AFR SBC 180cc CNC Ported Aluminum Cylinder Heads 327 350 Small Block Chevy 0911. This product data sheet is originally written in English. AFR Direct Master Warehouse Distributor – All AFR Products Available. AFR 180cc SBC Eliminator Cylinder Heads. AFR’s 180cc “Street” heads are a cost effective performance choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines with displacements up to 383 cubic inches, operating up to 6000 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250-2. AFR Part # 0911. There are many different options available for AFR heads, please view the details section below for the details on these heads. For the many other AFR heads available, and options such as upgrading springs or retainers. The Small Port, High Velocity Torque Monster! The AFR Emissions Legal (versions from 1969-94 with heat riser, CARB EO #D-250-2), 180cc intake port small block Chevy cylinder heads straight plug version. These cylinder heads feature a 75cc combustion chamber with a 64cc exhaust port and a 3/4 thick head deck ideal for nitrous or blower applications. Standard valves are lightweight 8mm 2.020 intake and 1.600 exhaust with AFR’s hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of idle to 5500 rpm (higher rpm ranges possible depending on combination of parts), 23º valve angle, and standard valve spacing make this the perfect street aluminum cylinder head for 327 cid to 350 cid engines from 1955-86. The exhaust ports are raised. 100 over a standard GM L-98 cylinder head. AFR suggests you upgrade your springs to AFR part #8019, 1.270 O. With higher spring pressures to reduce chances of valve float associated with rpm’s 6200 or higher, but smaller cams with less than. 500 lift can rev to 6500 rpm with the included springs. Due to the large demand for AFR heads, AFR currently takes 3-4 weeks to build a set of heads. 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports Competition 5-angle Valve Job. 8mm Bead Lock Intake Valve, 2.020″ x 4.900″ Overall Valve Length. Bead Lock Exhaust Valve, 1.600. PAC Racing Spring 1.290 OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat. 7° Chrome Moly Retainers. 7° Bead Lock Valve Keepers. ARP 3/8 Rocker Studs. Adjustable 5/16 Guide Plates. Ductile Iron Intake Valve Seats 2.200 O. D x 1.750 I. Ductile Iron Exhaust Valve Seats 1.696 O. D x 1.325 I. Specifications, Features, and Optional Supporting Components. 2.050″ H x 1.250″ W 5/16 Radius. 1.450″ H x 1.550″ W. Valve Cover Bolt Pattern. Valve Spring Pocket Diameter. Max Valve Spring Pocket Machining. 006 per cc 60cc Maximum. 009 per cc 55cc Maximum. Minimum Cross Sectional Area. Note: Angle mills might require a. 120 Thick intake gasket. Intake Gasket, Fel-Pro #1205. Exhaust Port Gasket, Fel-Pro #1404. Head Gasket, 350cid Fel-Pro #1003. Head Gasket, 400cid Fel-Pro #1014. Head Bolt Washers, Manley. Stud Girdle GM L98. Spark Plug Starting Range. Important: Do not port match you intake manifold to any Fel-Pro gasket as it does not precisely match AFR heads. Note: Milling head deck will affect flow numbers. Angel mills might require. 120 thick intake gasket. We have AFR heads to fit almost every performance application! – UPS Worldwide Expedited – 3-9 days GUARANTEED! (Most Countries, check UPS. Com) – UPS Worldwide Saver – 1-5 days GUARANTEED! We do not lower invoice values since it is a violation of US and International custom laws. Let us work to resolve your problem so everyone is happy. TREperformance 1725 Monrovia Ave. Suite D7 Costa Mesa, CA 92627. This item is in the category “Vehicle Parts & Accessories\Car Parts & Accessories\Engines & Engine Parts\Cylinder Heads”. The seller is “treperformance” and is located in this country: US. This item can be shipped worldwide.
- Interchange Part Number: 75cc chambers, Airflow, Fully, 100%, Straight Plug, 305, 383, 911
- Placement on vehicle: Front
- Fitment Type: Performance/Custom
- Brand: Air Flow Research
- Material: Aluminum
- Manufacturer Part Number: AFR 0911
- Country/Region of Manufacture: United States
- Manufacturer Warranty: Yes
- Core Charge: None
- Type: Small Block Chevy