Use stock 1970 340 rods in rebuild?

yeah, you can re-use the rods, but I would recommend installing new bolts and having the rods reconditioned. It will cost a little more than a new set of aftermarket rods, but I like that the stock rods have an oil squirt hole to help oil the bore on the opposite cylinder. The new aftermarket rods do not have oil squirt holes, so I would rather spend the extra $40 to buy new bolts and recondition the old rods... You don't know how many times the engine could have been taken apart and re-assembled before you bought it and the bolts could already be stretched...

You need to replace the bolts because if they have been taken apart and torqued more than 5 times, they can be stretched to much and break early... Are you willlng to blow up your engine to try to save $70 on new rod bolts????