Checking threads are good during engine rebuilding

[series14]

I am looking for a good method to check taped threads in antique engine parts during an engine rebuild.  Up to this point I would chase all the threads and to a test torque with a test spacer in place of the engine component before I do final assembly.  It isn't always fool proof, and was trying to figure out if there is a better method to check if threads in an old engine block are good before I do final assembly?  Thanks

[Stude Light]

Make sure you use a chasing tap and not a standard thread cutting tap.

[Frank DuVal]

These people:

https://jawco.com/collections/rethreading-tap-die-and-file-sets

 

They have been around a long time, just sold through vendors or private label like Snap-On. Now open to direct sales on the internet.

[series14]

I do use chasing taps, but i think the hole is warn and may have internal rust pits.  I was just trying to see if there is a more reliable method for checking threaded holes for unseen damage.

[hook]

2 B positive, If your really concerned, just drill them out and helicoil them.