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AFR 290cc BBC Oval Port Cylinder Heads, CNC Ported, Solid Roller Springs
AFR 3650
AFR's 290cc heads feature 100% CNC ported intake, exhaust and chambers, solid roller springs, A356 aluminum castings and high quality components throughout. Recommended for moderate street, or street/strip builds with displacements up to 509 cubic inches, operating up to 6500 RPM. Component upgrades and machining options are available to customize AFR Heads to your specific build.
Shipping: FREE continental USA ground shipping on ALL AFR Cylinder Heads
Was:
$4,000.04
Sale:
$3,700.04
Save:
7%
Save:
$300.00
Description
The Ultimate Street Weapon!
For the ultimate in "Oval Port" performance with solid roller springs, the fully CNC ported AFR 290 has no competition. With flow figures most small to medium sized rectangular port castings would be envious of, these high flowing "Ovals" produce tremendous airspeed and really pack a punch. AFR has included it's trademark 3/4" deck, reinforced rocker stud bosses, and thick rugged castings, so you can own the strongest and most efficient heads on the market today. Premium hardware all come as standard equipment. Take note the higher flowing exhaust ports are raised .375 over stock location, and therefore these heads might not be a direct bolt-on in every application. These heads have no EGR and are not emissions legal.
Note:
1" longer head bolts needed on four bottom exhaust bolt holes. Angle mills might require a .120" Thick intake gasket.
| Included Components | Part # |
| 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports Competition 5-angle Valve Job |
|
| 11/32" Intake Valve, 2.250" x 5.500" O.A.L | AFR #7620 |
| 11/32" Nail Head Exhaust Valve, 1.880" x 5.450" Overall Valve Length | AFR #7630 |
| PAC Racing Springs 1.550” OD Solid Roller Dual Valve Drag Race Spring, 220 lbs. on seat, .710” maximum lift, - 260* max recommended duration, Max RPM 7200-7400 (upgrades available) | AFR #8000 |
| PAC Racing #1940 1.550” OD Hydraulic Roller Dual Valve Spring, 175 lbs. on seat, .725” maximum lift, Max RPM 6500-6700 | AFR #8002 |
| 10° Steel Retainers 1.500" O.D x 1.120"I.D x .705" I.D | AFR #8511 |
| 10° 11/32" Valve Keepers with lashcap recess | AFR #9005 |
| ARP 7/16" Rocker Studs Intake | AFR #6407 |
| ARP 7/16" Rocker Studs Exhaust | AFR #6406 |
| Adjustable 3/8" Guide Plates | AFR #6109 |
| 11/32" Viton Valve Seals | AFR #6613 |
| Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D - For 8000 Spring | AFR #8048 |
| Hardened Valve Spring I.D Locator 1.655" O.D x 1.565" I.D – For 8002 Spring | AFR #8044 |
| Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep | AFR #9065 |
| Exhaust Valve Seats 2.000" O.D x 1.580" I.D x .375" Deep | AFR #9064 |
| 11/32" Intake Bronze Valve Guides .502" O.D x 2.10" O.A.L | AFR #9041 |
| 11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L | AFR #9042 |
| Recommended Components |
| Intake Port Gasket | AFR #6863 |
| Exhaust Port Gasket | AFR #6858 |
| Head Gasket | Fel-Pro #1047 (Mark V and VI) or AFR #6849 |
| Head Gasket | Fel-Pro #1017-1 (Mark IV) or AFR #6850 |
| Head Gasket | Fel-Pro #1047 (Mark V and VI) or AFR #6849 |
| Head Bolts | ARP 135-3703 (Mark IV) or AFR #6306 |
| Head Bolts | ARP 135-3707 (Mark V) or AFR #6308 |
| Head Studs | Manley, AFR #6320 |
| Head Bolt Washers | Manley, AFR #6320 |
| Stud Girdle, (AFR Specific) | AFR #6202 |
| 7/16 Stud Mount Rocker Arms - 1.7 Ratio (For Optimized Geometry) | AFR #6043 |
| 1.7 Shaft Mount Rocker Arms T&D | AFR #6065 |
| Shaft Mount Rocker Arms | Crower or Jesel Pro Series |
| Suggested Manifold | Victor Jr |
| Suggested Manifold | RPM Performer |
| Suggested Manifold | Air Gap #7561 |
| Spark Plug Starting Range | Autolite 3924 |
| Specifications & Features |
| Material | A356 Aluminum |
| Intake Port Volume | 290cc |
| Intake Port Dimension | 2.030"H x 1.830"W x1/2 Radius |
| Intake Port Location | Stock |
| Exhaust Port Volume | 135cc |
| Exhaust Port Dimension | 1.770"H x 2.010" W |
| Exhaust Port Location | .375" Raised |
| Combustion Chamber Size (Full CNC) | 112cc |
| Valve Cover Bolt Pattern | Perimeter Bolt |
| Valve Angle | 24°/4° Int, 15°/4° Exh |
| Valve Spring Pocket Diameter | 1.725" O.D |
| Max Valve Spring Pocket Machining | 1.750" O.D |
| Deck Thickness | .750" |
| Minimum Bore Diameter | 4.250" |
| Flat Mill | .006" per cc/ Maximum 102cc |
| Angle Mill | .009" per cc/ Maximum 97cc |
| Minimum Cross Sectional Area | 2.895 sq. in. |
| Spark Plug Dimensions | 14mm x .750" w/Gasket Seat |
Important:
Do not port match you intake manifold to any Fel-Pro gasket as it does not precisely match AFR heads.
Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Note:
1" longer head bolts needed on four bottom exhaust bolt holes.
Milling head deck will affect flow numbers. Angle mills might require a .120 thick intake gasket.
Details
- AFR 3650
- AFR 3650
- Air Flow Research
- New
Shipping Information
- Item Requires Shipping
- 80.0 lbs.
- W24.0000” x H12.0000” x L24.0000”
- Free Basic Shipping
- This item ships in its own box.
- FREE continental USA ground shipping on ALL AFR Cylinder Heads
- TRE Performance Difference
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