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downsides

  1. GN7 On the Dyno
    guys, are the 400 blocks pretty weak? only thing i can remember about them is the cooling issue, but that's a non issue in a jetboat. what were the other downsides? i've got a nice block, just didn't know if its worth using of if i'm gonna have to make this a 2yr project, buy a lil m block:)sphss
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