If it was me, 60 thou is as over bore as I would go, I guess what I am saying is I would pass on that. That's just me though.

 

Twisted - Do you know if it is all together or is in pieces? Can you still hear it run or has it been pulled? To me, .060 is a lot to bore any motor to. If it runs great or if you can look at the cylinder walls, I'd do that and go from there.

Is there a good price on it? What else comes with it for upgrades?

 

does it have to be bore out more?

 

I wouldn't go more than .060 max overbore on a 340, you'd be getting into some scary territory with any more than that.