and sell the best-engineered performance products in the world, you have to have a rigorous testing program. Why? Without adequate testing, there's no way to stand