Nice one Oxnard, the guy told me it came off a "67 deluxe" - I wasn't aware that it was a smog item. I wonder if its not just better to shuck out a few bucks now and be done with it - this carb is pretty dirty is going to require alot of work. Holley, here we come...... or spend a bit more and do the 4100

 

Do the 4100 - for many reasons if not for the single reason that the whole bottom half is one piece. No where for any fuel to leak out of a gasket. Easily tunable and they are a great carb. It's been hit or miss on Holley's as far as I am concerned. Although the Barry Grant carbs are nice.

I think I bought my 4100 for around $55 - they're out there still and pretty cheap. Get a rebuild kit or have Pony do the rebuild and it'll last for years!
Look on Craigslist.org for stuff too...

 

check out the other 4100 thread, I just linked an ebay deal.. price looks okay or you can get a pony carb one for like 500 thats been built and tested.

 

Buya 4100 on the cheap and then send it to Pony Carbs... it'll cost less than $500 that way. MakeDAMN sure to get one with the short accelerator pump snout... Pony won't do any work on the ones with a long snout...
Link has a picture showing the difference from long and short snout... http://www.ponycarburetors.com/defau...identification

If you want to do the spreadbore conversion then you have to pickup a 4100 carb with the 1.12 primaries (fyi - the number 1.12 is stamped on the side of the carb for reference)

 

The folks at Pony really seem to know their stuff - I called with some questions aboutthe Autolite 4100 carb vs. a Holley carb and the person I spoke with was very helpful.

 

is there a autolite or motorcraft 4300 carb model 4bbl no vac 2ndris .. thats the carb i think i have by looking @ some pix .....................