pro systems carb
+8
hienergy557
Lem Evans
nickbay
whitefield
D. Sea
DaveMcLain
whatbumper
chuck
12 posters
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pro systems carb
chuck January 25th 2015, 10:01 pm
The car I bought has a pro systems dominater carb. I'm not a fan of the carb, but it's what I got for now. It has power valve in it, 88 main 96 secondary. I've always run q fuel and they don't come with power valves. Would I be better to take them out and square the Jets.
chuck- Posts : 414
Join date : 2009-08-08
Re: pro systems carb
whatbumper January 25th 2015, 10:43 pm
There are benefits to both ways. Configure it to how you are comfortable.
whatbumper- Posts : 3024
Join date : 2009-11-11
Age : 44
Re: pro systems carb
DaveMcLain January 26th 2015, 8:50 am
chuck wrote:The car I bought has a pro systems dominater carb. I'm not a fan of the carb, but it's what I got for now. It has power valve in it, 88 main 96 secondary. I've always run q fuel and they don't come with power valves. Would I be better to take them out and square the Jets.
What's wrong with the carburetor?
DaveMcLain- Posts : 399
Join date : 2009-09-15
D. Sea- Posts : 2768
Join date : 2008-12-02
Age : 55
Location : Kentucky
Re: pro systems carb
whitefield January 26th 2015, 12:28 pm
power valve or no power valve depends on aplication an intended use .
whitefield- Posts : 2244
Join date : 2009-08-23
Age : 56
Re: pro systems carb
chuck January 26th 2015, 12:43 pm
Nitrous race application, nothing wrong. I always thought power valve were for the street.
chuck- Posts : 414
Join date : 2009-08-08
Re: pro systems carb
nickbay January 26th 2015, 5:30 pm
Patrick has a web site where you can ask anything about his carbs, even if you did not buy it directly.
You just need the carb number on the side.
http://prosystems.websitetoolbox.com/
You just need the carb number on the side.
http://prosystems.websitetoolbox.com/
nickbay- Posts : 61
Join date : 2009-09-04
Re: pro systems carb
Lem Evans January 26th 2015, 9:20 pm
chuck wrote:Nitrous race application, nothing wrong. I always thought power valve were for the street.
With the spray.....lose the p.v.
Lem Evans- Posts : 7445
Join date : 2008-12-03
Location : Livermore , Ky -
Re: pro systems carb
hienergy557 January 27th 2015, 9:11 pm
PV's are for fuel economy. Get rid of it.
No use on a race engine.
No use on a race engine.
hienergy557- Posts : 179
Join date : 2009-08-20
Age : 62
Location : Melbourne, Australia
Re: pro systems carb
DaveMcLain January 28th 2015, 9:09 am
hienergy557 wrote:PV's are for fuel economy. Get rid of it.
No use on a race engine.
This depends on what type of racing you're doing....
DaveMcLain- Posts : 399
Join date : 2009-09-15
Re: pro systems carb
kim January 28th 2015, 12:06 pm
Sure does. Some of the most fuel efficient carbs ever bolted to an engine were on NASCAR in the last years of carb engine requirements. Where pitting costs track time, a gallon of saved gas can make a huge difference in the outcome of a race.
Not everything tries to go in a straight line for 7 seconds.....
Even in N2O systems, power valve isn't always bad. The worst is where a plate is right below the carb and can really shock the air flow on the intial hit.
Not everything tries to go in a straight line for 7 seconds.....
Even in N2O systems, power valve isn't always bad. The worst is where a plate is right below the carb and can really shock the air flow on the intial hit.
kim- Posts : 700
Join date : 2009-06-27
Location : Tucson AZ
Re: pro systems carb
Lem Evans January 28th 2015, 1:44 pm
Dominators are no longer legal in NASCAR and they have long since caught the guys that were running spray.
Lem Evans- Posts : 7445
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Location : Livermore , Ky -
Re: pro systems carb
kim January 28th 2015, 2:17 pm
Lem Evans wrote:Dominators are no longer legal in NASCAR and they have long since caught the guys that were running spray.
