I think I blow a head gasket on my 440. And was thinking if I pull them 906 heads off, I could upgrade to aluminum heads.
My motor has been together since 2000 and it’s a good running 440 that runs low 12. My question is can I go with aluminum heads with my 6 pack setup , headers and keep it under my shaker hood? And pick up some more horse power! Or should I keep my 906 heads?