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11-13-2019, 05:26 PM | #1 |
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Join Date: Feb 2013
Location: GA
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Clearance specs for a 350 casting # 3970010 2 bolt?
I am looking for a resource for the 350 I have that gives main and rod bearing clearance specs needed for a rebuild. I have an engine that I pulled and stored a few years and with the help of a friend we were going to use some plati gauges and see where things are with this engine as we go through it.
Anyone have a resource for specs on this engine? So far Ive found this http://www.v8s-series.freeservers.com/sbc.htm |
11-13-2019, 05:46 PM | #2 |
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Join Date: Aug 2009
Location: Bowser
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Re: Clearance specs for a 350 casting # 3970010 2 bolt?
Lots of common specs there but nothing specific.
Try this link. https://www.enginelabs.com/engine-te...ng-clearances/ |
11-13-2019, 06:00 PM | #3 |
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Re: Clearance specs for a 350 casting # 3970010 2 bolt?
The standard spec for a stock 350 Chev is .0025". I'm happy with anything between .002 and .003. My last one in my truck was at .003 and I debated if it was too much but my oil pressure is always too high for my liking. I guess my engine must have a high performance oil pump but I can't tell by looking at them.
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11-14-2019, 12:17 PM | #4 | ||
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Join Date: Sep 2007
Location: Whidbey Island, Washington
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Re: Clearance specs for a 350 casting # 3970010 2 bolt?
That casting number is the most common 4" bore block that GM ever made.
Depending on your use, the clearance could change. High performance and racing engines usually use clearances a little loose to compensate for higher oil volume and pressures. For a stock rebuild I shoot for between .002 and .003, trying to get right around .0025. Gary
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