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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034681
07/18/11 12:56 AM
07/18/11 12:56 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
BIG HELLO to my 2 favorite Mike's!   Raff...yes I jetted up 4 on the primaries only...both carbs. Didn't change the MPH at all on the Demon. Went from 78 to 82. Went from 80 to 84 on the Holley...picked up 2 mph!  Still can't believe how darn close these carbs performed on my car!  It was HOT...but felt GREAT to do some SMOKY burn-outs and run the 1/4 again!   Since Drag Times has no Ubly listing to figure the DA,I had to take data from Lapeer Dragway..the closest track. The average DA there from 1:00 to 5:30 was 2955. They're saying my corrected times would be 11.23 @ 121. I'll take it! 
Why didnt you jet the secondaries also 
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034684
07/18/11 07:06 AM
07/18/11 07:06 AM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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Randy Glad you had a good day and didn't break anything. Does the holley have a pv in the rear?. Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034686
07/18/11 09:50 AM
07/18/11 09:50 AM
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Joined: May 2004
Posts: 12,415
Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,415
Taxes & Virus's R-US, NY
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Quote:
FINALLY got a break from truck break-downs,and trying to sell our house!  If I didn't use the calculator and average the 4 runs each with these 2 carbs...I wouldn't believe it! Not sure what the DA was at the track(Ubly)yesterday...but it was HOT and humid!  When we started running @ 1:15 it was 85 degrees,and 90 degrees on the final run at 5:30. Since there weren't a lot of cars for the T&T session..and my car was running cool...only 170-175* after each 1st run,I hot-lapped it 4 times,for 8 total runs. Never went over 185 degrees all day!  ***RESULTS*** Holley 950HP- Avg. from 4 runs..60' 1.67...E.T..11.53...MPH..116.5 Race Demon RS- 4 run avg.- 60' 1.69...E.T..11.51...MPH..117! I'd definately call it a DRAW! BOTH carbs worked well!  I attribute the lousy 60' times to NO starting line prep!  Didn't see them spray at all! I would be happy to own either one of these carbs! Thanks to Brad Haak,for the use of the Race Demon...and Russ Dudek,for the use of his Bigs 950HP Holley! 
So when are you going to test an SV1?
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034687
07/18/11 10:36 AM
07/18/11 10:36 AM
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Joined: Jan 2003
Posts: 17,907
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,907
S.E. Michigan
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Nice to hear you got the car out as planned Sure seems like the carbs were both in the ballpark!
Rich H.
Esse Quam Videri
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034690
07/18/11 11:08 AM
07/18/11 11:08 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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So Randy... your lookin to sell your house and move down our way.... sorta picked a bad time to sell... best of luck on it
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034691
07/18/11 11:17 AM
07/18/11 11:17 AM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Good results and they are real close et wise but agree a little tweeking may favor one over the other. How did you get your water temps down in that weather?
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034693
07/18/11 11:50 AM
07/18/11 11:50 AM
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Joined: Jan 2003
Posts: 4,852
KENTUCKY
69CHARGERMD
master
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master
Joined: Jan 2003
Posts: 4,852
KENTUCKY
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Quote:
I lost 5 lbs. from perspiring so much at the track
That should be good for some ET...lol
Glad to hear you got the car out,,and had fun.
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034703
07/18/11 07:02 PM
07/18/11 07:02 PM
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Joined: Mar 2009
Posts: 2,470
Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,470
Sydney,Australia
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good to hear your results Randy,what was the bg sleeved to cfm wise ?
Tex
New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034705
07/18/11 08:49 PM
07/18/11 08:49 PM
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Joined: Mar 2009
Posts: 2,470
Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,470
Sydney,Australia
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Randy,
so would you say the BG was bigger/flowed more than the Holley ?
just trying to correlate it to my experiences re finding where the motor simply cannot use more air/bigger carb
Tex
New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034707
07/18/11 09:36 PM
07/18/11 09:36 PM
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Joined: Nov 2003
Posts: 4,027
Dearborn Hts, MI
Sledge_57
master
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master
Joined: Nov 2003
Posts: 4,027
Dearborn Hts, MI
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So what about on the street Randy, I'm still looking to make a move from the MD-850 and it's wonderful idle qualities....
That's what you used to run right?
Doug
1967 "Pedal Car" 500" low deck , TF 727, 4.30 Locker
Best to Date: 11.67 @ 114.9 1.64 60ft
"Kids in cars cause accidents. Accidents in cars cause kids..."
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034709
07/18/11 11:52 PM
07/18/11 11:52 PM
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Joined: Feb 2005
Posts: 4,318
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,318
Prospect, PA
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Glad you got out and had some fun.
I think the carb is actually 870 cfm. It has the 1.375 venturi.
Hard to believe that it would want that much jet.
