i have a 5.3 out of a 2008 suburban. the crank is in great shape so we are just freshening it up. my rod bearings have the number A590 and the mains has AS1241. are these stock or oversize. i can't cross the numbers anywhere yet. just want to order the correct size brgs. thanks in advance

 

The bearings will say “std” or “.001” etc on the backs. Std indicates stock sizing. .010 indicates it’s been cut on previously. GM bearings are always dated along with that sizing stamp.

 

Ok Thanks I will look at the other half of the rod and mains. the numbers i posted were all that were on that half besides the date.