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How to Replace the Optispark Distributor on your LT1 5.7 Engine
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LT1 Swap to LS 411 pcm. No need for optispark easy and cheap!
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1993 Corvette LT1 Optispark and Water Pump Replacement. Misfire fix!
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LT1 optispark Replacment Seals, Spark plugs & wires 1993 - 1997 chevrolet camaro Z28
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LT1 C4 Corvette Performance Opti Spark Distributor Replacement!
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Did The GM Optispark Kill These LT1 Pontiac WS6 Ram Air F Bodies?
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