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bore and stroke question? ws-6

This is a discussion on bore and stroke question? ws-6 within the Internal Engine forums, part of the LSx Technical Help Section category; can you bore a stock ls-1 block to a 383 and still use stock heads? or what would you need ...

  1. #1

    bore and stroke question? ws-6

    can you bore a stock ls-1 block to a 383 and still use stock heads?

    or what would you need to do this?

    thanks, george

  2. #2
    Slow'er'Ass Mr. Luos's Avatar
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    Aug 2005
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    You can't just bore the LS1 to a 383. Walls are too thin. It would need re-sleeved.
    You can put the stock heads on it though.
    2008 Trailblazer SS
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  3. #3
    From what i read, you dont need to bore at all. They use stock piston size for these strokers and a 400 crank.

  4. #4
    Blown, Stroked, & Sprayed

    Ed Blown Vert's Avatar
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    Aug 1999
    San Diego, Ca

    383 Procharged & N20 Vert

    Changing the crank to a 4" stroke will get you a 383. And yes you can use the stock heads. But you should get better flowing ones.
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