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Re: 010 block?
if it is a 10 20 block, then it is in fact a high nickle, and is in fact tough as nails.
The caddy big blocks are high nickle, and I've opened uip motors with 100,000 miles, and have little to no ridge at the top of the cylinder... not even enough to catch a fingernail. Even seen 2 100,000 mile cad motors, where you could see a faint reminance of the cross hatch from the honing process.
Ppl that work in machine shops will tell you they can HEAR the difference when they bore them out.
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