440 block- current prices

Engine, Trans & Driveline

  1. 6PKRTSE

    6PKRTSE Well-Known Member

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    I can vouch for that. When we were machining my Hemi block. It took days boring the cam tunnel out for 55MM roller cam bearings. Everyone commented on the quality of iron content. Even better than all of the aftermarket Dart Racing blocks we machine.
     
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    • Moms68

      Moms68 Well-Known Member

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      Update. The stars aligned and I am now the proud owner of a ‘69 standard bore short block. The seller couldn’t have been any better, and his price was fair, not crazy.

      Now the fun begins.
       
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      • POMONAMISSEL

        POMONAMISSEL Well-Known Member

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        thje motorhome 440 block you want is like this one if your going later 440's , these have extra thick cylinder walls they can be bored to 4.5 if needed . most can't go bigger than 4.38 the walls are much thinner . even the hp blocks . DSC00728.JPG DSC00729.JPG
         
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        • dvw

          dvw Well-Known Member

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          There isn't a factory Mopar block that will go 4.500" The closest you'll ever get is a sonic checked 400. They could go 4.400"
          Doug
           
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          • POMONAMISSEL

            POMONAMISSEL Well-Known Member

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            doug , the machinist did a sonic test all the cylinders , the block is .06 over now and he claimed we could go that big on this one , of course i'd want to stay on the smaller sized bore . racetec had no issues on pistons , and these lots of ring sizes in between 4.38 and 4.5 bores . my plan is the min bore on that block and 4.5 bryant crank 7.1 rods , alum stage 6 mw ported . mw intake to make 800 hp at 6500 rpm with monster torque .
             
          • 4406bbl

            4406bbl Well-Known Member

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            It would be nice to see that block with a middle frost plug out of it, it would have to be siamesed to go 4.500. I am not saying your machinist is wrong, just that it would be an odd block.
             
          • JG71B

            JG71B Well-Known Member

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            I just got a similar deal for a complete carb to tail shaft 400 4bbl motor out of a NYorker with 50k for well under a grand
             
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            • monaco66coupe

              monaco66coupe Well-Known Member

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              check the trans numbers, if it is a non lockup, that is a good transmssion.
               
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              • JG71B

                JG71B Well-Known Member

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                Non lock up!
                 
              • monaco66coupe

                monaco66coupe Well-Known Member

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                that is the high performance package, same as the police pkg.my 77 Cordoba has that, with the factory tow pkg and 9 1/4 rear diff/
                 
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                • dvw

                  dvw Well-Known Member

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                  Think about it. 4.500" is .180" overbore. Even if every spot sonic checked at .250", very unlikely. The walls would only be .160".
                  Doug
                   
                • toolmanmike

                  toolmanmike Moderator Staff Member FBBO Gold Member

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                  Mopar cast had high nickel content. That's why they lasted so long.
                   
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                  • JG71B

                    JG71B Well-Known Member

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                    Was not Dick Landy's go to 440 block from late 70s just for that reason?
                     
                  • theman440

                    theman440 Well-Known Member

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                    I've had a late 70's standard bore block listed locally for $200 - I can't even get an offer for it.
                     
                  • POMONAMISSEL

                    POMONAMISSEL Well-Known Member

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                    well i'm hoping it will clean up at 4.4 bore thats .02 over the 4.38 bore , walls thickness shown a sonic reading on the thrust side of the cylinder .212 , so 4.5 is not a go . hoping for a clean bore below 4.44 bore dia . thanks doug , i think that the machinist was looking to build another lower end when this one scattered .
                     
                  • Moms68

                    Moms68 Well-Known Member

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                    I dropped the block off at the machine shop to have it hot-tanked and magna fluxed. He’s really backed up but I’m in no rush.

                    It measures up to be a standard bore with a steel crank. Fingers crossed!

                    2F061031-606A-4332-B139-30D28E351F82.jpeg 3ECC1049-2456-4212-B51F-1844E6DCF8F3.jpeg
                     
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                    • Auggie56

                      Auggie56 FBBO Gold Member FBBO Gold Member

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                      I have been trying to PM but no luck you would you try a PM to me? I'd like to talk to you about the motorhome engine you have. Many thanks
                       
                    • Mark Barnes

                      Mark Barnes Well-Known Member

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                      Just looked on Craigslist here - complete 74 440- $1500. With 727, add $250. 400 std. Bore block for $1000. Ouch!
                       
                    • biomedtechguy

                      biomedtechguy Accelerati Rapidus Maximus FBBO Gold Member

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                      I certainly would count you in the few who I would trust to sell me a sonic checked block that was a good foundation for a stroker build.
                      Still, for my situation, looking for as close to 700 Ft Lbs of Torque and as wide a band in that range as possible, and a RPM limit that will have my combo somewhere in the 6XX HP range, I can justify in my mind going with the Bill Mitchell Products aluminum RB big bore block. I may want to have 150-200 shot of Nitrous available, and with a factory stock block, I would not be confident of it holding up.
                       
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