I've got a 6090S and a 6322S
The 6090 is a '72 400HP for Federal emissions unit and the 6322 is for a '73 440 truck, also Federal. Both are carbs worth knowing.
The large elbow on the lower right that points down is one of the connections to the vapor canister. The other is a vacuum port on the front of the baseplate.
I don't know am I'm getting crazy here, I just paid 200 for the eddy, should I scrap this dumb idea & just go with that?
If you just bought the carb and it's
new, I guess I'd say run it. Edelbrocks are some of the okay-est running carbs straight out of the box. People who don't like to tinker love 'em. They're very simple carburetors to rebuild, and there's not much tuning possible, much less required. For cruising and ice-cream runs there's no reason not to use it.
If the Edelbrock is
used, opening it up for inspection would be a good idea. Edelbrocks corrode badly if they sit with modern fuel in them for any length of time. The float-bowl baffles and float arms are made of the cheapest steel extant and they're very rust-prone. I had one back around '01-'02 that the rust had galled to the float bowls so badly it couldn't be cleaned. It even got past the jets. I ended up giving it away, and I think that person tossed it.
Personal experience: When I had my '73 340 Challenger, I listened to all the morons that said to get rid of the ThermoBog and put a Holley on it. It drove pretty well, but not as well as the small-primary spread-bore TQ. Under full throttle, though, it was night and day. The Holley simply couldn't feed the engine enough air--it started nose-diving at about five grand. The TQ would pull right off the end of the tach. The Holley also didn't have that distinctive four-barrel roar that's unique to ThermoQuads and QuadraJets (even a Six Pack doesn't do it). Fuel economy wasn't as good either, though 17-year-old me didn't really care about that so much. It's really a hard carb to beat.
Now, with all that being said:
ThermoQuads are a bit of a bastard to rebuild for the uninitiated, so if you buy one that's not already done it's not a fun job. There's a special tool required to get the secondary air doors adjusted correctly. It can be worked around but that's a tricky process. Plus, you have to buy a carb, an (expensive) rebuild kit and floats, then do the work before you even get to tuning the air-door opening or linkage adjustments. ThermoQuad = work.
Edelbrock Performers are a 2-piece design and extremely simple. The longest part of the rebuild is the soak/cleaning process. Assembly can be done in half an hour by a newbie, and there's rarely little that needs adjusting other than the idle mixture screws. Jetting is usually a fool's errand; at most you might need to fiddle with the accelerator pump shot if you have a stumble. Tuning and rebuild parts are readily available new and at reasonable cost, which is absolutely
not true of ThermoQuad.
Long story short: If the Edelbrock looks OK inside or is new, it's probably the better option for your build.