Thread: 307 bored ,30 over

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can you tell me what a307 bored .30 over would be, and is using 305 heads work ok thanks, also eldbrock performer 2 intake and cam, 600.carb

.030 overbore will only give you a couple of cubes, you'll never notice the difference.

030 if it well clean up there just get you a hole that you hope the rings seal up better then a whip out bore if your asking for hp hard to say would be better then stock

Originally Posted by blackchevee3

can you tell me what a307 bored .30 over would be, and is using 305 heads work ok thanks, also eldbrock performer 2 intake and cam, 600.carb

That will be a 311ci and the #416 or #601 1.84in / 1.50ex 55-58cc 305 Heads will work well on a 307+30 over build . Just check them Heads well for cracks .

you could get a set of 1.94 1.6 heads