EXHAUST MANIFOLD ID

[polarus]

I'm trying to ID an nos LH exhaust manifold. It has a 72 casting date and the cast number is 3671788, no part #. This sound familiar to anyone?

 

[detmatt]

Big block? My first guess is that it's for a '73 model.

 

[polarus]

I know the C body big block HP manifold # in 73 is Part # 3744821 Cast # 3751724, it looks very similar to the one I'm looking at. This casting # is not in any of the books I have.

 

[detmatt]

Pics man!

 

[Dobalovr]

It appears to be a truck manifold from a 400 V8 IMO

Feebay had pics

 

[polarus]

It appears to be a truck manifold from a 400 V8 IMO

Feebay had pics

Thanks.

 

[polarus]

I have a photo of the 73 manifold, the trouble is the book I have lists the part# but not the casting#, the part has a casting# but the only part# is on the box which could have been swapped out.

 

[Dobalovr]

I have a photo of the 73 manifold, the trouble is the book I have lists the part# but not the casting#, the part has a casting# but the only part# is on the box which could have been swapped out.View attachment 103083 View attachment 103084

Well the part number on the box seems to be valid but changes up to 3837621