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408 piston questions

This is a discussion on 408 piston questions within the Internal Engine forums, part of the LSx Technical Help Section category; i'm looking at getting pistons for my iron lq9 stroker, boring it .030 over, is -2cc valve reliefs gonna be ...

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    The Masterpiece Qwk94Z28's Avatar
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    1998 Z28-408 l92 stroker

    408 piston questions

    i'm looking at getting pistons for my iron lq9 stroker, boring it .030 over, is -2cc valve reliefs gonna be enough for the l92 heads? i was told no,what should i go with when i order my pistons since i plan on doing it in the next few days.

    i want a compression ratio thats gonna be ok to run on 94 octane so is 11:1 too much, cause i've seen 4 cylinders with 10.5 stock running pump gas

    i also thought of boring the block .060 over for more cubes but not 100% sure yet if i should

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    Senior Member mrr23's Avatar
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    going .060 over will bring you to a 415. if you ever need to rebuild the motor, you won't be able to bore the block again.

    i use the wiseco k394a3 pistons with a -8cc dish. with my heads at 62cc, i'm at 11.3:1 compression and run 91 octane everyday.

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    The Masterpiece Qwk94Z28's Avatar
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    1998 Z28-408 l92 stroker

    Quote Originally Posted by mrr23 View Post
    going .060 over will bring you to a 415. if you ever need to rebuild the motor, you won't be able to bore the block again.

    i use the wiseco k394a3 pistons with a -8cc dish. with my heads at 62cc, i'm at 11.3:1 compression and run 91 octane everyday.
    yeah i've decided with just a .030 over piston, found a deal on a crank and rods first so the pistons will have to wait about 2 weeks,

    how much did your wiseco's cost you?

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    Slow'er'Ass Mr. Luos's Avatar
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    Senior Member mrr23's Avatar
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    Quote Originally Posted by Qwk94Z28 View Post
    yeah i've decided with just a .030 over piston, found a deal on a crank and rods first so the pistons will have to wait about 2 weeks,

    how much did your wiseco's cost you?
    $800 with rings.

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