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New Holley 950 carb is here #1059789
08/23/11 02:45 AM 08/23/11 02:45 AM
Joined: Jan 2003
Posts: 31,045
Oregon
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AndyF Offline OP
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Oregon
Looks great. Holley added a ton of new features to this new line of carbs. There are so many new features I'm not going to bother trying to list them all. I like the AN fittings for the bowl and the dual bolt pattern. Adjustable throttle linkage is also cool as is the idle air bypass. Not sure about the bowl drain but I'll try it and see if I like it. The double sight glasses are a nice touch.

I'll get this carb on the dyno in the next few days and see how she compares to a Dominator. My guess is that this one will make pretty good power on my 514 motor. This is the biggest 4150 that I've ever seen. There is almost no venturi shape at all, it is almost a straight shot right down the throttle bores.

6790876-lead.jpg (477 downloads)
Re: New Holley 950 carb is here [Re: AndyF] #1059790
08/23/11 03:13 AM 08/23/11 03:13 AM
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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joedust451 Offline
super gas
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Branson, Mo.
Quote:

Looks great. Holley added a ton of new features to this new line of carbs. There are so many new features I'm not going to bother trying to list them all. I like the AN fittings for the bowl and the dual bolt pattern. Adjustable throttle linkage is also cool as is the idle air bypass. Not sure about the bowl drain but I'll try it and see if I like it. The double sight glasses are a nice touch.

I'll get this carb on the dyno in the next few days and see how she compares to a Dominator. My guess is that this one will make pretty good power on my 514 motor. This is the biggest 4150 that I've ever seen. There is almost no venturi shape at all, it is almost a straight shot right down the throttle bores.



Holley is really making a great comeback, nice to see a true american company staying alive, The customer service is great too.

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU
Re: New Holley 950 carb is here [Re: joedust451] #1059791
08/23/11 04:27 AM 08/23/11 04:27 AM
Joined: May 2004
Posts: 3,210
robin hood country
deaks Offline
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robin hood country
Have you dyno'd the motor with the older stock 950, be interesting to see the difference.
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
Re: New Holley 950 carb is here [Re: AndyF] #1059792
08/23/11 04:30 AM 08/23/11 04:30 AM
Joined: Feb 2003
Posts: 6,849
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fullmetaljacket Offline
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I gather this is not a "one size fits all" right?
But maybe the throttle bores are a true bigger size then current bores and some real flow numbers can be had. If it is truly a much better design than maybe some custom carb shops will use it as the baseline piece to make their 1000 CFM and above units.
I can't wait to hear what CFMs you find under its belly.
Re: New Holley 950 carb is here [Re: fullmetaljacket] #1059793
08/23/11 09:59 AM 08/23/11 09:59 AM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
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Labratt Offline
Good Ol Randy B!
Labratt  Offline
Good Ol Randy B!
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Clinton Twp... north of Deetro...
Andy,Thanks for doing the "leg work" on the NEW...and IMPROVED 950HP!!! I'll be shopping for a Holley this winter,for my 440 GTX...so this info will be of great interest to me! Can't wait to hear the results! Thanks,again! Randy B.

Re: New Holley 950 carb is here [Re: deaks] #1059794
08/23/11 10:50 AM 08/23/11 10:50 AM
Joined: Aug 2003
Posts: 3,245
Between a rock & a hard place
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cudadoug Offline
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Between a rock & a hard place
Quote:

Have you dyno'd the motor with the older stock 950, be interesting to see the difference.
Mick



That's what I was thinking. Also the cost...
Re: New Holley 950 carb is here [Re: AndyF] #1059795
08/23/11 11:51 AM 08/23/11 11:51 AM
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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BradH Offline
Taking time off to work on my car
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Quote:

...This is the biggest 4150 that I've ever seen. There is almost no venturi shape at all, it is almost a straight shot right down the throttle bores.


IIRC, the new 950 has a 1.59" venturi, compared to the 1.56" of the new 850 version of the same carb. Yeah, that's big, especially for a downleg booster.

Can you provide a top-view shot of the venturi?

Re: New Holley 950 carb is here [Re: cudadoug] #1059796
08/23/11 11:55 AM 08/23/11 11:55 AM
Joined: Jan 2003
Posts: 31,045
Oregon
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AndyF Offline OP
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Oregon
I don't think I'll bother doing a comparison with the Holley 950 HP. The 950 HP was a 1.375 venturi which is actually a fairly small carb. This new 950 is a 1.60 venturi which is very large.

The closest carb to this is what was called the 1000 HP. Those had a 1.56 venturi. I've run the 1000 HP on a lot of combinations and they make pretty good power on the dyno.

I'm just going to compare this 950 to my 1150 Dominator and see how it stacks up. I'm sure it will be down on power a little bit due to the 4150 bore spacing but that is to be expected.

