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Chevrolet big block, open chamber high compression
Multiple options
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Item number:
99546
Application:
Recommended for applications using nitrous (250HP shot) / not recommended for turbo applications. Image is a representation of this item. Actual item may vary.
Includes:
Complete set of pistons, locks, 5115 series straight wall pins & oil rail spacers (as required).
Specifications:
Piston top type: dome top. Bore: 4.280" to 4.625". Stroke: 4.760" to 4.250". Rod length: 6.135" to 6.535". Compression height: 1.120" to 1.768". Compression ratio (109.00): 15.40 Compression ratio (118.00): 13.70 Compression ratio (124.00): 12.80 Dome volume: 45.00 to 51.00. Dome height: .500" to .700". Gram weight: 529 to 618. Rings: 1/16", 1/16", 3/16". Ring set: CR9190. Rings included: no. Oil rail spacer: ORS-425. Pin type: 5115 straight wall. Pin diameter: .990". Pin length: 2.930". Pin wall: .150". Pin weight: 146 grams. Pin buttons: not included. Block height: 9.800". Top land: .282". Second land: .125". Oil land: .070". Deck thickness: .200". Intake cutter: 2.400". Exhaust cutter: slant. Intake depth: .320". Exhaust depth: .120" up. Note: Compression ratio based on .050 piston to head clearance (deck & gasket combined).
