Using the AFBs on the full size 67s with 400s was probably a smart move. As I recall, weren't there some problems with the Qjets when they were first introduced...in 1967? I carpooled with a guy for years that had a 67 Cat convert w the 400 4 barrel setup. It was no muscle car, but it would move damn good. It had the factory AFB setup rated at 325HP if memory serves me correctly. His next door neighbor convinced him to try some huge holley carb on it instead of the AFB. That didn't last long. Car ran completely like SH**t with that setup.
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