The key point is that if you need a big carb, and you are limited to a 4150 bolt pattern for some reason, then this is the biggest 4150 that Holley as ever made.
Re: New Holley 950 carb is here [Re: AndyF] #1059797
08/23/11 11:59 AM 08/23/11 11:59 AM
Joined: Jan 2003
Posts: 31,045
Oregon
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AndyF Offline OP
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The linkage can be set for 1:1 operation. Also notice the sight glass on linkage side of the bowl and the bowl drain.

6791162-linkage.jpg (431 downloads)
Re: New Holley 950 carb is here [Re: BradH] #1059798
08/23/11 12:01 PM 08/23/11 12:01 PM
Joined: Jan 2003
Posts: 31,045
Oregon
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AndyF Offline OP
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Oregon
Here is a top view.

6791166-top.jpg (367 downloads)
Re: New Holley 950 carb is here [Re: fullmetaljacket] #1059799
08/23/11 12:04 PM 08/23/11 12:04 PM
Joined: Jan 2003
Posts: 31,045
Oregon
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AndyF Offline OP
I Win
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Oregon
Right, this is not a "one size fits all" type of carb. The 950 HP is a good street/strip carb but I don't think a person would want to put this 950 on a street car unless they are running a really large engine.

I use a 1.375 carb on my street 512. I wouldn't run this 1.60 carb on anything smaller than a 572 on the street. It is a race carb, not a street carb.
Re: New Holley 950 carb is here [Re: AndyF] #1059800
08/23/11 12:35 PM 08/23/11 12:35 PM
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard Offline
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Andy, got an underside shot of the base?
I'd like to see that dual bolt pattern
Also I assume these still have the 1.750" throttle bore?
Re: New Holley 950 carb is here [Re: AndyF] #1059801
08/23/11 04:24 PM 08/23/11 04:24 PM
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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BradH Offline
Taking time off to work on my car
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Wish my junk was running again so I could some different carbs, instead of just pretty pictures of them.
Re: New Holley 950 carb is here [Re: AndyF] #1059802
08/23/11 04:51 PM 08/23/11 04:51 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Quote:

Here is a top view.



Andy, I see that its a 2 circuit carb... I wonder
how it will be in a cruise aspect(most Holley's tend
to run fat at cruise)
Re: New Holley 950 carb is here [Re: BradH] #1059803
08/23/11 04:53 PM 08/23/11 04:53 PM
Joined: Oct 2005
Posts: 8,879
Ontario, Canada
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Stanton Offline
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So what would you recommend for a 526" RB stroker primarily street car.

Also, isn't this the carb that got some mention in your book ???
Re: New Holley 950 carb is here [Re: AndyF] #1059804
08/23/11 05:00 PM 08/23/11 05:00 PM
Joined: Oct 2005
Posts: 164
Savannah, GA
mopar400 Offline
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Savannah, GA

1965 Fury II 1970 Challenger 440, 509 cam, 11:1 w/ 452 iron heads, 6.99 1/8, 11.29@ 120mph 1/4 (1999 Magnolia Drag strip track champion) 1992 Jeep XJ Crawler
Re: New Holley 950 carb is here [Re: Stanton] #1059805
08/23/11 05:28 PM 08/23/11 05:28 PM
Joined: Jan 2003
Posts: 31,045
Oregon
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AndyF Offline OP
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Oregon
I didn't mention this carb in my book. These carbs are brand new.
Re: New Holley 950 carb is here [Re: roadhazard] #1059806
08/23/11 05:29 PM 08/23/11 05:29 PM
Joined: Jan 2003
Posts: 31,045
Oregon
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AndyF Offline OP
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Oregon
Here is a shot of the base.

6791631-base.jpg (349 downloads)
Re: New Holley 950 carb is here [Re: roadhazard] #1059807
08/23/11 05:32 PM 08/23/11 05:32 PM
Joined: Jan 2003
Posts: 31,045
Oregon
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AndyF Offline OP
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Oregon
Gasket picture. This gasket came in the box from Holley. I couldn't find a part number on their website. No idea if they have a four hole version of it or not. I sent them an email but haven't heard back yet.

Yep, bore size is still 1.75.

I'm working on a 4500 to 4150 adapter plate. These new carbs will bolt directly on to a 4500 intake, but some 4500 intakes have a big plenum and the carb base isn't quite big enough to cover it. I'm sure we'll see some new products to solve that problem in the near future.

6791639-gasket.jpg (288 downloads)
Re: New Holley 950 carb is here [Re: AndyF] #1059808
08/23/11 05:33 PM 08/23/11 05:33 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Quote:

I didn't mention this carb in my book. These carbs are brand new.



Andy whats the model(or part number) for this new carb
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