Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250-2. 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 are available in your choice of straight or L98 angle plug versions. These cylinder heads feature a 75cc or 65cc 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 AFRs 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. Also available for 1987 to present engines with center bolt valve covers and 2 center intake bolts at 72º angle, AFR Part #0919. No special parts are required.
Vortec style cylinder heads available also, AFR Part #0912. Dual valve cover bolt pattern is standard.
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 rpms 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° Bead Lock Valve Keepers. 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. Max Valve Spring Pocket Machining.006 per cc 60cc Maximum. 009 per cc 55cc Maximum. Note: Angle mills might require a.
Exhaust Port Gasket, Fel-Pro #1404. Head Gasket, 350cid Fel-Pro #1003. Head Gasket, 400cid Fel-Pro #1014.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. We have AFR heads to fit almost every performance application!
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Let us work to resolve your problem so everyone is happy. Suite D7 Costa Mesa, CA 92627. The item "AFR SBC 180cc CNC Ported Aluminum Cylinder Heads 327 350 Small Block Chevy 0918" is in sale since Tuesday, June 11, 2019.
This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "treperformance" and is located in Costa Mesa, California. This item can be shipped worldwide.