Absolutely! Hell, even if it won't take the overbore, you can take a basically free teener (or 273 for that matter) block, sleeve it to 4 or 4.040 (or more!) and have a relatively fresh block ready to go for less than some people are asking for a roached 340 block that's been sitting in their garden shed for forty years that may still need all that work (and more) done to it anyway...