25534446
Large Port Vortec Bowtie Head Assembly

• Completely assembled, ready to bolt-on
• Improved air flow (281 cfm @ 0.600")
• 225cc intake ports
• 77cc exhaust ports
• 65cc combustion chambers
• Use Fel-Pro® P/N 1470 exhaust gasket (minor trimming may be necessary)
• Bare head P/N 25534445, available separately

These heads are assembled with the following components:
12363757 Intake Valves
10212808 Valve Spring Retainers
12363758 Exhaust Valves
10212810 Valve Stem Seals
12551483 Valve Springs
24503856 Valve Locks
12552126 3/8" Rocker Studs