Demon Experts???
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,119
Likes: 213
From: Pittsburgh PA
Demon Experts???
The 625 cfm Road Demon is $100 cheaper than the 650 cfm Speed Demon. Both have vacuum secondaries and electric chokes.
Is the 25 cfm the only difference for $100?
Anybody out there love his Road Demon?
Jay :cheers:
Is the 25 cfm the only difference for $100?
Anybody out there love his Road Demon?
Jay :cheers:
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
Re: Demon Experts??? (foundvettelifeisgood)
I think so, but am not positive. I currently put a road demon in place of my q-jet. All I can say is I love it. My car ran a 14.6 at the track and now I am adding headers. I think the road demon can easily support 400 horses or more.
Mark B.
Mark B.
Pro
Joined: Aug 2001
Posts: 605
Likes: 0
From: hamilton square NJ
Re: Demon Experts??? (Cookwithvette)
Check barry-grant.com for the specs on the carbs. Demons are usually under rated for the cfm. :D The carbs are built for a specific cam duration and HP rating. I have a road demon on mine and the cam is a little too big for it by 10 degree's or so. All I do is adjust and readjust. I'm getting pretty close to the nice point but it's been a long time coming. If you've got a cam with 224 or higher duration go with the Speed Demon. It'll be set closer to where you want to be.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
Re: Demon Experts??? (foundvettelifeisgood)
i purchased mine from Summit racing. It comes with gaskets and the fuel line. The only things you need to buy are a ball stud kit, wires (for choke), and fuel line to run a new line.
Mark B.
Mark B.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Burning Brakes
Joined: May 2000
Posts: 765
Likes: 0
From: Canton GA
Re: Demon Experts??? (foundvettelifeisgood)
I ordered the Road Demon. Then I decided...well hm..maybe I ought to see what Demon recommends for my setup and future plans. They told me I'd be happier with the Speed Demon 650 Vac Secondary. So I shipped the Road Demon back to Summit, and Ordered a SD. Another odd thing, a SD doesn't come with a Fuel Line, like the RD does...but there only like $20.
The only problem I had...was the lip on the back of the carb (not carb base)...hit my vacum fitting in my manifold...which is required for my vac accessories. So I had to grind off a little on the back of the Demon body..its not visible or anything...and it was in an area that didn't effect anything...all works good now...still fine adjusting the carb though...but runs nice.
:cheers:
The only problem I had...was the lip on the back of the carb (not carb base)...hit my vacum fitting in my manifold...which is required for my vac accessories. So I had to grind off a little on the back of the Demon body..its not visible or anything...and it was in an area that didn't effect anything...all works good now...still fine adjusting the carb though...but runs nice.
:cheers:
Instructor
Joined: Jul 2001
Posts: 240
Likes: 0
From: kennett square,pa,us
Re: Demon Experts??? (foundvettelifeisgood)
I have a 650 Speed Demon, best carb I have ever owned.
Road Demon 200 to 350 Hp. Doesn't loose tune after setting a long time.
Speed Demon 350 to 500 HP. Street / Strip Vacuum or Mech. secd.
Road Demon 200 to 350 Hp. Doesn't loose tune after setting a long time.
Speed Demon 350 to 500 HP. Street / Strip Vacuum or Mech. secd.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Re: Demon Experts??? (bud snyder)
Your right. I do like the Demon carbs. The new Mighty Demon looks good. My Holley only has about 2000 miles on it so it is hard to justify. Maybe if I can find a buyer for it. I might be more tempted :yesnod:
