Federal Mogul L-2490NF Speed-Pro Powerforged Flat Top Piston for Small Block Chevy 350

The Federal Mogul L-2490NF is a Speed-Pro Powerforged flat top piston designed for Small Block Chevrolet 350 cubic inch engines. This high-performance forged piston is manufactured using Speed-Pro's exclusive powerforging process, where aluminum slugs are forged under up to 3,000 tons of force to create a superior grain flow pattern that delivers exceptional strength, ductility, and heat dissipation capabilities.

Key Features:

• Constructed from exclusive high-silicon VMS-75 aluminum alloy found only in Speed-Pro Powerforged pistons
• Flat top design with two valve reliefs for improved valve clearance
• Precision CNC-machined dome and skirts for exact tolerances
• Micro-finished ring grooves for optimal ring seal and reduced blow-by
• Exclusive DUROSHIELD skirt coating provides scuff resistance and allows tighter bore clearances
• Piston weights matched to within 4 grams per set for smooth operation
• Skirt sizes matched to within 0.016mm (0.0006 inches) per set
• Machined valve reliefs and circlip grooves included
• Includes LR-63 lock rings for full-floating pin applications

Speed-Pro Powerforged pistons are built to handle the demands of high-performance street engines, including forced induction and nitrous applications. The forging process creates a durable piston that resists the stresses of increased cylinder pressures while maintaining precise dimensional accuracy. Compatible with 5.7-inch connecting rods and designed for use with standard Small Block Chevy 350 engine configurations.