Our largest and highest flowing head for the small block ford is the best in-line head money can buy. Featuring 220cc intake runners, this package is recommended for race applications and radical "Pro-Street" builds. Available with 58cc or 72cc combustions chambers, you can further customize your setup with our various components upgrades and available machining options.
Included Components | |
100% CNC Ported Combustion Chambers | |
100% CNC Ported Exhaust Ports | |
100% CNC Ported Intake Ports | |
Competition 5-angle Valve Job |
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8mm Bead Lock Intake Valve 2.100" x 5.000" O.A.L. | |
8mm Bead Lock Exhaust Valve 1.570" x 5.030" O.A.L. | |
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400 | |
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
10° Bead Lock Keepers with lashcap recess | |
ARP 7/16" Rocker Studs | |
Adjustable 5/16" Guide Plates | |
Viton Valve Seals .600" O.D x .495" I.D | |
Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D | |
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep | |
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep | |
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L |
220cc Street Head Flow Chart | |||||||
.200 | .300 | .400 | .500 | .600 | .700 | .800 | |
Int | 135 | 194 | 258 | 295 | 315 | 325 | 331 |
Exh | 121 | 171 | 215 | 238 | 245 | 249 | 250 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", 3/4" radius plate exhaust, 1 7/8" curved pipe
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