Stroking the crankshaft to some highest 81mm will retain the RPM capability intact. Bores could be introduced out to 83mm, but test to maintain it under 82.5mm. There is not any require to the Method Atlantic crankshaft. Reject blocks that should need 83mm to clean up, for sure There exists https://4age-blacktop-engine-for59258.liberty-blog.com/26842178/a-review-of-4age-20v-itb