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Chevrolet Performance Small Block Chevy Small Port Vortec Cylinder Heads
Small Block Chevy Bow Tie Small Port Cast Iron Vortec Cylinder Heads are Chevrolet Performance's most powerful cast iron cylinder head designed for street or race applications in the 400-450 horsepower range. As upgraded production heads, they have a thicker deck surface, small runners, bigger valves, and combustion chambers with exceptional low-lift flow numbers. These cylinder heads provide Chevy's Fast Burn performance in an affordable cast iron option.
No heat risers
Intake Ports: 185cc
Exhaust Ports: 65cc
Deck Thickness: .450''
Popular in short track racing
Combustion Chambers: 66cc
Hardened exhaust valve seats
Machined for 2.00''/1.55'' valves
Drilled & tapped for 7/16''-14 screw-in studs
.530'' maximum valve lift without modification
Cast Logos: Vortec (intake port roof), GM (intake port floor), Bow Tie (exhaust side)
Dual bolt patterns for: perimeter and centerbolt valve covers & early model and Vortec intake manifolds
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