big-end thread size?

[ardvaark]

Can someone tell me what thread the big end bolts are please?
I need to replace one of the nuts which is cross-threaded. It's from a 1972 Range Rover if it makes any odds.

Thanks for any input.

[ardvaark]

I'll come clean. The motor is forming the bottom half of a coffee table and will not be running again. I'm just re-assembling the bottom end for show. It looks pretty cool so far.