AFR Direct Master Warehouse Distributor – All AFR Products Available. AFR 385cc BBC Rectangle Port Cylinder Heads. The 385cc heads are AFR’s largest and best flowing BBC heads! They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, Titanium retainers, and high quality components throughout. These heads are best suited for large displacement (540+) high RPM Big Block Chevrolet racing engines. Component upgrades and machining options are available to customize AFR Heads to your specific build. AFR Part # 2020-TI. 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 Largest And Highest Flowing BBC Head Ever Made! As the aftermarket continues to push larger displacement combinations, even 555 CID BBCs are becoming commonplace with 600+ CID engines more plentiful than ever before. AFR is proud to announce our answer to that with our all new 385 cc Magnum, the largest and highest flowing BBC product in our line-up with flow numbers that are creeping up on many of our competitors 18 degree Pro-stock style heads. 800 lift 335 CFMs at. While this huge a runner is more clearly aimed at 572 – 632 CID applications, in a light car it could still be considered in 555-565 CID aggressive builds that are built to reliably turn 7800 – 8500 RPMs (Titanium valves recommended over 8000 RPMs). This head will be best utilized with camshafts in the. 850 lift range to take full advantage of its impressive higher lift airflow, but the best thing about this head is its ability to also provide the end user with industry leading low and mid-lift flow as well 400+ CFM at. 750 thick head deck, reinforced rocker stud bosses, and is equipped with 2.350 intake / 1.880 tulip exhaust valves. Properly selecting the right cylinder head depends on a large number of variables. Please consult with one of our sales technicians to assist you in making the best choice 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. Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads. CUSTOM ORDER – typically takes 3-4 weeks: AFR# 2020-TI – 385cc Magnum Heads, Rectangle Port. NON-emission AFR# 3580 – 385cc. Magnum Heads, Rectangle Port, Full CNC Ported. Due to the large demand for AFR heads, AFR currently takes 3-4 weeks to build a set of heads. 100% CNC Ported Chambers, Exhaust, and Intake. Competition 5-angle Valve Job. 11/32″ Intake Valve, 2.350″ x 5.500 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. 10° Titanium Retainer 1.500 O. D x 1.180 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. Valve Spring Pocket Diameter. 2.565″H x 1.810″W x 15/32 Radius. 1.780″H x 2.025″ W. 24°/4° Intake, 15°/4° Exhaust. 009 per cc/Maximum 104cc. 006 per cc/ Maximum 114cc. Stud Girdle, (AFR Specific). 1 longer head bolts needed on four bottom exhaust bolt holes. 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 385cc 100% CNC Ported Cylinder Heads Chevy Big Block 632 Race 2020-TI” is in sale since Thursday, January 21, 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
- Interchange Part Number: Rectangle Port
- Type: Big Block Chevy
- Brand: Air Flow Research
- Warranty: Yes
- Country/Region of Manufacture: United States
- Core Charge: None
- Material: Aluminum
- Part Brand: Air Flow Research
- Manufacturer Part Number: AFR 2020-TI
- Fitment Type: Performance/Custom