AR Barry Grant Speed Demon 650 carb - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**LEEVON** · 05-12-2011, 01:05 AM

$220 shipped to the lower 48. Used Demon 650, vacuum secondary. Vacuum secondary is quick change, I'll even throw in a few springs and also return the carb to factory settings. Parts interchange with Holley and it's real easy for jetting, float settings, idle/air mixture, power valve, pump cam swaps. Fuel line and choke are not included, and this is an older model withough the "idleEZ" baseplate. Just like this one, I'll get an actual pic up this weekend:

**LEEVON** · 05-12-2011, 03:46 PM

nice carb, much more expensive new...

**LEEVON** · 05-13-2011, 10:24 AM

back up.

**LEEVON** · 05-14-2011, 08:59 PM

it's calling your name.

71 super · 05-14-2011, 09:41 PM

I am interested in the carb but have a few questions. Will a regular holley choke set up work on the carb? What power valve is in it currently and also what jets? One last question, are the back jets replaceable or is it a plate like a holley? Any problems with it? I know some have had issue with the demons especially the smaller ones not idling properly on the street etc.

**LEEVON** · 05-14-2011, 10:04 PM

I'm honestly not sure about the holley choke. I believe it has the stock 70/78 jetting and 6.5 power valve and I know it has the pink pump cam (will verify before shipping). I have jets, and can send it with any common size you want, also have some secondary springs I'll throw in a light, medium and heavy. Back jets are easy to change, just screw in the metering block like the fronts.

I got it to idle fine, with my cam I was able to pull 16" of vacuum with the idle/air screws about 1 turn out and it wasn't rich although it did take more than just bolting it on. I had a 725 road demon on there before (way too much cfm) and it was pig rich all the time, couldn't get the idle circuit to lean out.

71 super · 05-15-2011, 11:55 AM

I will take it. PM me your paypal and I will pay immediately. Thanks Harold

**LEEVON** · 05-15-2011, 02:41 PM

Awesome, I sent you a pm.

I pulled the bowls and cleaned up the carb a bit, because I don't think you're supposed to ship gasoline

and confirmed the stock 70/78 jets and 6.5 power valve are in. It's boxed and ready to ship.

Thanks!

05-12-2011, 01:05 AM	#1
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Barry Grant Speed Demon 650 carb $220 shipped to the lower 48. Used Demon 650, vacuum secondary. Vacuum secondary is quick change, I'll even throw in a few springs and also return the carb to factory settings. Parts interchange with Holley and it's real easy for jetting, float settings, idle/air mixture, power valve, pump cam swaps. Fuel line and choke are not included, and this is an older model withough the "idleEZ" baseplate. Just like this one, I'll get an actual pic up this weekend: __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids Last edited by LEEVON; 05-12-2011 at 01:10 AM.

05-12-2011, 03:46 PM	#2
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Re: Barry Grant Speed Demon 650 carb nice carb, much more expensive new... __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids

05-13-2011, 10:24 AM	#3
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Re: Barry Grant Speed Demon 650 carb back up. __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids

05-14-2011, 08:59 PM	#4
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Re: Barry Grant Speed Demon 650 carb it's calling your name. __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids

05-14-2011, 09:41 PM	#5
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,080	Re: Barry Grant Speed Demon 650 carb I am interested in the carb but have a few questions. Will a regular holley choke set up work on the carb? What power valve is in it currently and also what jets? One last question, are the back jets replaceable or is it a plate like a holley? Any problems with it? I know some have had issue with the demons especially the smaller ones not idling properly on the street etc. __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

05-14-2011, 10:04 PM	#6
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Re: Barry Grant Speed Demon 650 carb I'm honestly not sure about the holley choke. I believe it has the stock 70/78 jetting and 6.5 power valve and I know it has the pink pump cam (will verify before shipping). I have jets, and can send it with any common size you want, also have some secondary springs I'll throw in a light, medium and heavy. Back jets are easy to change, just screw in the metering block like the fronts. I got it to idle fine, with my cam I was able to pull 16" of vacuum with the idle/air screws about 1 turn out and it wasn't rich although it did take more than just bolting it on. I had a 725 road demon on there before (way too much cfm) and it was pig rich all the time, couldn't get the idle circuit to lean out. __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids Last edited by LEEVON; 05-14-2011 at 10:14 PM.

05-15-2011, 11:55 AM	#7
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,080	Re: Barry Grant Speed Demon 650 carb I will take it. PM me your paypal and I will pay immediately. Thanks Harold __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

05-15-2011, 02:41 PM	#8
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Re: Barry Grant Speed Demon 650 carb Awesome, I sent you a pm. I pulled the bowls and cleaned up the carb a bit, because I don't think you're supposed to ship gasoline and confirmed the stock 70/78 jets and 6.5 power valve are in. It's boxed and ready to ship. Thanks! Attached Images __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids Last edited by LEEVON; 05-15-2011 at 06:22 PM.

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