Okay I think my lower thermostat housing may be cracked, not sure.
Here's the story though. My 74 Nova has the original 250 in it.
Prior owner put a used head on it. I ran the numbers while the valve cover was off. I think it came back as a 292 head.
Anyhow, I can see gray crap behind the lower thermostat housing and head also, where its bolted on. I guess they like permatex.
Mine has the ONE threaded hole on the drivers side.
The one that I can get has two threaded holes on the drivers side.
Will that matter? Like is it thicker with two holes and will hit somewhere? Like a pulley or something?
