STL-H273CP30 Brand: Federal Mogul/ Product Line: Speed-Pro Hypereutectic Pistons/ Bore (in): 4.030/ Piston Material: Hypereutectic aluminum/ Piston Style: Flat/ Compression Distance (in): 1.605/ Dish Volume (cc): 8.00/ Valve Reliefs: Four/ Wrist Pin Style: Press fit/ Pin Diameter (in): 0.9120/ Top Ring Thickness: 5/64 in./ Second Ring Thickness: 5/64 in./ Oil Ring Thickness: 3/16 in./ Set Of 8NO/ Piston, Hypereutectic, Flat Top, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, 289/302,Each * Check to make sure this part fits your application Dominating the horsepower-per-dollar race. If you're looking for pistons with an unbeatable combination of performance and value, Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from FM244 aluminum alloy, which contains 16 percent silicon for greater strength and wear resistance. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that today's top engine builders demand. They're ideal for use in high-performance street, bracket racing, and Oval Track, and will work perfectly with normal ring end gaps.
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