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Thread: so my rotating asembly is trashed

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  1. #1
    Senior Member blkp42e's Avatar
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    so my rotating asembly is trashed

    i took my bottom end to the machine shop to get checked after i ruined my head. looks like my 3 and 7 piston looks like they got hit with a belt sander. so i am going bigger and better. do you guys think a 347 is too much volume for a s-trim, or should i stick with a 331?

    also, and short blocks for trick flow heads for sale are considered. thanks
    Last edited by blkp42e; 02-16-2008 at 03:32 AM.

  2. #2
    ILLBEATU fastfox91's Avatar
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    what block are u gonna use?

  3. #3
    Senior Member blkp42e's Avatar
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    i was told my stock block still looks good with a little boring and a main support for extra help

  4. #4
    ILLBEATU fastfox91's Avatar
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    this just my opionion i would go with the 331 cause of the added side wall load of a 347 on a stock block every little bit helps and with boost on top of that. as for the s trim pulley it up and it will do fine i went 10.6 at 132 with a s trim at beaver. at a better track i know it had 10.40 in if not faster. again just my .02

  5. #5
    Big Daddy gmkillr's Avatar
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    Drop Jay an email, but I can gaurentee that he will say 347, as will I. Dont believe the hype behine the "supposed" issues of the 347 as stated above.
    The ONLY reason to build a 331 over a 347 is if your running in a cubic inch limited class for racing. Im in the process of building a Mexican block 347 as we speak.
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  6. #6
    Senior Member wick's Avatar
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    This is where I am now. I would not waste time and money on a stroker unless you are going aftermarket with the block. Having a blower and a stroker, you WILL be cracking the block. It wont hold together. So, in my opinion Chad, save for a dart or a boss block.
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  7. #7
    Member Mark Aubele's Avatar
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    Quote Originally Posted by wick View Post
    This is where I am now. I would not waste time and money on a stroker unless you are going aftermarket with the block. Having a blower and a stroker, you WILL be cracking the block. It wont hold together. So, in my opinion Chad, save for a dart or a boss block.
    I agree. Some people get more time than others, but with a t-trim and about 14 lbs. of boost with a gt40p mild h/c/i stock short block, mine lasted 10 laps on a road course. Stock block isn't very strong, no matter how many girdles you bolt to it.

  8. #8
    Senior Member Rodeheaver's's Avatar
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    Quote Originally Posted by gmkillr View Post
    Drop Jay an email, but I can gaurentee that he will say 347, as will I. Dont believe the hype behine the "supposed" issues of the 347 as stated above.
    The ONLY reason to build a 331 over a 347 is if your running in a cubic inch limited class for racing. Im in the process of building a Mexican block 347 as we speak.
    mexican blocks are the SAME as sportsman blocks, i have compared them side by side before
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  9. #9
    Senior Member blkp42e's Avatar
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    until i can scrape up the cash for a new bottom end, i think im just going to pick up a few hundred dollar bottom end to hold me over.

  10. #10
    Senior Member wick's Avatar
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    Quote Originally Posted by blkp42e View Post
    until i can scrape up the cash for a new bottom end, i think im just going to pick up a few hundred dollar bottom end to hold me over.

    I have a 306 sitting here.
    Rob
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  11. #11
    Senior Member blkp42e's Avatar
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    ill let you know.
    Last edited by blkp42e; 02-17-2008 at 12:04 AM.

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