19331470 - Small Port (185cc) Cast Iron Vortec Bowtie Head Assembly- 2.00" Intake, 1.55" Exhaust

Complete Vortec Bow-Tie Small Port Cylinder Head
The most powerful, Vortec Bowtie cast-iron head within the Chevrolet Performance portfolio. This cast-iron head features bigger valves, a thicker deck surface, and the Chevrolet bowtie.

Cast-iron small runner cylinder heads
o 66cc combustion chambers
o 0.450" deck thickness
o Hardened exhaust valve seats
o Machined for 2.000"/1.550" valves
o Maximum 0.530" valve lift (without modifications)
o Straight spark plug design
o No heat risers
o Drilled and tapped for 7/16"-14 screw-in studs
o 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)
o Use Dual pattern intake gasket P/N 19301685 for early model intakes and Vortec design intake manifolds
o Dual bolt patterns for perimeter-style and center-bolt valve covers
o Vortec intake manifold three-step torque specs: 2 lb.-ft.; 9 lb.-ft.; 11 lb.-ft.
o Completely assembled, ready to bolt on with Lightweight hollow stainless intake valves and sodium filled stainless exhaust valve with modern LS style Beehive valve springs and components
o 185cc intake ports
o 65cc exhaust ports
o Use Fel-Pro(R) P/N 1470 exhaust gasket