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AFR's 345cc BBC cylinder head is recommended for radical street/strip, "Pro Street," or racing applications with displacements up to 572 cubic inches, operating at or below 7000 RPM. The intake runners and exhaust ports are partially CNC machined, while the combustion chambers are offered with partial or full CNC machining with a bowl blend. These heads are capable of flowing 401 CFM at 0.700" of lift. AFR heads are available bare (without parts). Please see footnotes for additional information.
| 345cc Aluminum BBC Cylinder Heads | ||
|---|---|---|
| Part # | Description | Combustion Chamber |
| 2110 | CNC Bowl Blend & Partial CNC Chamber | 117cc |
| 2110-1 | CNC Bowl Blend & Fully CNC Chamber | 121cc |
| 345cc BBC Partial CNC Chamber Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .600 | .700 | |
| Int | 150 | 222 | 290 | 340 | 380 | 401 |
| Exh | 131 | 171 | 210 | 244 | 267 | 280 |
| 345cc BBC Full CNC Chamber Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .600 | .700 | |
| Int | 172 | 246 | 312 | 356 | 390 | 397 |
| Exh | 148 | 193 | 240 | 265 | 274 | 279 |
Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.500", 3/4" radius plate exhaust, 2 1/8" curved pipe
| Included Components | |
| Competition 5-angle valve job | |
| 50% CNC Ported Combustion Chambers | |
| 20% CNC Ported Exhaust Ports | |
| 30% CNC Ported Intake Ports | |
| 11/32" Intake Valve, 2.300" x5.500" O.A.L | AFR7626 |
| 11/32" Tulip Exhaust Valve, 1.880" x 5.450" O.A.L | AFR7631 |
| PAC Racing Spring #1224 1.625 O.D. Solid Roller, 275lbs on seat, .850 Maximum Lift, Max RPM 7400-7600 | AFR8031 |
| Manley 10° Steel Retainers 1.500" O.D x 1.168" I.D x .844" I.D | AFR8518 |
| 10° 11/32" Valve Locks with lashcap recess | AFR9005 |
| ARP 7/16" Rocker Exhaust Studs | AFR6406 |
| ARP 7/16" Rocker Intake Studs | AFR6407 |
| Adjustable 3/8" Guide Plates | AFR6109 |
| 11/32" Viton Valve Seals | AFR6613 |
| Hardened Spring Cup 1.740" O.D / 1.650" I.D | AFR8046 |
| Intake Valve Seats 2.450" O.D x 2.000" I.D x .375" Deep | AFR9065 |
| Exhaust Valve Seats 2.000" O.D x 1.580" I.D x .375" Deep | AFR9064 |
| 11/32" Intake Bronze Valve Guides .502" O.D x 2.10" O.A.L | AFR9041 |
| 11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L | AFR9042 |
| Specifications & Features: | |
| Material | A356 Aluminum |
| Intake Port Volume | 345cc |
| Intake Port Dimension | 2.435"H x 1.765"W x 13/32 Radius |
| Intake Port Location | Stock |
| Exhaust Port Volume | 132cc |
| Exhaust Port Dimension | 1.720"H x 1.920" W |
| Exhaust Port Location | .375" Raised |
| Combustion Chamber Size(As Cast) | 117cc |
| Combustion Chamber Size(Full CNC) | 121cc |
| 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 108cc As Cast or 114cc CNC Chamber |
| Angle Mill | .009" per cc/Maximum 104cc As Cast or CNC Chamber |
| Note:Angle mills might require a .120" Thick intake gasket. | |
| Minimum Cross Sectional Area | 3.263 sq. in. |
| Spark Plug Dimensions | 14mm x .750" w/Gasket Seat |
| Categories | Engine Components |
|---|---|
| Manufacturer Part Number | 2110 |
| Brand | Air Flow Research |
| Part Type | Cylinder Heads |
| Vehicle Make | Chevrolet |
| Engine Type | Big Block |
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