I have a set of stock rods from a 1968 350. The rods have been glass blasted and checked for straightness and honed big ends, new ARP rod bolts. The question I have is, are these rods any good for a 350 W31, copy build up? Is there a differens in steel quality and hardening between stock 350 rods and the W31 rods? I have read a lot of information about olds engines but I havent found information about this. Maybee som of you know.

 

I don't know of any differences between them.

 

If you have any doubts about them... well they are the same ones the factory used. Also you could EITHER find someone to either do the cryo hardening (freezing the metal) or heat treating them.. (can't remember the term) in addition to the shot peen will strenthen them to a large degree.

John

 

look the rods over well any nicks can cause a stress crack we file nicks down then shot peen like said above

 

OK, only one type of 350 rod. Same steelmaterial in rods, but have to shotpen or freeze. Thank you guy´s