Quadrajet question
#1
Quadrajet question
17056256 is the number on the carb. So this would be a 4bbl carb from 1976 on my "appears to be original I think 1971 455"
Regardless, I'm trying to see how many cfms this carb is and can't find a definate answer. Does anyone know? I've read 750, I've read 800 and I've read 850. Because these carbs were designed to adjust, but I'd think there's be a maximum cfm rating. Admittedly, I don't know too much about carbs. I've messed with plenty of bike carbs but never a car carb. These quadrajets don't sound like bad carbs but it seems that you either like em or you hate em.
Back to the original question, can anyone tell me what the cfm rating is on this particular carb?
Regardless, I'm trying to see how many cfms this carb is and can't find a definate answer. Does anyone know? I've read 750, I've read 800 and I've read 850. Because these carbs were designed to adjust, but I'd think there's be a maximum cfm rating. Admittedly, I don't know too much about carbs. I've messed with plenty of bike carbs but never a car carb. These quadrajets don't sound like bad carbs but it seems that you either like em or you hate em.
Back to the original question, can anyone tell me what the cfm rating is on this particular carb?
#4
The 850 CFM carbs have a bump inside the primaries, but I can't quite describe it - easy enough to google a picture of it, though.
It doesn't matter anyway, because if you have a 455 with the usual 85%-ish efficiency level, and rev it (optimistically) to 5,500 RPM, you only need 600 CFM.
- Eric
It doesn't matter anyway, because if you have a 455 with the usual 85%-ish efficiency level, and rev it (optimistically) to 5,500 RPM, you only need 600 CFM.
- Eric
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sixty9olds
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September 10th, 2009 04:56 AM