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AFR 305cc BBC Rectangle Port Cylinder Heads, Partially Ported, CNC Chambers, No Parts
AFR 3050-1
AFR's 305cc rectangle port heads feature partially ported, CNC Chambers with no parts, 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. Also available with 100% CNC chambers for increased air flow (see chart). 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:
$3,435.36
Sale:
$3,135.36
Save:
9%
Save:
$300.00
Description
For the ultimate in "Rectangle Port" performance, available in partial or full CNC ported,CNC Chambers AFR 305 has no competition. With flow figures most small to medium sized rectangular port castings would be envious of, these high flowing "Rectangle" 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, no parts 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.
| Basic Package Components | Part # |
| 50% CNC
Ported Exhaust Ports 20% CNC Ported Intake Ports 30% CNC Ported Combustion Chambers Competition 5-angle Valve Job |
| Specifications, Features, and Optional Supporting Components |
| Head Torque | 75 ft. lbs |
| Intake Port Gasket | AFR #6853 (.120" Thick) or AFR #6855 (.060" Thick) |
| Exhaust Port Gasket | AFR #6858 |
| Head Gasket, Fel-Pro #1047 (Mark V and VI) | AFR #6849 |
| Head Gasket, Fel-Pro #1017-1 (Mark IV) | AFR #6350 |
| Head Bolts, ARP 135-3703 (Mark IV) | AFR #6306 |
| Head Bolts, ARP 135-3707 (Mark V) | AFR #6308 |
| Head Studs, ARP 235-4713 | AFR #6307 |
| Head Bolt Washers, Manley | AFR #6320 |
| Suggested Manifold |
Super
Victor Victor Jr.,
|
| Spark Plug Starting Range | Autolite 3932 |
| Combustion Chambers | 121cc w/ CNC Chambers or 117cc w/ As Cast Chambers |
| Valve Spring Pocket Diameter | 1.725 O.D |
| Intake Port Dimension | 2.380"H x 1.680"W x 11/32 Radius |
| Exhaust Port Dimension | 1.720"H x 1.920" W |
| Valve Angle | 24°/4° Intake, 15°/4° Exhaust |
| Angle Mill |
.009" per cc/ Maximum 104cc as cast or CNC Chamber |
| Flat Mill |
.006" per cc/ Maximum 108cc as cast or 114cc CNC Chamber |
| Stud Girdle, (AFR Specific) | AFR #6202 |
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.
Details
- AFR 3050-1
- AFR 3050-1
- 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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