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Stock LS1 Crank

This is a discussion on Stock LS1 Crank within the Internal Engine forums, part of the LSx Technical Help Section category; What's the HP/TQ limitations on the stock crank?...

  1. #1
    Sold: LS1 '85 El Camino ls1camino's Avatar
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    2000 Grand Prix GTP
    2000 Trans Am WS6 M6

    Stock LS1 Crank

    What's the HP/TQ limitations on the stock crank?

  2. #2
    I Like It Stroked 99Ls1fever's Avatar
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    Artic White
    1999 Z28 408 Stroker M6

    At Borders Book store they carry a book entitled ls1/ls6 and according to this book General Motors states that the stock crank and stock rods are good to 550hp. Does not specifi torque.

  3. #3
    I Like It Stroked 99Ls1fever's Avatar
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    Artic White
    1999 Z28 408 Stroker M6

    Actually I retrack my previous statement, after going back and reading the book titled LS1/LS6 Performance written by Christopher P. Endres and I quote "the cast iron stock crankshaftis a very sturdy piece. It has proven reliable well past 600 hp." So, there is your awnser and he states that the stock connecting rods are durable past 500hp but not past 550hp.

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