![]() Careful attention to the material thickness in the crown increases strength without a weight penalty. With the Pro LS pistons, 2618 alloy forged aluminum was chosen for its ductility and crack resistance. The heart of a tough piston is the forging. This allows you to swap to a higher flowing cylinder head later down the line if you want. Not only do they accommodate larger valve diameters, the 6.0L and larger pistons receive combination Cathedral/Rectangle port valve reliefs to maximize piston-to-valve clearance. From there, the compression ratios have a nice spread starting in the mid-9:1 range for boost and up to 11.5:1 for naturally aspirated or nitrous motors. Summit Racing makes your life simple with a full line of pistons that fit popular strokes, rod lengths, and bore sizes. They’re 100% made in the USA and precision machined from forged 2618 aluminum. What parts are strong enough for boost or nitrous down the line?Įnter Summit Racing’s new Pro LS forged pistons for Gen.What kind of compression ratio am I targeting?. ![]() ![]() When building a LS engine, you have a lot of questions and things to decide like: ![]()
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