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An easy way to gain 20–40 horsepower on any 1955-and-newer Small-Block Chevrolet V-8 (except later-style LT1/LT4 engines with reverse-flow cooling) is by installing a set of Vortec cylinder heads. These value-priced cast-iron cylinder heads use modified combustion chambers and high-velocity port technology to provide improved airflow performance compared to Gen I-style designs. Vortec cylinder heads significantly outflow non-Vortec service replacement cylinder heads and earlier OEM cast-iron heads. These cylinder heads are ideal for applications up to 350 horsepower, but they require Vortec-specific intake manifolds and center bolt valve covers.

 
 
Displaying 1 - 12 of 22 results
Complete Cast Iron Vortec Cylinder Head Assembly 12691728
12691728
List: $749.87
Price: $691.74
12691728 Complete Cast Iron Vortec Cylinder Head Assembly Replaces 12558060
Head,Cylinder, Vortec with Valves 19331470
GM
19331470
List: $1,168.80
Price: $1,078.20
19331470 Head, cylinder, Vortec with Valves, Replaces 25534421
Priced per each, 2 required per engine
Bare Small Port Vortec Bow-Tie Cylinder Head 19331471
19331471
List: $779.79
Price: $719.36
19331471 GM Performance Parts Bare Vortec Small Port Cylinder Head, Replaces 25534351
Fast Burn Cylinder Head 19417591
19417591
List: $962.03
Price: $887.46
19417591 Fast Burn Cylinder Head
Cylinder Head (Aluminum Fast Burn) 19417592
19417592
List: $1,447.45
Price: $1,335.28
19417592 Cylinder Head (Aluminum Fast Burn), Repaces 19300955. 12464298
Cylinder Head, (Fast Burn) Bare 19417591
19417591
List: $962.03
Price: $887.46
19417591 Cylinder Head, (Fast Burn) Bare, Replaces 12497186, 19300956
Splayed-Valve Cylinder Head (Semi-Machined) # 12480147
12480147
List: $1,964.22
Price: $1,811.99
12480147 Splayed-Valve Cylinder Head (Semi-Machined)
Splayed-Valve Cylinder Head 24502517
24502517
List: $1,899.62
Price: $1,752.41
24502517 Splayed-Valve Cylinder Head
Sb2.2 Aluminum Cylinder Head 12480011
12480011
List: $2,919.96
Price: $2,693.66
12480011 Sb2.2 Aluminum Cylinder Head
Composition Head Gasket (Cast Iron Or Aluminum Head) # 10105117
10105117
List: $36.04
Price: $34.60
10105117 Composition Head Gasket (Cast Iron Or Aluminum Head)
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