picked up a 340 long block w/out specs

Small Block Mopar Engine

  1. JBurch

    JBurch Well-Known Member

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    You don't have to pull both heads, pull one and it will tell you what you need to know.......I'll get roasted for this but if it has not gone thru a thermal cycle prior to cracking it open, I'd reuse the head gasket
     
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    • Garrett Ellison

      Garrett Ellison Amateur driver on public roadway, do not imitate..

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      If the head gasket comes off whole without peeling, I wouldn’t have a problem with it. One thing about a blown small block. It really should have a set of head studs. If it was assembled with regular head bolts, I would be weary of the build.
       
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      • Wyrmrider

        Wyrmrider Well-Known Member

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        What YR said works but use the alcohol not the solvent
        alcohol absorbed water ACE hardware has 99% denatured I use to take heat sinks off cpus
        Then WD-40 that's what WD-40 was made for- it's not really a lube
         
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        • RustyRatRod

          RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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          Come on people, we're talking about the price of a gasket set here to see what parts are there and in what condition. I mean seriously, that's the best option.
           
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          • 72bluNblu

            72bluNblu FABO Gold Member FABO Gold Member

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            Yeah I don't know why anyone would do anything different in this particular case.

            Like I said earlier, I might do it different if it was advertised as just a stock-ish rebuild and it looked the part. Check some casting numbers, maybe take a peak with a borescope. But in that case I'm assuming its a relatively low compression engine with cast parts and I'm not expecting anything. And even in that case, if I looked in there with a borescope and saw valve reliefs the heads are coming off, because now I know it's not just a stock rebuild with factory replacement stuff.

            For an engine advertised as a supercharged race engine? I'm gonna check everything if I don't know the builder or the parts. Especially before I lay out dough for a supercharger. Even small discrepancies in the build could be catastrophic when the boost starts in.
             
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            • nixrsix

              nixrsix Member

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              Its settled, I shall crack her open!!! I'll post what I fond out this weekend! Thanks for all the great replies!!!
               
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              • justinp61

                justinp61 Well-Known Member

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                Smart move IMHO.
                 
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