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Old 11-05-2011, 02:03 PM
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383 or 400

i have a car that had a 400 sbc but it looks like i snapped the crank and threw a rod if fixable i would maybe fix it up but idk how much it would cost to get it machined or if its worth it and another idea i was tossing around was building a 383 stroker i have a 2000 350vortec and i know that i would get a lot more hp but how much wouild it cost me. if it is cheaper to rebuiold the 400 or to build a 383 i would thing about the same butt unsure please gimme some further info or opinionas on the subjecty and the proper way to build a 383 i was always told 400 crank .30 over machining and thats it of course new rings and pistons and what not but am i missing anything else and of course a cam will be installed

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Old 11-05-2011, 02:39 PM
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i have been told that once you bore a 400 they are more prone to breaking
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Old 11-05-2011, 11:11 PM
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False^^^^^^
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Old 11-05-2011, 11:33 PM
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Fix the 400... they are getter fairly rare. You should be able to find a used crank at a machine shop or crankshaft grinding company. Look at ebay....

I am not a Chevy guy but my old circle track buddies used 400's for years and I'm not aware of any strength issues after being bored.
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Old 11-06-2011, 07:08 AM
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I agree to building the 400,IF.......it's not tore up inside. If you broke a crank and threw a rod, things don't sound too promising. Building a 383 these days is a pretty simple, one phone call deal as far as parts go. There is just a lil bit of grinding to do on a 350 block that you should be able to do and find out about by doing a search.
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