AFR 315cc Bullitt Big Block Ford Cylinder Heads 85cc, Raised Exhaust, Hydraulic Roller Springs

AFR's 315cc 14 degree aluminum cylinder heads have 2.300" intake valves and 1.760" exhaust valves that move tremendous volumes of air through conservative runner volumes, spelling big torque and horsepower numbers. With combustion chamber volumes of 85cc (Milling from 75-83cc possible for $250) accompanied by 142cc exhaust ports (raised .250"), AFR's new 300cc is the ultimate choice for large displacement racing engines operating at high RPM. AFR's trademark 3/4" thick cylinder head deck makes them ideal for heavy nitrous or blower applications. These heads have the 1.550" OD Hydraulic Roller Valve Springs, .725" maximum lift for high RPM's.

Notes:
Due to AFR's revised valve location and angle, application specific AFR pistons or fly cutting your current pistons will be required.

Basic Package Components	Part #
100% CNC Ported Combustion Chambers 100% CNC Bowl Blend Intake & Exhaust, Intake Gasket Match Competition 5-Angle Valve Job
11/32" Bead Lock Intake Valve 2.300" x 5.250" O.A.L	AFR #7552
11/32" Bead Lock Tulip Exhaust Valve 1.760" x 5.050" O.A.L	AFR #7553
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	AFR #8002
10° Manley Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D	AFR #8511
10° 11/32" Beadlock Valve Keepers with lashcap recess	AFR #9010
7/16" Rocker Studs Intake	AFR #6407
Adjustable 3/8" Guide Plates	AFR #6108
11/32" Viton Valve Seals	AFR #6610
Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D	AFR #8048
Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep	AFR #9065
Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D	AFR #9066
11/32" Bronze Valve Guides .502" O.D x 2.250" O.A.L	AFR #9048

Specifications, Features, and Optional Supporting Components

Intake Port Gasket	AFR #6893
Exhaust Port Gasket, Fel-Pro #1420	AFR #6891
Head Gasket, 4.500 Bore, Fel-Pro #1018	AFR #6892
Head Studs, ARP# 155-4202 12 Point	AFR #6341
Head Bolt Washers, Manley	AFR #6320
Stud Girdle	AFR #6209
Suggested Manifold	AFR Single Plane, AFR# 4992 or 4993
Spark Plug Starting Range	Autolite 3932
Combustion Chambers	85cc (Milling from 75-83cc possible for $250)
Spring Pocket	1.750" O.D
Valve Angle	14° Intake/8° Exhaust
Minimum Bore Diameter	4.360"
Minimum Cross Sectional Area	3.440 sq. in.

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.