Originally Posted by 1slow01Z71

The older blocks had bad core shift and some couldnt be bored .06 over. Its a good idea to get the blocked checked after boring it that much. Ive said it before, if you want to get a long life out of a stroker go with an aluminum block. The cylinder skirts are deeper and stabilize the piston more, therefore less oil burning. When/if I do another stroker it will be out of an LS3 block.

Originally Posted by dug

supposedly its possible to bore out to 4.080 if you sonic testing the block.

Originally Posted by stock48

I feel the same way on the longer sleeves.

It's allways a good idea to sonic test due to possible core shift, and inconsistant castings. 2 out of the last 3 iron 6.0L blocks I sonic tested would easily take a +.100'' over bore frr a NA application.