engine tech

I'm building a long rod stroker set up and wanted to list the build and hopefully someone out there will have a similar set up and can tell me what to expect as for as hp, and overall performance. I already have a good idea what to expect since the car was very quick before the build, OLD BUILD...

Im trying to identify a crank that was pulled out of a built gn. its a steel crank with "231 3400" on it, so its stock stroke, also standard size journals. it looks like a pretty nice crank so I'm trying to find the brand. has an ID number 40142 stamped on the flywheel flange and M040142 on one...