Bowtie 572/720R Cylinder Head Assembly

• Aluminum racing head assembly
• Used in the 572/720R Chevrolet Performance crate engine
• Completely assembled with 2.250"/1.880" 11/32" stem valves
• Mechanical roller valve springs – not for use with hydraulic roller cams
• Good to .720" valve lift
• 310cc rectangular intake port
• 118cc exhaust port – raised 5/8"
• 118cc combustion chamber
• Not recommended for engines smaller than 572 cid

This head is assembled with the following components:

• 12366987 2.250" Intake Valves
• 12366990 Valve Spring Retainer Lock
• 88963128 1.880" Exhaust Valves
• 12366992 Valve Spring Retainer
• 88963933 Valve Springs
• 88963936 Valve Seals
• 88963937 Valve Spring Shims
• 3921912 Rocker Arm Studs
• 88963935 Valve Spring Locators
• 3860038 Pushrod Guideplates