I picked up this holley 750 for 50 bucks.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&sspagename=ADME%3AL%3ARTQ%3 AUS%3A1&viewitem=&item=280120745216&rd=1

It was missing the choke leaver and primary float adjuster as well as having some oxidation (rust) on the baseplate aluminum and steel parts and a bit dirty. The parts are easy to replace and the Anodizing is intact and I'd like to keep it that way but I will have to rebuild the base and clean the thing up.
I figure the rust on the venturies might warrent replacing them but I was thinking Phospheric acid (Eagal One Mag wheel cleaner) to clean the aluminum with a toothbrush but thing is it will remove the finnish.
Anyone know of what I can use to clean up the rust and the soot that won't remove the anodizing?
John

 

Regular spray carb cleaner should work ok. I've never had it remove the coating.

 

I used the 1 gal carb wash can for cleaning carbs because no amount of spray would have cleaned it.
the anodizing came right off in the first minute as I feared it might but fortunatly I have a powdercoating set up and was able to Extreem Chrome it. I spent like 165 in parts to restore the carb though. I it needed a new primary bowl - The Float needle hole was stripped. The throttle linkage was bent and the throttle plates were rusted. I also got a Secondary metering plate (upgrade, new floats, needles for the primary, and a nonstick gasket set. As it had no choke I went Electric.
I need to finish assemble but I think it came out nice. To buy it new would be like 550 bucks so I thik I made out after all. I'll snap a few pics and post this weekend.
John