Something tells me that you're probably not going to cram a 4BT into a Vette without a dry sump oil system, a huge cowl bubble on the hood, or both.
V8 engines are wide, but quite a bit shorter than straight-up inline engines. The 4BT is straight up, has a pretty long stroke and long rods, and was not designed with anything less than a medium duty truck package in mind.
If you could install it at a 30-45 degree angle a la /6 and make it work it might fit, but good luck getting the oil to drain properly and the cooling system to burp air out.
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