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  1. Raptor 660 Modifications
    I'm going to start my build this weekend. I was looking at 686cc with 11:1 compression. Stg 1 cam. I hear that the stock rod is weak. My question is.... What puts more stress on the rod? I don't want to change mine because I'm kinda broke. I only drag race on sand and hit the trails. Is it an...
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