thin cylinder wall engines: the answer is.....

[USMC1968]

A while ago I posted a thread inquiring about thin cylinder walls on the 440. My plans of building a strong blown motor brought about great concern to this possible flaw. I got a few replies on the subject, and they were very helpful. Me being the "have to be sure" person that I am, had to do some more research on the topic. So if anyone else is curious about this subject I found a link that better answers that question and a few more in greater depth. So if you're interested, here it is http://www.arengineering.com/articles/sonicbig.html

Enjoy, and thanks to everyone who replied to my previous cry for help.

 

[340sFastback]

Good article. Thanks for posting.

 

[daredevil]

very interesting

 

[Jims71duster]

HP books,,Big block mopar performane by chuck senatore,,,,,,,,,Three different 440 blocks where made,,,casting dates from mid 65 to mid 68 where the first series and had a thick wall design,,,,,next series was mid 68 through 75 where the same as the earlier blocks but has cast in ribs for strenght,,these are the most desirable,,,,,,,,the third series was from 76 to 78 these are a thin wall design but still have the strenght ribs of the previous designthese can only be bored to 30 over and still have the same bottom end strength of the others,,,,,,,,,the 400's have simular dates and characteristics as the 440's

 

[340sFastback]

The Mopar book is wrong. The later blocks were not thin wall.

 

[Tadjou]

Here is a very good read on the subject.

http://www.440source.com/blockinfo.htm

 

[moper]

Yup. That is the article that referred me to the PR-8 when I was shopping. And the conclusions are accurrate.

 

[grumpuscreature]

This should be a sticky in the new big block section. Extremely well done guys.:thumbrig: