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United Engine Machine IC999KTD. 060 Big Block Chevy 427/489ci Forged Pistons & Ri
Big Block Chevy 427/489ci Forged Pistons & Rings Hollow Dome 4.310 Bore +. 060 6.385/6.135" Connecting Rod 3.760/4.250" Crank Stroke -43cc Head Volume Comp.
Ratio: 11.4/119cc 8/pkg Technical Specs:Alloy: Premium High Ductility 2618Bore: 4.310"Crankshaft Stroke (427ci): 3.760" (Must use 6.385" rod length)Crankshaft Stroke (489ci): 4.250" (Must use 6.135 rod length). 060 Big Block Chevy 427/489ci Forged Pistons & Ri. Big Block Chevy 427/489ci Forged Pistons & Rings. 6.385/6.135 Connecting Rod. 3.760/4.250 Crank Stroke.
Alloy: Premium High Ductility 2618. Crankshaft Stroke (427ci): 3.760" (Must use 6.385" rod length). Crankshaft Stroke (489ci): 4.250" (Must use 6.135" rod length). Connecting Rod Length (427ci): 6.385" (3.760" Stroke).Connecting Rod Length (489ci): 6.135" (4.250" Stroke). Pin Size: 0.990'' x 2.750. Intake Valve Relief: 0.275'' Depth / 2.420'' Diameter.
Exhaust Valve Relief: 0.000" Depth / 0.000" Diameter. Top Landing Height: 0.340.
Ring Grooves: 1/16'' Top; 1/16'' Middle; 3/16'' Bottom. Compression Ratio: 11.4:1/119cc.Will fit AFR, RHS, Trick Flow, World, Edelbrock, Brodix, Dart, and OE Chevy open chambered heads that are 118cc's or larger. Always check piston to chamber and valves to assure you have adequate opening clearance.
Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.