The ultimate wedge head for a 572” engine. Big engines require

superior air flow when 900 to 1000 horsepower is the goal. The

572-13 head is designed for a 4.500” bore with the valves moved on

center. This allows the exhaust valve to be moved and a larger

diameter intake valve to be utilized. This combination delivers

excellent torque, horsepower, and the reliability needed to make a

bracket racer consistent, round after round. The 572-13 heads

respond best when used with the NEW 440-3X big volume 4500

intake manifold. If your searching for more power select the 440-15

Indy tunnel ram intake manifold. These combinations produce a

572 engine that is a lightweight maxx power combination just

waiting to win.

• Can be purchased in kit form (572-13K)

• 572-13K includes everything between block and carb

(head studs ARP #440-17 must purchase separately)

• Assembled heads come with roller springs good up to

.800” lift, CNC chambers, porting required

• Customer must supply cam specs

• Machined for Jesel rockers only

• Valve angle 13 degrees

• Stock 440 exhaust bolt pattern

• Accessory holes in stock location

• Intake port volume 335cc

• Exhaust port volume 118cc

• Intake valve diameter 2.300” - 5.494” overall length

• Exhaust valve diameter 1.88” - 5.522” overall length

• Titanium 2.350” intake valve is optional

• 79cc combustion chamber volume

• Flat mill .006” per combustion chamber cc

• Can be milled to 62cc

• 4.500” bore required for 572-13 heads

• Must use spray bar valve covers (440-8S)

• 2” spring height, 1.625” common diameter

• Head gasket: Fel-Pro #1039, or copper with o-ringing

• Intake gasket Indy #218

• Exhaust header gasket Indy #222

• Head studs: ARP #440-17

• Valve guides 11/32 solid bronze

• 3/4 reach gasket seat spark plugs

• Champion C57CX (cold) to C63CX (hot)

• Accepts all Indy intake manifolds

• Head stud torque 70ft lbs.

• 7/16-14 Jesel rocker bolts 50 ft. lbs.