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383 or 402 0r 408??????

This is a discussion on 383 or 402 0r 408?????? within the General Help forums, part of the LSx Technical Help Section category; which 1 u rather go wid for new block...383-402-408 or any other suggestions???? B.T.W....i got 02 z28 A4....wanna new block ...

  1. #1
    Junior Member 8urstang's Avatar
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    383 or 402 0r 408??????

    which 1 u rather go wid for new block...383-402-408 or any other suggestions????
    B.T.W....i got 02 z28 A4....wanna new block for it......help me out guys..

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    Veteran Blackbird WS6's Avatar
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    408 IMO....... plus the 383 is a waste of money just my .02

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    Junior Member 8urstang's Avatar
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    ............

    Any1 knw anythin about the zl402 from slp???? any good?

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    Veteran Blackbird WS6's Avatar
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    did you look at texas-speed.com they have some good setups take a look if you want

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    Junior Member 8urstang's Avatar
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    Quote Originally Posted by Blackbird-WS6 View Post
    did you look at texas-speed.com they have some good setups take a look if you want
    yea....ive been lookn at tsp..but wannna to see which 1 would be good block for right amount of money and good power...

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    it depends, what is ur goal with the car?

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    Junior Member 8urstang's Avatar
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    Quote Originally Posted by JwMonE99 View Post
    it depends, what is ur goal with the car?
    wanna get hp numbers n high 4Hundreds....want the car to stick around for awhile thats y i wanna to get new block.....im thinkn about goin lsx wayy

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    Slow'er'Ass Mr. Luos's Avatar
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    Stay away from the SLP shortblocks.

    Heard more bad than good.
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    Member TROYWS6X's Avatar
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    the old adage is "there's no substitute for cubic inches", so 408.

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    depends on what your wallet has and what you want. you can have 500 rwhp with a 346 all motor

    you can have 425rwhp with a 408. it all depends on your budget. alot of ppl spend money on strokers and dont have the rest of money for supporting mods.

    402 and 408 same motor with same performance. .030 isnt going to net much if any difference in performance. 383is a decent build and depending if you use your 5.7 block its still aluminum or if you chose to use a 4.8/5.3 block then youl have a iron block 383

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    Junior Member 8urstang's Avatar
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    Quote Originally Posted by Quik View Post
    depends on what your wallet has and what you want. you can have 500 rwhp with a 346 all motor

    you can have 425rwhp with a 408. it all depends on your budget. alot of ppl spend money on strokers and dont have the rest of money for supporting mods.

    402 and 408 same motor with same performance. .030 isnt going to net much if any difference in performance. 383is a decent build and depending if you use your 5.7 block its still aluminum or if you chose to use a 4.8/5.3 block then youl have a iron block 383
    "you can have 500 rwhp with a 346 all motor"...wat kinda money or mods r we lookin at for that kinda numbers n 346???

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by 8urstang View Post
    "you can have 500 rwhp with a 346 all motor"...wat kinda money or mods r we lookin at for that kinda numbers n 346???
    Not street friendly ones.


    500RWHP with an N/A 346 will be high strung.
    Can it be done? Of course, but I would prefer 500RWHP from the stroker.
    Again, back to available funds....

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    I am a fan of the 383.
    you can make high 400s no problem.
    But are you looking for a dyno queen or is there a certain 1/4 mile time your looking for?
    What is ur budget?

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by JwMonE99 View Post
    I am a fan of the 383.
    LT1....yes.
    LSx....not so much. Wrist pin clearance issues have been had in the past.

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    Oh yea very true.
    lt1>ls1 ; )

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    Quote Originally Posted by 8urstang View Post
    "you can have 500 rwhp with a 346 all motor"...wat kinda money or mods r we lookin at for that kinda numbers n 346???
    good set of heads, ported fast 90 with a good cam, 1 7/8 headers, true duals dialed tune, compression. its nothing new to do. the TQ is what lacks some but its been done.

    here is a link to a 502rwhp build on a 346
    http://www.ls1tech.com/forums/dynamo...02rwhp-na.html
    Last edited by Quik; 03-14-2009 at 10:59 PM.

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    Junior Member 8urstang's Avatar
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    Quote Originally Posted by JwMonE99 View Post
    I am a fan of the 383.
    you can make high 400s no problem.
    But are you looking for a dyno queen or is there a certain 1/4 mile time your looking for?
    What is ur budget?
    dyno queen.....budget 5 to 6k....

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    Quote Originally Posted by TROYWS6X View Post
    the old adage is "there's no substitute for cubic inches", so 408.
    how about "theres no replacement for displacement"

    flows a little better

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by 8urstang View Post
    dyno queen.....budget 5 to 6k....
    Dyno queen's aren't much fun.....

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