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I Have A Friend Thats Selling Me A 306 Block With An E-cam, It Has 30,000-40,000 Miles On Rebuild For $600. Is It A Good Deal Or No??? He Said He Recommends To Put New Piston Rings. But I Dont Know What Pistons Rings To Buy Since It A 306 And Not A 302? Does Anyone Know What Piston Ring Size I Should Get?
 

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Yes. A 306 is a 302 bored .030 over. Stock bore is 4.000". So since its bored .030 over to create the 306, just add .030 to 4". So its simple...Buy rings for 4.030" Pistons.
 

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Yup, and yup. Sounds like a good deal and you'll get rings for 4.030 pistons.
 
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