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New Crank Or Old
Hello, Dont Have Alot Of $$$ To Spend On My 327 Sbc. Should I Buy A New Or Slightly Used Crank Or Have It Turned. Would I Loose A Hp. I Know I Would Have To Buy Diff. Bearings. Thanks
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Have it checked it may just need polishing. But if it needs turning then have it turned. No you will not lose any power. After you have it turned get the proper size main bearings and rod bearings.
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It has rust all over it
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The rust will disappear during the turning process.
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Mic. it up.........measure it with a micrometer, not a vernier. If it's got some life left in it i.e. measures .030" thou. or less undersize, get it checked for straightness and cracks first. If its a small journal it'll be steel, if it's a large journal it could be cast or steel.
If it all ckecks out OK as above and it's a small journal, have it ground (turned), then polish it up. If it's a Large Journal you've got more options. If it's a steel crank , go ahead as above. If it's cast crank you can go buy a steel crank or buy a 350 crank and turn it into a 350. Or you can replace your old "stuffed" crank with a budget 307 large journal cast crank which is the same stroke as your 327. Hope that helps you out with some options.
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