Originally Posted by junior stocker
Unfortunately yes, there is more than just R and R' ing the rod bolts. The big end of the rod needs to be resized after new bolts are pressed in. Best just to let an automotive machinist do the entire operation and they can magnaflux everything at the same time for you on that high winding 377. BUTCH.
In the 80's when building the circle track engines we were required to build them with the stock rods and we never had any issues with the stock bolts. But we did see some problems after installing after market rod bolts and after a season of running and magging the rods during a rebuild we would fing stress risers in the rod just below the head of the rod bolt.
The conclusion was the new rod bolts have a lot interfearance and they require more torque which puts more stress in that area of the rod and the stock rods are only a 1038 steel.
Over the years I have seen broken rods but no broken bolts.
If you are going to use stock rods stay with the ones in the 80's and early 90's as they are a better forging over the early rods.