AFR 3834/3837 BBF 315/75 OR 85CC .725 LIFT ASSEMBLED YOUR CHOICE OF CHAMBER SIZE
CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. The 315cc heads are AFR's largest and best flowing BBF heads! They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, and high quality components throughout with .250 raised exhaust port locations. These heads are best suited for large displacement high RPM Big Block Ford racing engines or radical “Pro Street” style builds. Please note, due to AFR's valve angle and location, custom pistons or notching existing pistons will be required. 315cc Aluminum BBF Cylinder Heads Part # Description Combustion Chamber 3834 Competition Porting, .250" Raised Exhaustw/ Hydraulic Roller Springs 75cc 3835 Competition Porting, .250" Raised Exhaustw/ Solid Roller Springs 75cc 3837 Competition Porting, .250" Raised Exhaustw/ Hydraulic Roller Springs 85cc 3838 Competition Porting, .250" Raised Exhaustw/ Solid Roller Springs 85cc Click part # to add product to your cart 315cc Street Head Flow Chart .200 .300 .400 .500 .600 .650 .700 .750 Int 162 241 309 360 405 415 423 427 Exh 127 172 218 252 274 279 284 284 Test conducted at 28" of water (pressure) on Superflow 600Bore Size: 4.380", 3/4" radius plate exhaust, 2 1/8" curved pipe Included Components 100% CNC Ported Combustion Chambers 100% CNC Ported Intake & Exhaust Competition 5-Angle Valve Job 11/32" Bead Lock Intake Valve 2.300" x 5.250" O.A.L 7552 11/32" Bead Lock Tulip Exhaust Valve 1.760" x 5.050" O.A.L 7553 PAC Racing #1224 1.625" OD Solid Roller Dual Valve Spring 275 lbs. on seat, .850" maximum lift, Max RPM 7400-7600 Uses #8518 Steel Retainer & #8046 Spring Cup (upgrades available) 8031 10° Manley Steel Retainers 1.500" O.D x 1.168" I.D x .844" I.D 8518 PAC Racing #1940 1.550" OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725" maximum lift Max RPM 6500-6700; Uses #8511 Steel Retainer 8002 10° Manley Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D 8511 10° 11/32" Beadlock Valve Keepers with lashcap recess 9010 ARP 7/16" Rocker Studs 6407 Adjustable 3/8" Guide Plates 6108 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 Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D 9066 11/32" Bronze Valve Guides .502" O.D x 2.250" O.A.L 9048 Recommended Components: Intake Port Gasket 6893 Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads. Exhaust Port Gasket, Fel-Pro #1420 6891 Head Gasket, 4.500 Bore, Fel-Pro #1018 6892 Head Bolts, ARP #155-3603 6340 Head Studs, ARP# 155-4203 12 Point 6341 Head Bolt Washers, Manley 6320 Stud Girdle 6209 1.75 Shaft Mount Rocker Arms T&D 6067 Suggested Manifold AFR Single Plane, AFR# 4992 or 4993 Spark Plug Starting Range Autolite 3932 Specifications & Features: Material A356 Aluminum Intake Port Volume 315cc Intake Port Dimension 2.275" H x 1.850" W x .575 Radius Intake Port Location Stock Exhaust Port Volume 142cc Exhaust Port Dimension 1.850"H x 1.600"W Exhaust Port Location .250" Raised Combustion Chamber Size 75cc or 85cc Valve Cover Bolt Pattern Perimeter Bolt Valve Angle 14° Intake/8° Exhaust Valve Spring Pocket Diameter 1.750" O.D Max Valve Spring Pocket Machining 1.750" O.D Deck Thickness .750" Minimum Bore Diameter 4.360" Minimum Cross Sectional Area 3.440 sq. in. Spark Plug Dimensions 14mm x .750" w/Gasket Seat SHIPS IN THE LOWER 48 STATES FREE! CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. CONTACT US THE PRICE IS NEGOTIABLE BEST OFFER Warning: May cause cancer and reproductive harm.