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bored out 4.3

06-01-2005, 10:07 PM
whats the liter of a 4.3 bored 30 over? how much hp may this make?

06-02-2005, 06:43 AM
Very little on just boring out. You'd get more with a full professional port and polish.

06-02-2005, 09:40 AM
4.3L bored .030 over will be 4.37 Liter.
4.3L = 262.5 CID. 4.37L= 266.6 CID

The practice of "boring .030 over" is not for the purpose of increasing displacement. It is done to true up the cylinder walls and provide a good surface for the new rings to slide on.

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