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Notes: Designed to use a 396 block with a 454 crankshaft. Centered pin. No mini grooves on top land. For a 396ci engine (4.095\" std bore), this piston will be a .090\" over bore. Compression ratio will be 10.9 on 96.5 head (Closed chamber head).Technical Specs:Alloy: Premium 4032 AlloyBore: 4.185''Crankshaft Stroke: 4.000''Connecting Rod Length: 6.135''Deck Height: 9.800''Compression Height: 1.645''Pin Size: 0.990'' x 2.750''Pin Location: CenteredSolid Dome Top: .204''; 17cc; 1 Valve Relief (Closed Chamber Design)Intake Valve Relief: N/AExhaust Valve Relief: N/A Top Landing Height: 0.310'' (No mini grooves on top land)Ring Grooves: 1/16'' Top; 1/16'' Middle; 3/16'' Bottom Lock Ring: LR984A Round WireGram Weight: 605/141Compression Ratio: 10.9:1 w/96.5cc Heads; 10.0:1 w/105cc Heads; 8.9:1 w/119cc Heads","features":["Solid Dome...","4.185'' Bore (+.090'' 396; +.060...","Use w/6.135'' Connecting Rod & 4.000'' Crank...","10.9:1/96.5cc; 10.0:1/105cc; 8.9:1/119cc Compression...","8/pkg. 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