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Gm Performance Parts L92 Cylinder Heads

With its rectangular intake ports, the L92 appears more like a race head than those you'd find on most other Gen III/IV engines. But its price speaks otherwise: bare heads can be had for about $175 each (PN 12582714), and assembled heads for just shy of $400 each (PN 12582713). Note that included with the assembled heads will be LS1-type valvesprings, retainers, and locks-so if you'll be using anything but a stock-type cam, stiffer springs will be in order.
GM Performance Parts - L92 Cylinder Heads - Wonder Head

 With its rectangular intake ports, the L92 appears more like a race head than those you'd find on most other Gen III/IV engines. But its price speaks otherwise: bare heads can be had for about $175 each (PN 12582714), and assembled heads for just shy of $400 each (PN 12582713). Note that included with the assembled heads will be LS1-type valvesprings, retainers, and locks-so if you'll be using anything but a stock-type cam, stiffer springs will be in order.  View Related Article

 

 

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