Hi. Opened up my daughter's modified 2.8L Blazer ('85). I want to replace the crank and rod bearings but saw these holes in the crank area (pls see pic). Some research shows they might be ok but want to check before I continue with this rebuild. This truck has a Holley 4bbl, headers, RV cam and some big-ish rubber and I'd really like to help my girl out with her truck. Any help appreciated. Thanks.
Tom
Tom