- Cylinder Heads
- Gen III Hemi Black Hawk Cylinder Heads
- Driver Side 185cc As-Cast Black Hawk Cylinder Head
Manufactured from A356 aluminum using permanent-mold technology, AFR's 185cc As-Cast Black Hawk Gen III Hemi Aluminum Cylinder Heads are outfitted with our trademarked .750” thick head deck to meet the boost and power demands of today’s OEM and aftermarket engines. We have improved the water jacketing for enhanced cooling while retaining a minimum of .200” port to water jacket thickness. Machine option available to add bolt hole and dowel provisioning for Hellcat superchargers. Designed for use with hydraulic roller camshafts up to .600” of lift, these heads are available in three different versionsPlease see footnotes for additional information.
THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING.
|185cc As-Cast Aluminum Gen III Hemi Cylinder Heads|
|Part #||Description||Combustion Chamber|
|2509||Driver Side As-Cast Intake Runner, exhaust runner & combustion chamber
w/ Hydraulic Roller Springs
|2510||Passenger Side As-Cast Intake Runner, exhaust runner & combustion chamber
w/ Hydraulic Roller Springs
|2509 & 2510||Passenger Side As-Cast Intake Runner, exhaust runner & combustion chamber
w/ Hydraulic Roller Springs
|2511||Driver Side As-Cast Intake Runner, exhaust runner & combustion chamber
Bare, No Parts
|2512||Passenger Side As-Cast Intake Runner, exhaust runner & combustion chamber
Bare, No Parts
Click part # to add product to your cart
|185cc Gen III Hemi As Cast Flow Chart|
Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.380", 3/4" radius plate exhaust, 2 1/8" curved pipe
|As-Cast Exhuast Ports, As-Cast Combustion Chambers|
|As-Cast Intake Ports|
|Competition 5-angle Valve Job|
|8mm Bead Lock Intake Valve 2.050” x 5.108” O.A.L.|
|8mm Bead Lock Exhaust Valve 1.590” x 5.135” O.A.L.|
|PAC Racing Springs 1.290” OD Hydrualic Roller Dual Valve Drag Race Spring, 140 lbs. on seat, .600” maximum lift, Max RPM 6300-6500 (upgrades available)|
|10° Chrome Moly Retainers 1.245” O.D x .880” I.D x .655” I.D|
|10° 8mm Valve Keepers with lashcap recess|
|Hardened Valve Spring Cup 1.380" O.D x 1.300" I.D x .570" I.D|
|Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep|
|Exhaust Valve Seats 1.696" O.D x 1.35" I.D x .375" Deep|
|Intake Bronze Valve Guides 8mm x 2.100" O.A.L|
|Exhaust Bronze Valve Guides 8mm x 2.100" O.A.L|
FelPro 26588R032 and 26588L032
Cometic C5750-030 and C5749-030
|Intake Port Gasket||
OE Rubber Seal
|Hellcat/Blower Intake Port Gasket||
|Important: Do not use your OE gasket as a template to port match your intake manifold.|
|Exhaust Port Gasket||
|Rocker Arms (For Optimized Geometry)||
|Shaft Mount Rocker Arms T&D|
|Important: Do not use TD 8630 Adjustable Shaft Mount Rockers. Adjuster nut hits the valve cover and cannot be used.|
|Spark Plug Starting Range||
Autolite AR-5324 Race Plug
|Specifications & Features:|
|MSCA Minimum Cross Section Area||
|Intake Port Volume||
|Intake Port Dimension||
1.750"H x 1.850"
|Intake Port Location||
|Exhaust Port Volume||
|Exhaust Port Dimension||
1.550"H x 1.760" W
|Exhaust Port Location||
|Combustion Chamber Size (As-Cast)||
|Valve Cover Bolt Pattern||
|Valve Spring Pocket Diameter||
|Max Valve Spring Pocket Machining||
Do Not Machine
|Minimum Bore Diameter||
.006" per cc/ Maximum 62cc as cast chamber
.009" per cc/ Maximum 60cc as cast chamber
|Note: Angle mills might require a .120" Thick intake gasket.|
|Spark Plug Dimensions||
14mm x 1"
|CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING.|
AFR Black Hawk Gen III Hemi Cylinder Heads
- With some domed aftermarket pistons, it may be necessary to slightly clearance or modify the piston due to our more efficient heart shaped combustion chamber design. Most of the newer designed dome profiles will clear. AFR strongly recommends material be removed from the piston and not the cylinder head. Our combustion chamber shapes are very critical to flow and altering the cylinder head can adversely affect flow and power production. It is the customers responsibility to verify proper piston to head clearance.
