This is all great info guys. Thanks for chiming in. I would also like to add that the babbited rods are 1.470" wide and the inserted ones are 1.245". So if it is your plan to run an inserted bearing rod on a drilled crank it may get trickier....
I do know that my engine has been down before. I do not know if it has had new rod bearings pored in. The bearings are in great shape, still have the shim in between the rod and cap. I have not measured the clearance yet, but I will this weekend when it goes back together.
Yes that's right, you have to use the correct Stovebolt rods for the crankshaft being used, they do not interchange between the babbit crank or full pressure crank because of the width difference. But when performing the GMC rod swap, the GMC rod is a direct bolt-in for the babbited Stovebolt crank, as they are the same width. But to install them on the later full pressure crankshafts, they have to be narrowed, but that is easily done.
So if your going to drill the babbited crankshaft rod journals for modern oiling, then you can perform the GMC rod swap in that engine, otherwise the babbited rods are the only choice you have to use in that engine.
