Out of stock
SKU: DRT10024370
UPC: 807051001563
MPN: 10024370
The DART SBC 165cc I/E Head 67cc Vortec 1.94/1.50 is a bare iron cylinder head engineered for small block Chevy engine builds demanding high flow and precision port geometry. This is a purpose-built component for builders and machine shops assembling performance or stroker engines where intake and exhaust flow characteristics directly impact overall engine efficiency and power output. The 165cc intake chamber paired with the 67cc combustion chamber volume creates the displacement and thermal dynamics necessary for controlled fuel burn and consistent cylinder pressure across the rpm band.
Specifications define the operational envelope: the 1.940-inch intake valve and 1.500-inch exhaust valve sizing balances breathing capacity with structural integrity and seat pressure integrity. The straight spark plug configuration simplifies ignition system routing and allows conventional plug wire or coil-pack mounting without adapter sleeves. Cast iron construction provides thermal stability critical for street and high-rpm applications where aluminum heads can suffer thermal distortion under sustained load. At 48.8 lbs, this head carries substantial material mass—a characteristic that supports long-term dimensional stability and resistance to thermal cycling stress common in turbocharged or supercharged builds where cylinder head temperatures exceed naturally aspirated norms.
This bare head assembly is intended for experienced engine builders, machine shops, and serious enthusiasts performing complete engine rebuilds or performance upgrades on small block Chevy platforms. The product requires professional installation with proper torque sequencing, gasket selection, and valve train setup by someone with demonstrable small block Chevy assembly experience. Typical applications include vintage muscle car restoration, hot rod construction, street performance builds, and racing engine programs where the combination of displacement and port flow influences total output and driveability across varying load conditions.
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