I have several NOS Delco thermostats and looking for what the -original part numbers were to fit a 1970 442 455ci with AC. The part numbers I have are 3028896, 3012795 & 3156298, wondering if any of these will work

Thanks

 

Looks like D) none of the above.
I'll add that 3885009 is also called out in the 1970 Engine Assembly Manual for every Olds V8 built that year.

 

Thanks for the quick reply, very helpful

Jim