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Old 05-24-2010, 07:54 PM
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2-Bolt rebuild question

Just starting a rebuild and am considered a beginner. I have a '79 350 2-bolt main block with casting number 3970010 and 010 at the timing cover. I am looking for a mild street/bracket build around 350-400hp and max 5500-6000rpm. My question is with the bottom rotating assembly.
I would like to reuse the stock crank once it all checks out at the machine shop and am wondering what to do with the main caps. Should or can I reuse the main caps or get 3 new centre ones or all 5. I will definatly be using ARP studs. The only caps I found are "angled" and I am pretty sure mine are straight. Does anyone have part numbers for me to look at or any other recommendations.

Thanks

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Old 05-24-2010, 08:06 PM
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2 bolt mains is plenty strong for that kind of power
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Old 05-24-2010, 08:25 PM
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I agree. Just go with what you have. I would not even spend the money on the studs.
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Old 05-24-2010, 09:00 PM
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Another question, since I have never taken a block to get machined, need a little advice as what to get done. Was going to get it decked (dont know how much or how to tell), bored 0.030 over (should clean it up) is getting the mains aligned honed worth it? Anything else I am missing.

So dont bother with the mains? Just reuse them?

Thanks again
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Old 05-24-2010, 11:00 PM
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if they are the same mian caps that came with that motor,then no you dont haft to get it aligned bored. besides when you do get one aligned bored the factory timing chain and rear seal may not work. in other words you would need a shorter timing chain and thicker seal. and a 2 bolt block will work fine for that build up although i would spend the extra money on the ARP studs, but to each his on.
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Old 05-25-2010, 08:30 AM
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Should I put a windage tray in this build? Not 100% what it does. Keep the oil from splashing and reducing drag while directing it better to the vitals???
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Old 05-25-2010, 11:12 AM
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personally i would spent the money on the ARP fasteners, you will be just fine with a 2 bolt for what you are looking for and you would also do just fine with a stock style stamped steel pan
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