NPR American V8 Engine Ring Series Piston Ring Set - 3.937 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder COM34-236-4 Brackets include studs

Brackets include studs

Provides 3500 to 3800 Stall behind Small Blocks and 3800 to 4000 Stall behind Big Blocks

For Use with Aluminum Rocker Arms

short water pump and crankshaft pulleys are made of aluminum billet and available with single or double grooves

Scale Ramps rise 2

NPR American V8 Engine Ring Series Piston Ring Set - 3.937 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder COM34-236-4 Brackets include studsProduct Description: Piston Rings American V8 Engine Ring Series 3. 937 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