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boreing LQ9

This is a discussion on boreing LQ9 within the Internal Engine forums, part of the LSx Technical Help Section category; Hi guys id like 2 no whats the most u can bore a LQ9 and if u go .30 over ...

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    boreing LQ9

    Hi guys id like 2 no whats the most u can bore a LQ9 and if u go .30 over what will the comp ratio be with all stock internals and stock head gaskets just bored .30 and also a LQ9 is a 364 stock what size will it be .30 over

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    What I do? SHines-IT's Avatar
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    I know people make them into 408's.

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    Quote Originally Posted by SHines-IT View Post
    I know people make them into 408's.
    Yea that's with a 4.inch crank I'm talkin about a stock LQ9 bored .30 over

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    Quote Originally Posted by kingcamaro View Post
    Hi guys id like 2 no whats the most u can bore a LQ9 and if u go .30 over what will the comp ratio be with all stock internals and stock head gaskets just bored .30 and also a LQ9 is a 364 stock what size will it be .30 over
    You cant use stock pistons if your boring it .030 over. .030 over seems to be the norm people will bore those blocks out to. But the true way to know is paying to have the block sonic tested. A 364 bored .030 over would be a 370. Throw a 4" crank and have a 408ci. With no change in bore, it would be a 402.

    4" bore x 4" crank = 402

    4" bore x 4" crank + .030 over = 408

    BTW, its .030" not .30"

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