Did NASCAR ever allow the 4500 series carberator? The fuel injection throttle body is 4500 series based... But in my short knowledge of the sport the carb of mandate had been the 4150
kim- Posts : 700
Join date : 2009-06-27
Location : Tucson AZ
Re: pro systems carb
Lem Evans January 28th 2015, 3:16 pm
FoMoCo paid for the development of the Dominator carb. It was 1st used on the Boss 429 NASCAR engines.
Lem Evans- Posts : 7445
Join date : 2008-12-03
Location : Livermore , Ky -
Re: pro systems carb
bbf-falcon January 28th 2015, 5:44 pm
hienergy557 wrote:PV's are for fuel economy. Get rid of it.
No use on a race engine.
Not true,Carb technology has changed. Like was said,visit ProSystems website. My 1390cfm SV-1 has pv's.
bbf-falcon- Posts : 8995
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Location : Jackson, Ohio
Re: pro systems carb
yellowhorse7 January 28th 2015, 7:14 pm
kim wrote:Lem Evans wrote:Dominators are no longer legal in NASCAR and they have long since caught the guys that were running spray.
Did NASCAR ever allow the 4500 series carberator? The fuel injection throttle body is 4500 series based... But in my short knowledge of the sport the carb of mandate had been the 4150
In modern day no..it was always a 4150 based deal.
yellowhorse7- Posts : 1382
Join date : 2009-11-16
Age : 98
Location : Polk County
Re: pro systems carb
Lem Evans January 28th 2015, 10:02 pm
Yep, it was always 4150 except when it wasn't 
Lem Evans- Posts : 7445
Join date : 2008-12-03
Location : Livermore , Ky -
Re: pro systems carb
yellowhorse7 January 29th 2015, 7:55 am
yellowhorse7 wrote:kim wrote:Lem Evans wrote:Dominators are no longer legal in NASCAR and they have long since caught the guys that were running spray.
Did NASCAR ever allow the 4500 series carberator? The fuel injection throttle body is 4500 series based... But in my short knowledge of the sport the carb of mandate had been the 4150
In modern day no..it was always a 4150 based deal.
yellowhorse7- Posts : 1382
Join date : 2009-11-16
Age : 98
Location : Polk County
Re: pro systems carb
Lem Evans January 29th 2015, 10:31 am
"Did NASCAR 'EVER' allow the 4500 series carberator"
That was the question.....ever is a long time. No mention of modern.
That was the question.....ever is a long time. No mention of modern.
Lem Evans- Posts : 7445
Join date : 2008-12-03
Location : Livermore , Ky -
Re: pro systems carb
Curt January 29th 2015, 11:09 am
Lem Evans wrote:"Did NASCAR 'EVER' allow the 4500 series carberator"
That was the question.....ever is a long time. No mention of modern.
Damn Kids!!!
Curt- Posts : 2791
Join date : 2009-02-08
Age : 62
Location : Henrietta, Texas but mostly on the road
Re: pro systems carb
Curt January 29th 2015, 12:18 pm
Holley: the leader in fuel delivery that developed and introduced the original Dominator® for NASCAR® racing and took carburetion to another level in 1969,
Curt- Posts : 2791
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Age : 62
Location : Henrietta, Texas but mostly on the road
Re: pro systems carb
kim January 29th 2015, 12:30 pm
Guess they did at least for a short time. I was only 6 yrs old in 69. Probably already block sanded a 55 chevy at time.
kim- Posts : 700
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Location : Tucson AZ
Re: pro systems carb
Lem Evans January 29th 2015, 1:04 pm
Curt wrote:Holley: the leader in fuel delivery that developed and introduced the original Dominator® for NASCAR® racing and took carburetion to another level in 1969,
Lem Evans- Posts : 7445
Join date : 2008-12-03
Location : Livermore , Ky -
Re: pro systems carb
chuck February 1st 2015, 7:23 pm
Changed to a qf1250, car ran a 5.86 @ 117. With the Pro Systems 1250 the best was 6.10 @ 115. Thanks Lem and Phil.
chuck- Posts : 414
Join date : 2009-08-08
chuck- Posts : 414
Join date : 2009-08-08
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