I've said it before and i will say it again...Holley carburetors make good doorstops. While I do run one on my supercomp dragster, remember that I work on that car all of the time so changing a fuel bowl gasket or power valve is no big deal. But, I don't think that you want a gas leaking, power valve blowing piece of crap on your daily driver. Don't get me wrong, I have a 6 pak small block setup and a 6 pak 440 setup and I won't get rid of them because they are mopar cool. I don't drive the six pack cars very often and they always need attention. The biggest mistake is not seperating the daily drivers from the daily hotrods. Most musclecars are overcarbureted. The recommended carburetor for my crate hemi is a 750. Thats approximately 1.76 cfm per cubic inch. That comes to 598 cfm for a 340. So I would think that a 650 or 670 would be plenty of carb for your average near stock 340. All of my daily drivers either have fuel injection or afb style carbs. No gasket below the fuel level like Holley carbs. I put a Carter AFB on my 71 cuda six years ago and have never touched it. That car runs like a bat out of hell and starts good every time I get in it, even if it's been a few months. Show me a Holley carb that hasn't leaked in a few months and I'll show you a Holley carb that hasn't had any gas in it.
Hey, It's just my 2 cents worth guys. If you love Holley's...go for it.
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