AFR 3610 BBC 265/109CC .725 LIFT COMPLETE LOWEST PRICE ON EVERY PART NUMBER MADE

Regular price $ 2,251.63

CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

Our small port, high velocity 265cc cylinder heads are a cost effective choice compared to re-worked factory big block chevy cylinder heads. 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; this torque monster is capable of flowing 354 CFM at 0.650" lift. Recommended for street, street/strip and towing applications with displacements up to 468 cubic inches operating at or below 6200 RPM. Please see footnotes for additional information.

265cc Aluminum BBC Cylinder Heads
Part # Description Combustion Chamber
3610 CNC bowl blend, Partially CNC Chamber
w/ Hydraulic Roller Springs
109cc
3620 CNC bowl blend, Partially CNC Chamber
w/ Solid Roller Springs
109cc
3610-1 CNC bowl blend, Fully CNC Chambers
w/ Hydraulic Roller Springs
112cc
3620-1 CNC bowl blend, Fully CNC Chambers
w/ Solid Roller Springs
112cc

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265cc Partial CNC Chamber BBC
  .200 .300 .400 .500 .550 .600 .650
Int 154 218 278 323 339 347 354
Exh 127 164 200 230 250 255 260
265cc Full CNC Chamber BBC
  .200 .300 .400 .500 .550 .600 .650
Int 164 236 291 326 335 342 345
Exh 135 190 230 258 265 274 280

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.310", 3/4" radius plate exhaust, 1 7/8" curved pipe

Included Components
75% CNC Ported Exhaust Ports (Bowl Blend), 75% CNC Chambers
80% CNC Ported Intake Ports (Bowl Blend)
Competition 5-angle Valve Job
11/32" Intake Valve, 2.190" x 5.460" Overall Valve Length
7601
11/32" Nail Head Exhaust Valve, 1.880" x 5.450" Overall Valve Length
7630
PAC Racing Springs#1940 1.550" O.D. Hydraulic Roller Dual Valve Spring, 175 lbs. on seat, .725" maximum lift, 473lbs @ .600 lift, Max RPM 6500-6700
8002
PAC Racing Spring 1.550 O.D. Solid Roller Valve Spring, 220lbs on seat, ..710" Maximum Lift, Max RPM 7200-7400 (upgrades available)
8000
Manley 10° Steel Retainers 1.500" O.D x 1.120"I.D x .705" I.D
8511
10° 11/32" Valve Locks with lashcap recess
9005
ARP 7/16" Rocker Exhaust Studs
6406
ARP 7/16" Rocker Intake Studs
6407
Adjustable 3/8" Guide Plates
6109
11/32" Viton Valve Seals
AFR #6610
Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D
8048
Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep
9065
Exhaust Valve Seats 2.000" O.D x 1.580" I.D x .375" Deep
9064
11/32" Intake Bronze Valve Guides .502" O.D x 2.10" O.A.L 9047
11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L 9048
Specifications & Features:
Material
A356 Aluminum
Intake Port Volume
265cc
Intake Port Dimension
2.030"H x 1.830"W x1/2 Radius
Intake Port Location
Stock
Exhaust Port Volume
132cc
Exhaust Port Dimension
1.770"H x 2.010" W
Exhaust Port Location
.375" Raised
Combustion Chamber Size(Partial CNC)
109cc
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
4.125"
Flat Mill
.006" per cc/ Maximum 102cc as cast or CNC chamber
Angle Mill
.009" per cc/ Maximum 97cc as cast or CNC chamber
Note:Angle mills might require a .120" Thick intake gasket.
Minimum Cross Sectional Area
2.640 sq. in.
Spark Plug Dimensions
14mm x .750" w/Gasket Seat

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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

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Warning: May cause cancer and reproductive harm.