I am looking for a left hand exhaust manifold for a 1969 400 engine.

 

If you haven't found one yet this is the same manifold used from 1969 into 72. All big block engines in 442, Cutlass, Vista Cruisers applications. It will have a large W cast into it near the #1 spark plug and is casting number 402295

John

 

https://classicoldsmobile.com/forums...manifolds.html

 

The 1969 has a heat riser valve; later ones don't although the casting boss is there. I don't know if any 70's had the valve, iirc they didn't.

 

Ooops! I forgot about the heat riser.