just found out one of my navarro flat heads is cracked. if i have it welded at the machine shop should i expect the repair to last or will it just crack again in the future?will i be chasing my tail?
If and it is always a big IF your shop knows what they are doing you should have no problems with that head.
If you have the right welder do the welding I don't see a big problem with it but you do need to to have the right person do the welding. Someone in that area of the country can probably give you the name of the go to guy around there.