Just pulled my 56 235 sump to clean it out.
Thought i would take the opportunity to check out the big ends.
A couple of them are grooved and the front 2 are showing the copper.
I prefer not to pull and regrind the crank although i know it is probably best.
So looking to just fit a new set of bearings and rebuild the oil pump if this would buy the motor another 10 or 20k miles?
Issue is I dont have a mic here the right size to measure the bearings.

There is a mix of bearings which is odd probably not a good sign either.

5 are marked
It looks like
AB 51 possibly UAB
6950 cap
7- 35. E
9 - 35 DA-49

The number 2 rod had a Clevite bearing 77
12 88. (I guess week 12 1988)
CB416P
AA

I cant see STD or 0.10. 0.20 or anything stamped on any of them to signify the size.

Does this mean i have std size journals?

Cheers guys
Richard