11-01-2006, 06:02 PM
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CC Member
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Join Date: Dec 2003
Location: Lehigh Valley, PA,
PA
Cobra Make, Engine: Look-a-like cobra POS
Posts: 955
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Not Ranked
Joe,
I am also running a 950 Divinci Super Series carb. Basically a Holley 4150 - PN# 80496-1.
Jeeze Joe............ I know this can be real frustrating, but I have a feeling you are quite mechanically inclined and like myself will not let a *#cking carb get the best of me.
Size wise of your carb, you should be OK using "the math": engine cu.(482) in X Max rpm (6500) divided by 3456 is 906 cfm. Bump to the next HIGHER closest carb.........
Sometimes the math is not always right. 
Anyway,
One last thought..................
Using the original jets, did you check the secondary throttle plate position before WOT (idle/transfer/pre-secondary). The throttle plate being completely closed can cause a rich condition. Sometimes by cracking it open a little more it will lean out your midrange mixture and also allowing the secondary circuit to "prepare" for additional fuel delivery.
Just a thought....
Good luck Dude. 
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