The first sentence in the Relieving the Block section Ron Halloran's book
NOSTALGIA-Rebuilding and Modifying the Flathead V8 (Page 39) says:
"Relieving the block is usually reserved for racing engines." He then goes on the explain.
"The reason an engine needs relieving is to produce power at high RPM's and that's not where a street engine spends much of its time." Also, read all of this:
http://www.flatheadv8.org/rumblest/intro.htm and
http://www.jalopyjournal.com/forum/t...eading.770895/
Here's a couple of good articles:
http://www.hotrod.com/how-to/engine/...lathead-myths/
and
http://www.jalopyjournal.com/forum/t...inions.420484/