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Old 03-01-2005, 02:05 PM   #1
RCOMBS
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Identify this Carb??

I was wanting to know if anybody could identify this HOLLEY Carb. It is a double pumper.. What CFM? Is it a good carb? The only #'s I could find on it is
these.
70645
4778-4
1038
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Old 03-01-2005, 02:14 PM   #2
1970 CST Short Wide
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The 4778 # says its a 700 CFM. I had a 4777 650 CFM on my small block and liked it
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Old 03-01-2005, 02:18 PM   #3
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Its 700 cfm, but my book is too old (dont have a listing on the -4), so i cant give all the specs on it. You might try the Holley website....
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Old 03-01-2005, 02:24 PM   #4
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How would this Carb work on a 350 w/ mild cam??
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Old 03-01-2005, 02:25 PM   #5
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Quote:
Originally Posted by RCOMBS
How would this Carb work on a 350 w/ mild cam??
Probably a little big, but you could get away with it.

</out of touch with modern carburetor methodology... just going on old knowledge>
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Old 03-01-2005, 02:25 PM   #6
1970 CST Short Wide
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I would say you might re-jet but would work fine
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Old 03-01-2005, 04:49 PM   #7
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It's also a double pumper.

Like 1970 CST said, jet it down and it should work fine.

Check out www.mortec.com - it has Holley carb information and tuning tips as well as a lot of other info..


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