Road Demon Jr.

Im thinking about the 525 cfm road demon jr. from my 289, Should I bee impressed by the following specs? Also what is "Max Density" and how does it compare to billit carbs? Its either this or a 600 cfm edelbrock (hard to tune from what I hear) and for the extra 50 bucks if the demon is better ill gladly pay it.

Barry Grants website says the following:

Road Demon Jr

This is the perfect replacement carburetor for entry level, general performance cars and light trucks. The Road Demon Jr. is offered in three sizes for these engines and cam profiles:
525 cfm – 260-400 cid, less than 210 degrees @ 0.050”
625 cfm – 302-400 cid, less than 220 degrees @ 0.050”
725 cfm – 350-500 cid, less than 220 degrees @ 0.050”

These are engines having smooth idling characteristics.

Features:

• Max-Density rib-reinforced cast baseplate
• Max-Density cast metering blocks
• Vacuum Secondary operation
• Patented air entry design
• Concentric Venturii
• Float bowls with large, EZ-Safe sight glasses for safe float level adjustment
• 2-Corner idle adjustability
• Large, trouble-free fuel transfer tube with dual-captured O-ring sealing
• Built-in Power Valve blow out protection
• Vacuum ports: 2 constant, 1 ported
• Available with Ford kickdown linkage
• Every carb is wet flow test and base line calibrated at the factory
• Every carb comes with a detailed tuning manual
• Most common tuning parts interchange from other manufacturers (Jets, Power Valves, Squirters, Needle & Seat Assemblies, Gaskets etc.)
• Optional choke available

Benefits:

• Crisp throttle response
• Ease of tuneabilty
• Excellent driveabilty
• Good top end performance
• Good fuel economy
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My vote is for the Demon[img]/phpBB/images/smiles/icon_evil.gif[/img], nothing scientific, it just looks so dam pretty[img]/phpBB/images/smiles/icon_lol.gif[/img]!

I will second that nomination.
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The Demon is the better choice. The Edlebrock is pretty easy to tune, but the 525 fits a 289's needs better.
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<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2002-12-11 03:54, HitmanKB wrote:
Im thinking about the 525 cfm road demon jr. from my 289, Should I bee impressed by the following specs? Also what is "Max Density" and how does it compare to billit carbs? Its either this or a 600 cfm edelbrock (hard to tune from what I hear) and for the extra 50 bucks if the demon is better ill gladly pay it.

Barry Grants website says the following:

Road Demon Jr

This is the perfect replacement carburetor for entry level, general performance cars and light trucks. The Road Demon Jr. is offered in three sizes for these engines and cam profiles:
525 cfm – 260-400 cid, less than 210 degrees @ 0.050”
625 cfm – 302-400 cid, less than 220 degrees @ 0.050”
725 cfm – 350-500 cid, less than 220 degrees @ 0.050”

These are engines having smooth idling characteristics.

Features:

• Max-Density rib-reinforced cast baseplate
• Max-Density cast metering blocks
• Vacuum Secondary operation
• Patented air entry design
• Concentric Venturii
• Float bowls with large, EZ-Safe sight glasses for safe float level adjustment
• 2-Corner idle adjustability
• Large, trouble-free fuel transfer tube with dual-captured O-ring sealing
• Built-in Power Valve blow out protection
• Vacuum ports: 2 constant, 1 ported
• Available with Ford kickdown linkage
• Every carb is wet flow test and base line calibrated at the factory
• Every carb comes with a detailed tuning manual
• Most common tuning parts interchange from other manufacturers (Jets, Power Valves, Squirters, Needle &amp; Seat Assemblies, Gaskets etc.)
• Optional choke available

Benefits:

• Crisp throttle response
• Ease of tuneabilty
• Excellent driveabilty
• Good top end performance
• Good fuel economy

</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>

MAX Density? Meaning? Heavy metal...Hopefully they are using the stronger

Concentric Venturies? All venturies are concentric

Patent air-design? HP Holleys have the exact same curves, minus 1-2 degrees of an angle

Compatiability of components? That's correct and only for the items listed.

All Holleys now come with Blow-out protection standard!

2-corner idle? That's all you need for that motor. Good option. 4-corner is best but not needed with that camshaft

Clear veiw sights? They often break easily, ensure you get the metal ones also when they do. I know! I have had to choke up many of them to my customers because of breakage. Now its policy to send out metal ones as well. They only cost about $1.50

Other than that its a great looking carburetor, just don't get drawn into all the hi-po parts jargin! The ad looks a little over-glorified, but hell Barry Grant makes money...[img]/phpBB/images/smiles/icon_biggrin.gif[/img]

Just my 0.02

~Ty
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I myself have been wondering how good the lower end Demon carbs are.

I've been trying to decide if I want one of those or a Holley, and I'm looking to spend ~$300.

That spec list shows the carbs as being up to 220 lift, and my new cam will be a 224/236.

Maybe that TPC guy can recommend me something [img]/phpBB/images/smiles/icon_biggrin.gif[/img]

_________________
-Jason

1969 Cougar 351W FMX

http://www.iz-us.com/cougar

<font size=-1>[ This Message was edited by: MunchE on 12/13/02 11:15am ]</font>

I could set you up with a 650 Double pumper.... A Stage 3 650 #4777 Double pumper would run you $450.00 or you can go beyond streetability and get the 750 w/Annular boosters $475.00

-Modified/cut boosters
-Nitrophyl floats
-Jet extensions
-Full blueprint
-Custom calibrated metering blocks
-4 corner idle
-Aeroquip fuel fittings

Just to name a few...

This is completely customized to your motor/cam profile. Color choices are free of charge. TPC Racing is very well known for the attention to detail in show quality set-ups. So if it's more show than go your after, why not have both![img]/phpBB/images/smiles/icon_biggrin.gif[/img]

Hands down our 650's are unbeatable. If and when your interested in something we offer, feel free to contact us Toll Free (877)872-2272

And leave the rest up to us...

_________________
1986 F-350 4X4 Crew 6.9L Diesel Banks Turbo 1997 GT-Stang/5-Spd (to-be-wife#2's car)1981 Crusader Jetboat, 468BBC Tunnel Ram NOS, TPC HP750 http://www.tpcracing.com

<font size=-1>[ This Message was edited by: TPCRacing on 12/13/02 12:42pm ]</font>

Thanks alot for the responses, but what the difference between billit and max density??
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In some adds I saw that they showed a cut through of a Holley carb and one of theirs. The Holley had a lot of air pockets in the casting and the Demon didn't. I think that's what they mean with max density. I bet they used the worst example Holley they could find though.

Thanks Helmantel, but what is billit casting then and how much better is it than max density? What are the holleys, e-brocks, and autolites cast as?
Once again thanks,
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