Stroking the crankshaft into a maximum 81mm will hold the RPM functionality intact. Bores is usually brought out to 83mm, but try to help keep it less than 82.5mm. There is no need to have with the Components Atlantic crankshaft. Reject blocks that can will need 83mm to wash up, https://dallasdkwai.ja-blog.com/26782725/the-best-side-of-blacktop-20v-4age