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  1. O

    Help needed with head gaskets

    try flipping them over.
  2. O

    how much hp can a stock block hold?550?

    The block can go 9's and has been proven, but how long and who tunes it is another story. We have guys running mid 10's with a stock hypertectic piston block, others feel the need to swap pistons, others dont. But my question to you is... WHAT makes you want to go 26lbs of boost? That...
  3. O

    Why does the block split at high hp?

    Modular blocks are 6bolt mains, 4 on top and 2 on the side. LS1's are 8bolt mains if I am not mistaking(dont quote me, they might be 6 as well though). ZERO balance and what not have nothing to do with the blocks performance. The block ITSELF is the weak point regardless of what...
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