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To build or not to build....350

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ftn96, Oct 28, 2001.

  1. ftn96

    ftn96 1/2 ton status

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    Got a guy thats giving me a "complete" running 350 w/ unknown miles and past history or than I road in the burb that it was in and it ran fine.
    I pulled the casting number, 3970014...which looks to be a mid 70's 2 or 4 bolt main. I was wondering if you think I should take it since its free or spend a little extra and try to find a block thats a bit newer? Dont get me wrong Im still taking the motor for the heads adn all the other extras. Just wondering about the block. Im just not sure I want a motor thats been possibly beat to death for close to 20 years, vs. one thats been beat for less years.
    And whats all the hype about more nickle in some versions?
    All info is appreciated!!![​IMG]

    Surgeon General's Warning:
    Viagra and steroids may be harmful to your spouse![​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     
  2. tori89k5

    tori89k5 1/2 ton status

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    Take the engine dont sweat it. You could have a new P.O.S. just as easy as an old P.O.S. Pull the free one apart and make a judgement call. If its been beat you will be able to tell. Or just put it in the way it is and run it, and enjoy the best engine ever made!!! More Nickle is just a "harder" block. Which of course means more available wear. But you can F--- up a Bi-metal block too, so like i say.... dont sweat it. Use and abuse your new motor, Then build it to the hilt !!!!

    1990 K5 4" lift, 33's, 3.73's Raptor Tranny and Velvet Rides....
     
  3. chevyracing

    chevyracing 1/2 ton status

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    Hard to say til you open it up and see what you have. I have a late 60's small block that I stroked to 383 and it strolls. I have well over 100,000 miles on it since I rebuilt it and I will still put it up against most of the newer ones out there.

    John

    Like to go sloppin' 'round in da mud in a rapid fashion....=) [​IMG]

    <a target="_blank" href=http://community.webshots.com/user/chevyracing>http://community.webshots.com/user/chevyracing</a>
     
  4. MUDNUTT

    MUDNUTT 1/2 ton status

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    take it. you said yourself its free! when chevyracing and i built my small block i went thru 2 cracked blocks(thank god i got both of those for free) before i ended up buying the 3rd from my machinest. one of those first blocks had usable parts witch(spelling) turned out to be a steel crank and o rods. take it, you may get lucky w/ whats inside as i did
    deck

    <font color=blue>DRIVE IT LIKE YOU STOLE IT[​IMG]
    <font color=red>PROUD TO BE AMERICAN[​IMG]
     
  5. CrazeeBush

    CrazeeBush 1/2 ton status

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    B, are you insane? Why would you want such an old,used, and abused block? GIve it to me! [​IMG] I think that's the only way to remedy this dilema. hehe


    -BuSH
    '83 K5 Blazer
    '98 Monte Carlo z34
     
  6. CaptCrunch

    CaptCrunch 1/2 ton status

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    Well like everyone has said... if it is free then take it... (free is good even if it is junk [​IMG]). Depending what you want to do for a motor application with will decide wether to use it or not. Most of the 2-bolt main blocks are perfectly fine for mildly modifed motors (N/A... around 400 hp). 4 bolts mains would yield you a bit more strength for a stroker, mega compression, and/or forced induction. Everyone has a different opinion of how long a 2-bolt main will last but I seen more then a few built to da Hilt 2-blot main small blocks. It all depends on what mods you plan to do to it and how you plan to run it.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://coloradok5.com/gallery/captcrunch>http://coloradok5.com/gallery/captcrunch</a>
     
  7. shawnboy

    shawnboy 1/2 ton status

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    Gotta agree with the boys, the key word is "free". Take it and run, you never know it might have some goodies you'll need.
    Shawnboy.

    If you are having too much fun it's probably illegal.
     
  8. ftn96

    ftn96 1/2 ton status

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    I was mainly not wanting to have to deal with the hassle or riding myself of it if its crap. However, I will gain the heads off of it as well as some other parts, so
    I think I might take it. [​IMG]

    Surgeon General's Warning:
    Viagra and steroids may be harmful to your spouse![​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     

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