Small-Port Vortec Bowtie Cylinder Head Assembly

Small Port Vortec Bowtie Cylinder Head Assembly

P/N 19331470

– Completely assembled, ready to bolt on
– 185cc intake ports
– 65cc exhaust ports
– Use Fel-Pro® P/N 1470 exhaust gasket
– Bare head P/N 19331471, available separa

Vortec Bowtie Cylinder Head Technical Notes:

•Cast-iron small runner or large runner cylinder heads
– 66cc combustion chambers
– 0.450″ deck thickness
– Hardened exhaust valve seats
– Machined for 2.000″/1.550″ valves
– Maximum 0.530″ 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 (early model P/N 10051103; 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.

Note: 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.