I just bought a thermoquad carb. at a swap meet that looks pretty clean. It looks to be rebuilt. I think it is a 750 CFM unit. How do you tell the difference between that and the 1000? Thanks, Mike D.
I'm pretty sure the Thermo Quads only came in 800 and 850 CFM ratings, that is the carbs that were OEM. The 800 had a primary throttle plate that was 1 3/8" across while the 850 was 1 7/16". Don't know that much about the 1000 CFM units except they were strictly aftermarket. Dave Berry