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Old 07-26-2010, 08:43 PM   #30
Pete
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Join Date: May 2010
Location: Wa.
Posts: 5,409
Default Re: Boring a flathead

Quote:
Originally Posted by jdl View Post
Pete, what is the minimum cyl wall thickness for a street engine and still run cool? I know there are variables. your opinion?
A street engine should run ice cold compared to a race engine...Relatively speaking. I try to have .090 walls to start with on a 3 3/8 +.030 bore.
I ran 315 ci engines on the street many times and never had cooling problems....The big thing is to have the block acid stripped so you have bare metal to start with in the water jackets...Rust and scale are great insulators. A radiator that is clean inside helps too.
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