CHEVROLET Engines & Components

Gen. 4 BB Chevy Forged Steel Crank, 4.250 stroke, Two Piece Rear Seal, Req's Narrowed Rod Bearings, Lightened holes, Nitride, 6.385 in. Rod

Part Number: SUM-BBC425063851

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Estimated Ship Date: Today

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Chevy BB 6.135" - Boost Line

Part Number: BLN-BC6135-990

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Estimated Ship Date: Aug 18, 2025 if ordered today

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Chevy SB 5.700" Stroker - Boost Line

Part Number: BLN-SC5700-927

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Estimated Ship Date: Aug 18, 2025 if ordered today

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SB Chevy Forged Steel crankshaft, 4.000 Stroke, 400 Mains, 2 Piece Rear Seal, Req. Narrowed Rod Bearings, Lightened, Nitride, 6.000 in. Rod

Part Number: SUM-SBC4004000

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Cylinder Head, 315cc BBC, Aluminum, 120cc Chamber, 315cc Runner, 2.250 in. Intake Valve, 1.880 in. Exhaust Valve, 0.675 in. Max Lift, Chevy, Each

Part Number: HPE-HPBBC315

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Estimated Ship Date: Oct 27, 2025 if ordered today

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