SB Ford Pro-Series PRO205 203cc Aluminum Cylinder Heads. 2.08" intake, 1.60" exhaust, 58cc combustion chambers. 8mm guides, .125" raised exhaust port, 3/4" thick deck. Designed for ULTIMATE flow. Manufactured from A356-T6 aluminum. Assembled with 1.47" OD springs for hydraulic roller cams up to .625" lift. Requires 7/16" stud rocker arms. Rocker studs included. Adjustable guide plates required (sold separately). Each pair comes assembled with a detailed flow sheet and assembly blueprint. Vacuum tested. Download Data here - DOWNLOAD Sold as pairs. NOTE: Not for use with factory 5.0L pistons. Check piston to valve clearance in all applications.

• Head Gasket Fel-Pro #1011-2 or equivalent
  Head Bolt Torque 7/16" 70/80 ft/lb - 1/2" 100/110ft/lb short/long
  Head Bolts ARP #154-3605 (7/16") #154-3603 (1/2")
  Head Studs ARP #154-4003 (1/2")
  Rocker Stud Torque 45 ft/lbs.
  Rocker Stud Girdle AFR #6207
  Rocker Arms Stud Mount Standard
  Intake Port (cc) 203cc
  Intake Port Dimensions 2.13" x 1.28"
  Intake Gasket Fel-Pro #1262 or equivalent
  Suggested Intake Manifold Edelbrock Super Victor or Victor Jr.
  Exhaust Port (cc) 71cc
  Exhaust Port Location Raised .125"
  Exhaust Port Dimensions 1.40" x 1.40"
  Exhaust Gasket Fel-Pro #1487 or equivalent
  Intake Valve Size 2.08"
  Exhaust Valve Size 1.60"
  Valve Angle 20°
  Valve Spring Pocket O.D. 1.64"
  Valve Guide Size 8mm .500" (Top) .560" (Base)
  Deck Thickness .750"
  Combustion Chamber (cc) 58cc
  Spark Plug Size 14mm x .750" Gasket (eg. Autolite #3922)
  Spark Plug Location/Angle OE/Angle

Intake Valves: PW 360042 (2.08" x 5.00" x 8mm)
Exhaust Valves: PW 360047 (1.60" x 5.03" x 8mm)
Valve Springs: Howards Cams 98445-16
Valve Spring Locators: Comp Cams 4776-16
Valve Spring Retainers: Manley 23635-16 (10 degree)
Valve Locks: Comp Cams 632-16 (10 degree)
Valve Seals: PW 360487 (8mm x .500")
Rocker Studs: PW 360376 (7/16")