The ultimate wedge head for a 572" engine. Big engines require superior air flow when 900 to 1000 horsepower is the goal. This combination delivers excellent torgue, horsepower and the reliability needed to make a bracket racer consistent, round after round.

Machined for jesel rockers only

Intake port volume 355cc

Exhaust port volume 118cc

Intake vale dia. 2.300-5.494OL

Exhaust valve dia. 1.88-5.522OL

Titanium 2.350 intake valve optional

Valve angle 13-degree

Must be used on 4.500 bore

Solid bronze 11/32 guides

Use Felpro #1039HG or copper with O-Ringing

Stock accessory holes

Combustion chamber volume 79cc

Ball to ball pushrods

"ANSWERS TO MOST OF YOUR QUESTIONS"

Must use spray bar valve covers

Head bolt torque 70ft. lbs.

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

Push rod length must be checked

Will accept all Indy intakes

Stock 440 exhaust bolt pattern

3/4 reach gasket seat spark plugs

Champion C57YC (cold) C63YC (hot)

2" spring height - 1.625 dia. common

Flat mill only - .006 per cc

Head bolts use ARP #440-17B

Head studs ARP #440-17

528" to 572" best range