AFR Direct Master Warehouse Distributor – All AFR Products Available. AFR 325cc BBC Rectangle Cylinder Heads. AFR’s 325cc heads feature partially CNC ported intake and exhaust, fully cnc chamber, A356 aluminum castings and high quality components throughout. Recommended for more aggressive street, or street/strip builds with displacements up to 540 cubic inches, operating up to 6800 RPM. Included 100% CNC chambers for increased air flow (see chart). Component upgrades and machining options are available to customize AFR Heads to your specific build. AFR Part # 2101-1. 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. AFR’s Best of Both Solution Are you looking for big torque and big horsepower numbers? Our BB Chevy line of medium volume intake runners will provide you with exactly that. The phrase “having your cake and eating it to” would certainly be appropriate with the moderately sized intake runners producing tremendous flow figures across the entire lift range. These high flow/high velocity ports provide extreme versatility and fill the needs of many applications. From a max-effort high compression 454 to a 605 CID low rpm marine application, these aluminum cylinder heads would be a great choice. These heads would also be ideal in a larger cubic inch “Pro-Street” application with their broad torque range, as well as significant rpm and horsepower capability. 750″ thick head deck, reinforced rocker stud bosses, and are equipped with premium one piece stainless steel 2.300″ intake valves and 1.880 exhaust valves. Standard combustion chamber volume is 115cc’s on our 325 As Cast pieces, while the CNC Chamber 325 version comes with a 121cc chamber. Properly selecting the correct cylinder head for an application depends on a large number of variables. Please consult with one of our sales technicians to assist you in making the best decision for your particular application Note: Optional stud girdle required for 2° rolled valve angles and 1 longer head bolts needed on four bottom exhaust bolt holes. Longer pushrods might also be required. IN STOCK AFR# 2101-1 – 325cc. Heads, Rectangle Port, CNC 121cc Chambers. AFR# 3250-1 – 325cc. CUSTOM ORDER – typically takes 3-4 weeks: AFR# 2101 – 325cc Heads, Rectangle Port, 117cc Chambers. NON-emission AFR# 3250 – 325cc Heads, Rectangle Port, 117cc Chambers, No Parts, NON-emission. Due to the large demand for AFR heads, AFR currently takes 3-4 weeks to build a set of heads. 20% CNC Ported Exhaust Ports 30% CNC Ported Intake Ports. CNC Ported Combustion Chambers. Competition 5-angle Valve Job. 11/32″ Intake Valve, 2.300″ x5.500 O. 11/32″ Nail Head Exhaust Valve, 1.880″ x 5.450 Overall Valve Length. PAC Racing Spring #1224 1.625 O. Solid Roller, 275lbs on seat. Manley 10° Steel Retainers 1.500 O. D x 1.168 I. 10° 11/32 Valve Locks with lashcap recess. ARP 7/16 Rocker Exhaust Studs. ARP 7/16 Rocker Intake Studs. Adjustable 3/8 Guide Plates. 11/32 Viton Valve Seals. Hardened Spring Cup 1.740 O. D / 1.650 I. Intake Valve Seats 2.450 O. D x 2.000 I. Exhaust Valve Seats 2.000 O. D x 1.580 I. 11/32 Intake Bronze Valve Guides. D x 2.10 O. 11/32 Exhaust Bronze Valve Guides. D x 2.25 O. Specifications, Features, and Optional Supporting Components. Head Gasket, Fel-Pro #1047 (Mark V and VI). Head Gasket, Fel-Pro #1017-1 (Mark IV). Head Bolt Washers, Manley. Spark Plug Starting Range. 121cc w/ CNC Chambers or 117cc w/ As Cast Chambers. Valve Spring Pocket Diameter. 2.360″H x 1.685″W x 3/8 Radius. 1.720″H x 1.920″ W. 24°/4° Intake, 15°/4° Exhaust. 009 per cc/ Maximum 104cc as cast or CNC Chamber. 006 per cc/ Maximum 108cc as cast or 114cc CNC Chamber. Stud Girdle, (AFR Specific). 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. 1 longer head bolts needed on four bottom exhaust bolt holes. Angle mills might require a. 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. The item “AFR BBC 325cc Rectangle Cylinder Heads CNC Ported Chevy Big Block 540 2101-1″ is in sale since Wednesday, January 20, 2016. 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.
- Placement on Vehicle: Front
- Part Brand: Air Flow Research
- Interchange Part Number: Airflow 2101-1 121cc
- Brand: Air Flow Research
- Warranty: Yes
- Core Charge: None
- Manufacturer Part Number: AFR 2101-1