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Old 07-04-2012, 02:28 PM
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Demon carb identificaiton

Can anyone identify this Demon Carb? I cannot locate any numbers on the carb, and none of the info on their website helps me. It's running very rich and I have no idea how to know it's cfm or how to adjust. Thx in advance.

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Last edited by mpall4him; 07-04-2012 at 02:39 PM. Reason: added pics
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Old 07-04-2012, 02:31 PM
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Can anyone identify this Demon Carb.

Here are the pics!
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Old 07-04-2012, 04:21 PM
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I don't see any pics
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Old 07-05-2012, 06:30 PM
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Having a hard time getting the pics under 3 megs
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Name:	001.JPG
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ID:	66578  
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Old 07-05-2012, 06:33 PM
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Looks like either a Road Demon or Road Demon Jr. No idea on size just from that picture.

Can't tell you for sure unless you post the #'s off the drivers side of the carb main body.
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Old 07-05-2012, 06:46 PM
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Here's a few more
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Size:	1.20 MB
ID:	66579   Click image for larger version

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Size:	1.17 MB
ID:	66580   Click image for larger version

Name:	005.JPG
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Size:	1.21 MB
ID:	66581  
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Old 07-05-2012, 07:05 PM
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Like I said, it's a Road Demon of some sort, no one can tell you size without the ID #'s...or measurements of throttle blade diameter and venturi diameter.

Just pictures is only going to get you so far in identifying it.

All adjustments are just like a Holley 4 barrel.
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Old 07-05-2012, 07:36 PM
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OK, I'm going to look for some identification numbers on the driver's side of the carb. Thx.
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Old 07-05-2012, 07:44 PM
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The rear boosters are annular. If the primaries are annular, it's a road demon jr. 525.
If the primaries are downleg boosters along with the rear annulars, it's a Road demon Jr. 625
It has to be one of the two as if I recall correctly the road demon jr. 725 had primary and secondary down leg boosters.
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Old 07-05-2012, 10:27 PM
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Quote:
Originally Posted by mpall4him View Post
OK, I'm going to look for some identification numbers on the driver's side of the carb. Thx.
It's a road Demon Jr. as DV said. It's either a 625 (#6 w/dimple) or 725 (#7 w/dimple), due to the downleg primary booster along w/the straight leg secondary booster.

The size ID is also located on top of the carb , see the drawing below:

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Old 07-06-2012, 07:06 AM
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Thx for this information. I think I can figure out exactly what I have now!
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