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Mod | | | Forums66 Topics128,074 Posts1,055,914 Members48,429 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#67339 10/21/2006 5:33 PM | Joined: Oct 2006 Posts: 1 Junior Member | | Junior Member Joined: Oct 2006 Posts: 1 | What is the minimum wall thickness allowed after boring 4.000" for the 327 pistons? Or what it the minimum wall in a standard 250 cylinder bore of 3.875" that will allow boring to 4.000".? I have access to an ultrasonic thickness meter and could perform the test myself for screening blocks. | | |
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