Small-Port Vortec Bowtie Cylinder Head Assembly

• Completely assembled, ready to bolt on
• 185cc intake ports
• 65cc exhaust ports
• Use Fel-Pro® Part Number 1470 exhaust gasket
• Bare head Part Number 19331471, available separately

Vortec Bowtie Cylinder Head Technical Notes:

• Cast-iron small runner or large runner cylinder heads*
• 62cc combustion chambers
• .450" deck thickness
• Hardened exhaust valve seats
• Machined for 2.000"/1.550" valves
• Maximum .530" valve lift (without modifications)
• Straight spark plug design
• No heat risers
• Drilled and tapped for 7/16"-14 screw-in studs
• Dual bolt patterns for Vortec and early-style intake manifolds (Vortec intakes P/N 12366573, 12496820, 12496821, 12496822 or 12489371)
• Use intake gasket P/N 89017465 for Vortec intakes or dual pattern intake gasket P/N 19301685 for early-model intakes or Vortec design intake manifolds
• Dual bolt patterns for perimeter-style and center-bolt valve covers
• Vortec intake manifold three-step torque specs: 2 lb.-ft.; 9 lb.-ft.; 11 lb.-ft.

* Larger intake and exhaust ports allow for a greater volume of air to pass through the engine. The more air you flow, the more power you can make. Large-port cylinder head is discontinued.