Respectfully request what to look for when shopping for a used carb

I am going to be assembling & breaking in some 360’s over the next year, sense I have some time to work my project cars & collection of parts.

I bought a running ( I watched on test stand $250) 1978? 360 engine to test my wiring, and carbs, etc. on for these roller project cars so I don’t test a prepped engine build with break-in with unreliable, parts-achieving that 20 minutes, variable > 2000RPM break in without interruption.

Which is how I would test the carb, but I don’t have any experience tuning. Will probably buy O2 sensors and anything else (how expensive is a wide band??? Sensor) needed against reasonable cost.

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$200, bolt on and adjust I guess, but without any adjusting experience. Thanks

Am looking at the Edelbrocks as a low maintenance, all around carb, living under the often suggested gossip: “Holley’s need more adjusting.”

-thanks I actually forgot about that.
Isn’t there 2 different ways to setup/buy the pressure regulators? With or without return line-the first being much more expensive?
6 psi correct?


I have followed your posts here along with others on FABO and assume you would recommend a 750 double pumper, either Holley, Quick Fuel, Holley-based Demon, or something along those lines.
A double pumper would go alright with the manual transmission cars I have, but I have no experience tuning, and only one car will be all out performance-the others will be freeway drivers, in hot traffic- stop and go 80, stop and go...
I did get a 3310 or is it 3311 and will try it out to, but want to try one of the new Edelbrocks.
For what you are doing an AVS2 would be the perfect carburetor. You would want the 650 or 800 for the size of your engine. Don't waste your time buying used, just buy a new one. Don't forget to buy the insulating gasket that goes between the carburetor and the intake to prevent vapor lock and other negative issues. You don't need a return line for this type of install, just a good regulator. I set mine at 4.5#'s then moved it to 5#'s for my street motor. I think I paid about $200 for my wide band and if your are setting up an engine run test stand it will be the cherry on top for knowing what your motor is doing with respect to air/fuel. The Edelbrock support is pretty good and there are lots of videos to help. Your build sounds interesting, good luck!