Last edited by BSB67; 07/18/11 11:54 PM.
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034715
07/19/11 02:41 AM
07/19/11 02:41 AM
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Joined: Mar 2009
Posts: 2,470
Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,470
Sydney,Australia
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thanks Randy.
just shows what your motor wants,similar to my experience
my 440 needed more than a ultra hp950,loves my bg 825(bigger),didn't gain with a prosystems hp1000 based carb(biggest).
my heads and cam are the restriction.cam will change - not the heads
can't / won't step up to the 10.0's - too many extra regs and rules
you have a great looking GTX
Tex
New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: tex013]
#1034717
07/19/11 01:35 PM
07/19/11 01:35 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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Randy
I run a stock 950 hp, last time our in 90 degree weather, i had 84 in the back no pv and 76 in the front, that was with open headers and 18" collector extensions. Car was nearly 2/10 off my best but still managed over 128 mph, also with the new tubular control arms it was hitting the tyres a lot harder making it spin.
On the chassis dyno last year it liked 76 front and back with pv's and full exhaust but ran pb with 2 sizes up.
Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034719
07/19/11 08:41 PM
07/19/11 08:41 PM
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Joined: Apr 2007
Posts: 47
S.E. Michigan
TruPerformance
member
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member
Joined: Apr 2007
Posts: 47
S.E. Michigan
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Hi Randy, Nice meeting you out at Ubly Sat. Denise spent the day getting comfortable with her RR, which was the whole point of the trip. It had been nearly 10 years since her last run down the track, plus we wanted to be sure I remembered to tighten all the bolts!  once we were convinced, and she got comfortable, she did great, the times, not so much. Time to start tuning. Best of the day was 14.42 @ 93. Should be able to tune about a second out of it, plus get some more with better air. This motor was never planned to be permanent, just kept it to get her in the groove of racing again. Will spend the rest of this year playing, then put something a little faster in it over the winter. Hope to see you out there again! Brent
1963 Belvedere (mine)
1969 Roadrunner (wife's)
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034723
07/20/11 08:21 PM
07/20/11 08:21 PM
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Joined: Feb 2005
Posts: 4,318
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,318
Prospect, PA
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Quote:
Harper..in St. Clair Shores!
When is this?
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034725
07/21/11 05:37 AM
07/21/11 05:37 AM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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That's a beautiful car you've got there Randy, dont ever change it you'll spoil it.
JMHO Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034727
07/21/11 08:57 PM
07/21/11 08:57 PM
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Joined: Feb 2005
Posts: 4,318
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,318
Prospect, PA
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No. We'll be up the first week in August. A few years ago we came up about this time of year. Had to get off at Telegraph as they were working on I-75. It was about midnight when we hit Taylor, I believe, and there was a really big cruise going on. Guys cruisin with slicks, burnouts going on regularly, people lining the street partying, for miles, most parking lots full of cars and people. My kids have never seen anything like it and thought it was cool. We've done the MtClemens thing a few years ago, but it was nothing like the Taylor thing
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Re: HOLLEY 950HP VS. RACE DEMON RS TEST RESULTS!!!
[Re: Labratt]
#1034733
07/24/11 12:53 AM
07/24/11 12:53 AM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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The Demon is set up w/ 1.425" sleeves in their "825" config, although BG stated back when the Gold Claws were released originally that this configuration flowed 980 cfm @ 1.5" (standard 4-bbl rating pressure). I picked it up from a board vendor a couple of years ago as a "race ready" low-use piece, which turned out to have been a bit effed up and required some parts to be sent back to BG to be fixed.  Since Randy wasn't sure what type of carb he wanted to run w/ his GTX, I offered to let him test w/ it. I'd set it up for the expected conditions based on his input and IIRC the only thing he changed was going from .035 to .040 squirter size. Randy - I never asked you if the Bigs "950" is an original Holley 80496 tuned by Bigs (1.375" venturi) or one of the carbs they sell w/ the Proform "950" main body that has a 1.450" venturi. Do you know?
Last edited by BradH; 07/24/11 01:06 AM.
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Zippy...looks like the carb tweaking here at home worked out pretty well!...couldn't get 2 carbs to run pretty much identical numbers like that again!...IMHO! 
I honestly don't believe I'll see a 10 second slip until the Eddy's get ported!...hopefully this winter! 
Randy B. 
Maybe just another getting older deal! 
Maybe he'll chime in if he reads this! 
Who knows..maybe if I jetted the secondaries as well,maybe it would have gone faster?!! 
What kind of goodies do you have in the 440? I might be able to help with a spare manifold or two,if they're an improvement over what you already have. Let me know! 
My next time out most likely won't be until Milan Mopar Day,the saturday before Labor Day. Hope the temps are moderate then...75* or cooler! 
