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Boring a 302 engine 60 over can increase its displacement and power, but it may also compromise engine longevity and reliability for everyday use. Typically, a 30 or 40 over bore is more common for street applications, as it maintains better wall thickness and cooling characteristics. If you're considering this modification, ensure that the engine is properly built with quality components to handle the increased stress. Ultimately, it depends on your driving habits and how much power you desire versus reliability.

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3w ago

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How many cubic inches is 302 small block bored 030 over?

A ford 302/5.0 will be 306ci if bored .030 (4.030" bore)


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Ok not sure on what HP your 306 would make. My Ford 302 Bored .30 over (306) is making 397 WHP with 7.5 lbs of Boost from a Procharger. Mustang 5.0 V8 302 1989.


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Yes, a Ford 302 block can typically be bored 0.060 inches over, which increases its displacement and can improve performance. However, the feasibility of this depends on the specific block's condition and wall thickness, as excessive boring may compromise its structural integrity. It's important to consult with a professional machinist to assess the block's suitability for such modifications.


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What is the horsepower 302 bored 60 over with 11 to 1 compression?

As stated before it will be 310ci. The compression will determine the hp out as well as heads, a major factor, cam, intake setup. U didnt spec if it was efi or carb. Hope this helps post again with your specs. im currently building a 302 as we speak so feel free to ask anything. Randy