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AFR 227cc LT4 SBC Racing Cylinder Head. SBC 227cc LT4 Reverse Cool heads, 70cc Chambers, Bare Heads!High flowing AFR 227cc intake port small block Chevy angle plug aluminum cylinder heads are available in three stages of performance. The Race Ready version features 100% CNC ported intakes while the higher flowing Competition version features 100% CNC ported intakes with greater detail. Both come with 100% CNC ported 76cc combustion chambers and 80cc exhaust ports with a 3/4 thick cylinder head deck (ideal for nitrous or blower applications). In addition we also offer the as cast Stage 1 heads for 227cc performance on a budget.
Standard valves are 2.100 intake and 1.600 exhaust with AFRs hardened ductile iron interlocking valve seats. The 227 has 60/40 valve spacing and piston valve pockets should be checked. The exceptional flow characteristics and 23º valve angle make this the perfect cylinder head for 350 to 434 cid engines in drag cars, sprint cars, and late model oval trackers operating from 4500 rpm and up. The 227cc cylinder heads are available in either standard or spread port exhaust. AFR offset stud girdles are the only special parts required.
Some applications require shaft mount rockers for durability and reliability of valve train components. Not recommended for street use, unless shaft mount rocker is used. The exhaust port is raised. 400 over GM L-98 cylinder head.
These cylinder heads are specifically design for 1992-95 Corvettes and 1993-97 Camaros LT-1 and LT-4 engines using the GM LT-4 or equivalent manifold. 227cc SBC Racing Aluminum Cylinder Head Part Numbers. Stage 1 Bare Heads (no parts or porting). 227cc Racing Head, LT4, Standard/Reverse Cooled. Not legal for sale or use on pollution controlled motor vehicles in the United States.
100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Valve Job. Intake Valve, 2.100 x. Exhaust Valve, 1.600 x.
1.550 OD Roller dual valve spring w/ dampener, 225lbs on seat. 710 maximum lift (upgrades available). 10° 4140 Chrome Moly Retainers. All Accessory Holes are Predrilled & Tapped! Specifications, Features, and Supporting Components.
Intake Port Gasket, 1.310" X 2.180" w/ 3/8 radius. 350cid Fel-Pro #1003, AFR #6800. 400cid Fel-Pro #1014, AFR #6802. Standard ARP, AFR #6310 & #6305.Victor Jr, Super Victor or HV1000 AFR #5005, #5003, or #5065. Spring Pocket can be cut to 1.750, no deeper. 5/16 Hardened AFR #6601 - #6604.
Important: Do not port match your intake manifold to this Fel-Pro gasket, as they do not exactly fit AFR heads. Note: Milling head deck will affect flow numb ers. NEW PART IN ORIGINAL, UNOPENED, UNINSTALLED, CONDITION ONLY. YOU MUST CALL AND RECEIVE AN RGA NUMBER PRIOR TO RETURNING ANY PRODUCT!!
The item "AFR SMALL BLOCK CHEVY 227cc LT4 BARE RACING HEADS #1196" is in sale since Wednesday, March 25, 2009. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "blueovalperformance" and is located in Vancouver, Washington. This item can be shipped worldwide.