I had a 600 holley on my old thunderbird, I had it rebuilt by a guy who has 2000hp racecars my dad works with. Think started and ran like fuel injection. I mean, seriously. No pumps, just a blip of the key and whurrrrrrrrrrrr. Big block ford rumble. I guess it's like qjets in a way, some people know em inside and out, others dont.
You know, full disclosure, I admit I am not a Holley expert so I’ll give ya that one. The only things I know are that (at least these older model) Holleys are great on race cars but don’t tend to have a reputation for fuel efficiency. I have never had anyone tell me how their crappy properly built, clean, and adjusted QJ gas mileage is SO much better now that they put their Holley on. I have had people tell me that their car with an old long ago needed rebuilt QJ runs better now with a new Holley on it. Every one I’ve ever been around in my nearly 60 years ran horribly rich though they were not my cars so maybe they were ALL not adjusted properly. This one actually starts fine and the electric choke even works but long after it releases you spend more than 30 secs standing behind this car and your eyes are burning. But rather than teaching an obviously old dog new tricks to learn at this stage how to work on Holleys, my immediate desire to switch to a Quadrajet is that a QJ belongs on this car, I do know how to work on them, and I will soon have a Holley for sale, nearly new, in its original box. 👍
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