Ross Releases 409 Pistons


Ross 409 Chevy PistonsRoss Pistons has released a new piston set for the CHEVY 409s using Edelbrock Performer RPM Cylinder Head in Street / Strip 10.5:1 Compression.

Available in + .030 and .040 over, standard 3.500 stroke as well as 4.000 stroke cranks.

ROSS 409 Chevrolet pistons are ideal for street/strip applications and are suitable for nitrous systems of 250 HP or less. ROSS stocking pistons are made on the same forgings, are the same material, and include the same quality design features as our custom pistons.

ROSS includes forced pin oilers and double spirolox on all of our stocking pistons. Our skirt design allows the pistons to work properly under intense heat and tremendous side loads without scuffing or splitting the cylinder walls. Most normally aspirated pistons are designed to operate at .004 piston skirt to cylinder wall clearance. All ROSS stocking pistons include aircraft quality pins that are heat treated and end ground to work in full floated or press fit applications.

Features Included at no extra charge

Fully CNC Machined 2618-T61 Material
5115 Precision Ground Low Carbon Steel Wrist Pins
Lock Removal Indents
Pressure Relief Reservoir
Double Spiro-Locks
Optional Skirts and Crown Coating Available


  • Block Height: 9.600
  • Compression Ratio: Based on stock heads
  • Forced Induction: No
  • Nitrous: Yes, up to 250 hp
  • Ring Grooves: 5/64, 5/64, 3/16
  • What's Included: Locks, Pins (5115 Series Straight Wall Pins)
4.3425/64, 5/64, 3/163.5006.0100.4508171.82383561
4.3421/16, 1/16, 3/164.0006.1350.3657671.45083562
4.3721/16, 1/16, 3/164.0006.1350.3607811.45083563



ROSS Racing Pistons
625 S. Douglas Street
El Segundo, CA 90245