340 For street duty

if the crank is bad build a mild stroker engine. to keep it streetable you may need dish pistons with the X heads, but as long as you have a good block and heads to start with you can really make some serious torque and power with a 416 cubic inch small block.

If the crank is good then you will have to be a bit more radical with the engine, but a .040 over can certainly be bulit to that level.

Bob