putting aside some of the details, I have been loaned a carb for inspection;
It is obvious that this carb has been apart from the following details;
1) primary butterflies have been exchanged for non-GM parts
2) thick epoxy on primary and secondary well plugs
3) throttlebody appears to have been sanded smoothe on the bottom, and secondary butterflies appear to have been cleaned with a wire brush of sorts.
OK, with that attempting to paint a picture, I am left scratching my head on this airhorn, because I cannot find a casting number on it.
Maybe only Cliff can speak to this, but were airhorns ever made with no casting number?
Where might I look for (hidden?) stampings which might speak to it's pedigree?
It looks to be a 1968-1970 Pontiac non-POE airhorn
Clue: it has a washer to retain the belows...
