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LS1 Information 350 Horsepower
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Block Part Number: |
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12561166 |
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Block Type: |
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Cast aluminum with 6-bolt, cross-bolted main caps |
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Bore x stroke (in) |
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3.90 x 3.62 (99 x 92 mm) |
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Camshaft duration (@.050 in) |
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200 degree intake / 203 degree exhaust
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Camshaft lift (in): |
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.500 intake / .500 exhaust |
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Camshaft Part Number: |
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12561721 |
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Camshaft type: |
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Hydraulic roller |
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Compression ratio: |
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10.25:1 |
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Connecting Rod Part Number: |
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12568734 |
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Connecting rods Type: |
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Powdered metal steel |
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Crankshaft Part Number: |
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89017522 |
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Crankshaft Type: |
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Nodular iron |
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Cylinder head Part Number: |
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12559855 |
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Cylinder head Type: |
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Aluminum, symmetrical port |
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Displacement (cu in): |
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346 (5.7L) |
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Engine type: |
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LS Series small-block V-8 |
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Piston Part Number: |
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88984245 |
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Pistons Type: |
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Hypereutectic aluminum |
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Recommended fuel: |
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92 octane |
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Rocker arms Part Number: |
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10214664 |
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Rocker arms Type: |
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Investment cast, roller trunnion |
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Valve size (in): |
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2.00 intake / 1.55 exhaust |
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