Thread: dual quads on 427
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Old 11-08-2008, 06:43 PM
sideoiler10 sideoiler10 is offline
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Cobra Make, Engine: Shell Valley, '67 Cobra, 1966 427 sideoiler, 2x4s, w/NASCAR toploader
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Default Dual Quads
The first 427 in 63 used 2 600 cfm Holleys. I am running the same on mine. When I switched from the single, I ordered brand new issue (by Holley) date code correct and correct part number stamping Holleys that were guaranteed to be wet flow tested and adjusted, ready to run. That is exactly what I found...they fired right up after bolting on. I had the timing reset and adjusted the idle speed a little. I purchased the carbs from Carl's Ford Parts. Check out his website, he may still have some available.

They are very easy to setup. Pretty maintenace free if they are done right and if you purchase good products. Stay away from some rebuilt junk. They do get lots of attention
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