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Originally Posted by 00fxd
Wow. Take a pill. And re-read my last post.
I also have lots of qjet cores and have no problem using them in the apropriate application. My comments were directed to those who have been "brainwashed" that the comp series edelbrock is the ultimate carb. It is not.
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Take a pill for what? ................
My reading comprehension is just fine, and I read every word of all your posts
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Here are your own initial words:
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It's pretty simple. If you want it to run nice and predictable like your moms station wagon you use an AFB/Clone [or if applicable the original Qjet]. If ya wanna go fast you use a Holley.
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You have an obvious bias towards holley carbs in a performance application, or did I misinterpret your words?
I've used all of them except for the E carbs, due to the poor reports from early users about their shortcomings. I have used the Carter carbs for years and was looking forward to the E carbs filling in the gaps since Carter went under, but it didn't come out as planned. Edelbrock was able to take a good design that worked well as a daily driver, and a performance carb, and through whatever they did, render it unreliable and mediocre to use in either application. I do happen to agree on that point.
I've even used Autolite 4 bbl carbs on street performance applications also. Fix the shortcomings that the manufacturer didn't get quite right for a performance application, get the jetting right, and it can be used as a performance carb.
There is no appropriate application for each brand of carb. The QJ is one of the most versatile carbs ever made. Used from 230 CU IN to 500 CU IN, on the same basic design. They happen to work well in a performance application also, as long as someone wants to take the time to re-calibrate them to performance use, they are fine. Stockers run 9 seconds with QJ carbs, as rules require them. Ford used QJs as original equipment on their 1970 429 Cobra Jet engine.
Still the street section, so in most street applications the Rochester will be plenty sufficient, and a holley could easily be interchanged, and work equally as well in the timeslip department.
Our QJ expert here on PY, (Cliff Ruggles) will tell you he's tried both holleys, and QJs on his 11 second street strip Ventura, and actually has run just a touch faster with the Rochester carb over the holleys on the dragstrip. We're talking hundreths of a second, but his testing has proven that they stand on equal footing. He also used the Pontiac QJ cast iron intake manifold over aluminum intakes, and went a tad quicker with the cast iron intake.