UPDATE!!--Quick Fuel Carb after defective BG Demon - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72step · 03-21-2007, 12:27 AM

I posted weekend before last about what junk BG Demon Carbs are after I got two in a row defective brand new Demon Carbs from Jegs. By the way, Jegs has great customer service. They never asked a question on any of my returns.
Well, I returned the 2nd defective Speed Demon 650 and decided on a 650 Mech, Quick Fuel Q-Series which has a Proform main body, and is basically a modified Holley Ultra HP, and is more of a performance carb. To make a long story short, I installed the QuickFuel out of the box and it's running just as good if not better than the first Demon I got which ran good but leaked gas. This carb I haven't even touched with the screwdriver, and it ran better than that first Demon and that Demon I spent some time on tuning it in. The QuickFuel seems to be a little meaner, and that's with the Vacuum from my tranny disconnected because I need a longer piece of vacuum hose so it was idling kinda funny. The QuickFuel carbs are engine tested and it shows cuz everything is pretty much on. Of course I'll probably fine tune the idle mixture, but the floats are good. Oh, and the red billet metering blocks and baseplate look real sharp! All I can say is I'm a happy camper with the Q-Series, and Jegs has 100% Customer Satisfaction and I can atest to that!!

RACINJASON22 · 03-21-2007, 12:46 AM

Isn't it so much nicer when something goes right for a change. Glad to hear it. RJ22

GREASEMONKEY72 · 03-21-2007, 02:28 AM

cool deal man, nice to hear the trucks running good, now you just need to put up some pictures cause you know how this board works...hahaha

70c10 · 03-21-2007, 07:19 AM

Did you get a mechanical or vac secondary carb?

connman · 03-21-2007, 08:26 AM

I also run a quick fuel carb on my BB454. I had it about two years and have no problems at all. Good Luck with yours.

mnunn454 · 03-21-2007, 07:11 PM

A friend of mine had a bad experience with his Annular Booster Demon Carb. It had a machining burr left in one of the main jets (sloppy Quality Control). He discovered it when testing his 454 Corvette on the Chassis dyno. Picked up almost 100 HP when the day was done, most of which was attributable to the machining defect.

As far as the carb design is concerned, I hear it's a killer.

Personally, I prefer Holleys. I have a 770 CFM Street Avenger atop my 70 Elky's 454 and a 750 DP atop my 69 C-10's 454. Love them both.

JHART · 03-21-2007, 07:20 PM

Can we see some pics of the new carb installed?

Rick Mills · 03-21-2007, 07:28 PM

You get to see the integrity of a company in how they handle problems. It's then that the good ones are separated from the bad ones.
Glad to hear everything turned out alright.

**truckdude239** · 03-21-2007, 09:50 PM

72step · 03-21-2007, 10:15 PM

Thanks for the comments. It's mechanical. I'll post pics tomorrow.

I'll have my wife do it for me because I just got surgery for carpal tunnel. So yes the wife is responding for me.

03-21-2007, 12:27 AM	#1
72step Registered User Join Date: Nov 2000 Location: chimayo, nm, usa Posts: 898	UPDATE!!--Quick Fuel Carb after defective BG Demon I posted weekend before last about what junk BG Demon Carbs are after I got two in a row defective brand new Demon Carbs from Jegs. By the way, Jegs has great customer service. They never asked a question on any of my returns. Well, I returned the 2nd defective Speed Demon 650 and decided on a 650 Mech, Quick Fuel Q-Series which has a Proform main body, and is basically a modified Holley Ultra HP, and is more of a performance carb. To make a long story short, I installed the QuickFuel out of the box and it's running just as good if not better than the first Demon I got which ran good but leaked gas. This carb I haven't even touched with the screwdriver, and it ran better than that first Demon and that Demon I spent some time on tuning it in. The QuickFuel seems to be a little meaner, and that's with the Vacuum from my tranny disconnected because I need a longer piece of vacuum hose so it was idling kinda funny. The QuickFuel carbs are engine tested and it shows cuz everything is pretty much on. Of course I'll probably fine tune the idle mixture, but the floats are good. Oh, and the red billet metering blocks and baseplate look real sharp! All I can say is I'm a happy camper with the Q-Series, and Jegs has 100% Customer Satisfaction and I can atest to that!! Last edited by 72step; 03-21-2007 at 12:30 AM.

03-21-2007, 12:46 AM	#2
RACINJASON22 GEARHEAD Join Date: Jan 2007 Location: CENTRAL,PA Posts: 2,284	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon Isn't it so much nicer when something goes right for a change. Glad to hear it. RJ22 __________________ 72 SWB 2WD MY PROJECT 72 LWB 4X4 FUTURE PROJECT SUBSCRIBE HEREBOARD VENDORS HERE NORWOOD MEET SURVIVOR!

03-21-2007, 02:28 AM	#3
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon cool deal man, nice to hear the trucks running good, now you just need to put up some pictures cause you know how this board works...hahaha __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME

03-21-2007, 07:19 AM	#4
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,856	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon Did you get a mechanical or vac secondary carb? __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

03-21-2007, 08:26 AM	#5
connman Registered User Join Date: Jan 2006 Location: alabama Posts: 7	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon I also run a quick fuel carb on my BB454. I had it about two years and have no problems at all. Good Luck with yours.

03-21-2007, 07:11 PM	#6
mnunn454 Registered User Join Date: Dec 2006 Location: Rhode Island Posts: 602	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon A friend of mine had a bad experience with his Annular Booster Demon Carb. It had a machining burr left in one of the main jets (sloppy Quality Control). He discovered it when testing his 454 Corvette on the Chassis dyno. Picked up almost 100 HP when the day was done, most of which was attributable to the machining defect. As far as the carb design is concerned, I hear it's a killer. Personally, I prefer Holleys. I have a 770 CFM Street Avenger atop my 70 Elky's 454 and a 750 DP atop my 69 C-10's 454. Love them both. __________________ 69 C-10 SWB Fleetside 454/TH400 (For Sale) http://67-72chevytrucks.com/vboard/c...ct=1299&cat=12 70 El Camino 454 TH700 29 Model A 4-DR Sedan Deluxe

03-21-2007, 07:20 PM	#7
JHART 1972 Shorty Owner Join Date: Feb 2007 Location: Stationed in Cali , born and raised in PHX Arizona. Posts: 796	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon Can we see some pics of the new carb installed? __________________ 1972 Chevy Shorty C-10- Project In Work http://67-72chevytrucks.com/gallery/...ATT1721941.jpg- New Project

03-21-2007, 07:28 PM	#8
Rick Mills Senior Member Join Date: Dec 2003 Location: Colorado Posts: 351	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon You get to see the integrity of a company in how they handle problems. It's then that the good ones are separated from the bad ones. Glad to hear everything turned out alright. __________________ The Fastor Pastor '68 swb, 447 BBC/ 6-71 Weiand, Dual 950 Bigs Carbs/ 2 1/2" Header tubes - 4" collectors/ M-21 4speed: '70 swb; TH-400 - bagged & shaved. Looking for new engine or parts. Wife - Original {A Real Classic!}

03-21-2007, 09:50 PM	#9
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

03-21-2007, 10:15 PM	#10
72step Registered User Join Date: Nov 2000 Location: chimayo, nm, usa Posts: 898	Re: UPDATE!!--Quick Fuel Carb after defective BG Demon Thanks for the comments. It's mechanical. I'll post pics tomorrow. I'll have my wife do it for me because I just got surgery for carpal tunnel. So yes the wife is responding for me.



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