I have a set of 241 heads that are ported. They have 2369v stamped in them and what looks like a custom plug in the front. They are also stamped driver's side back and passenger's side back. Any idea who did the port work or who sold these?

 

Picture of the stamp? Or is the stamp 2369v?

 

I can get a picture if necessary, but it's the characters "2369v" stamped into both heads. No fancy stamp.

 

Here are some pics:

 

Hard to tell on that exhaust port, but it doesn't look ported (much).

I have no idea what that marking means.

 

They look ported To me clean them and slap them on.

 

These are ported, the cathedral looks a bit wider where the gasket lays edge to edge. As for the numbers they do not match any LS1 motorsports registry I collect on my comp, so perhaps a small business shop. Did you get these from the NH area?

 

They came on a car I bought in northern CA. The previous owner said they came with the motor he swapped in and doesn't know who ported them. I'll try asking some of the local shops.

 

if they were cleaned I could tell you if they were mine. I have ported hundreds for local shops in san francisco bay area