- Heads are designed for 3/8" pushrods. Larger pushrods will not fit without clearancing and is not recommended since some areas are very thin. AFR recommends the use of .120" thick-wall pushrods.
- For ideal geometry and wipe pattern AFR strongly recommends AFR stud mount rockers part #6043 for applications below 7400 RPM and .790 lift. For applications above these limits shaft mount rockers are typically advised.
General Recommendations for AFR Cylinder Heads:
- Bar Codes - Please keep the bar code & paperwork shipped with your head, these contain all the specs for your heads when calling AFR.
- High Volume/Pressure Oil Pumps - If you are using a high volume or high pressure oil pump it can submerge the valve seals in oil causing smoking or oil consumption. Your block manufacturer or engine builder can recommend oil restrictions to the top end/valve train components.
- Pushrods - Different length pushrods might be required, always check pushrod length. Check pushrod clearance with heads placed on the block before final assembly. Larger pushrods will not fit without clearancing and is not recommended since some areas are very thin. AFR recommends the use of .120" thick-wall pushrods.
- Mills - Flat or angle mills could affect flow numbers and might require a thicker intake gasket.
- Stud Girdles - Due to many available factory OEM and aftermarket style/variations your existing stud girdle may not fit (AFR heads require AFR Stud Girdles)
- Boosted/Nitrous Applications - We strongly recommend considering Inconel exhaust valves and AFR's optional heavy duty intake valve for power adder applications. Since boosted or nitrous oxide applications accelerate RPM quickly, additional spring pressure is required. We strongly recommend upgrading your valve springs or increasing your valve spring pressures since boost pressure on the valve reduces spring tension. For example, 15lbs boost on a 2.125 OD valve reduces the springs closed seat pressure by approximately 40-45lbs.
- All MARINE Applications - We strongly recommend Inconel exhaust valves & also offer a hard anodized coating to slow the effects of corrosion. Please see note on guide clearance below.
- Valve Guide Clearance - Your AFR Heads come with proper guide clearance (.0012"-.0016") for most applications. Boosted/Nitrous or marine applications might require additional clearance and it is the customer's responsibility to verify proper clearance in these applications.
- Valve Springs - Forced induction, nitrous oxide and cams with aggressive ramp rates may require additional spring pressure. We offer optional valve springs for these types of applications. AFR also recommends the use of billet cam cores and short travel Hydraulic Roller lifters which tolerate higher spring loads. Please don't hesitate to contact us directly if you question which spring is correct for your application.
- AFR Titanium Valves - Might require lash caps and different length pushrods. Titanium valves are coated, do not grind valves because it removes the protective coating.
- Piston to Valve - AFR assumes no responsibility for damage if the end user builds an engine without properly verifying he has enough piston to valve clearance (depth and radial clearance both checked). We recommend a minimum depth of .080" on the intake valve and .100" on the exhaust with a radial clearance of .020" minimum around the perimeter of each valve. Clay is recommended to visually verify both depth as well as radial clearance. Just checking depth is not enough, the position of the valve pocket must also be addressed. It is the customers responsibility to verify proper piston to valve clearance.
- CNC Porting - Occasionally a 100% CNC ported head might have a very small area left "as cast", this in no way affects performance.
- Shaft Mount Rockers - Shaft mount rockers might require additional clearance for proper pushrod fitment. Do not clearance the push rod area as the wall is .060" thick. If you use Jesel Shaft Mounts, AFR only recommends their Pro Series.
- Comp Cams Pro Magnum Rockers - Typically these rocker arms do not clear a 1.500" O.D retainer. A lash cap is required to space up the rocker arm.
- Spring Installation - To ease installation with 1.550" O.D or larger springs, 12 pt head bolt or studs are recommended for extra clearance. Beveled or ground washers might be needed (ARP #200-8504 comes with smaller O.D and doesn't need to be ground)
- Valve Spring Installed Heights - AFR valve spring installed height spec is +/- .015 which is the smallest shim available for adjustment.
- Rocker Arms - Use full roller rocker arms, roller tip rockers with stock style bodies are NOT recommended.