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What is the Compresstion ratio for 1981 305?

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Anonymous

∙ 16y ago
Updated: 9/15/2023

Advertised Compression is: 2-barrel carburetor engine is--8.5:1

The 4-barrel engine is---9.2:1

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Wiki User

∙ 16y ago
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What is the normal compression for a 1981 Chevy 305?

The normal compression ratio for a 1981 Chevy 305 engine is typically around 8.0:1 to 8.5:1, depending on the specific model and configuration. This ratio can vary slightly based on factors such as factory specifications and any modifications made to the engine. It's important to check the specific engine code and configuration for the most accurate information.


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