Big Block A-body Exhaust Manifolds

Those can be easily welded back together if you have all the pieces, or not.

I use Crown Alloys Company, Royal 44-30 wire in a MIG all the time to repair cast iron parts. The best wire on the market for cast iron repairs.

https://crownalloys.com/wp-content/...rning-White-PWP-added-to-website-11-23-15.pdf

Also there is no need to pre-heat, or post-heat the metal. It just plain works.

Tom