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I have a place to do it (Weston Machine)

That is who I used. Highly recommend that shop. They will get it done right, and turn it around quickly. No 3 month wait like some shops...



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My 511 CID low deck (4.375 x 4.250 stroke) has aluminum main caps and enlarged to 440 size. I run a Callies crank. This block has almost 800 passes now. I was so happy back in the winter of 2010-2011 I did the same main change to my spare 400 block.



Yes! I copied your short block plans... good to hear no issues my stuff has been on the shelf since 2006... Did you have to notch the block at all and what kind of oil system do you run...
I was suposed to drop the block of today but Snow is in the way...