NPR American V8 Engine Ring Series Piston Ring Set - 4.040 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder Flo-Fast The 227 has 60/40 valve

The 227 has 60/40 valve spacing and piston valve pockets should be checked

to fit inside 3" duct style hose or inside some NACA ducts

00" thick one-piece rotors

Maintains very high flow even at boosted fuel pressures

NPR American V8 Engine Ring Series Piston Ring Set - 4.040 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder Flo-Fast The 227 has 60/40 valveProduct Description: Piston Rings American V8 Engine Ring Series 4. 040 in Bore 1. 2 x 1. 5 x 3. 0 mm Thick Standard Tension Steel Nitride 8 Cylinder NPR Piston Rings is a world leader in the production of piston rings. A long time supplier for OEM applications, they also produce a line of performance piston rings designed for top tier performance and reliability. With performance piston rings for a wide range of engines, including popular V8's from