i know a sbc 350 mtr is original-- bored out 10-1 makes it a 355--- is 239 original flatehad ? if its bored out what that make it? thanks
10-1 is not an overbore. 239 is stock cid for later flathead V8's Displacement after boring and/or stroking would depend on the amount of overbore or stroke. Sent from my DROID device using the TJJ mobile app
DMO: Lots of details to be discovered on this subject: '49 up Merc is 255ci. Earlier flatheads....221 ci. Carter gave you a big tip also...depends on what happens at the machine shop during rebuild. I have a book by Frank Oddo that gives lots!!! of information and there are many others. Do lots of research if you are considering building or re-building a flathead. Tim
Lots of charts on the internet that will show you what any given bore and stroke will give. Anywhere from 221 CI to 304 CI unless you do something "heroic".
The Jalopy Journal
