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Pro Systems Carbs. #1431217 05/06/13 10:33 AM 05/06/13 10:33 AM
Joined: Jan 2003 Posts: 412 Hampton Va gtsdon OP mopar
gtsdon OP mopar Joined: Jan 2003 Posts: 412 Hampton Va	Currently trying to work the bugs out of my new motor combo and have narrowed it down to the Carb and converter. Pro systems claims their 4150 custom built unit is worth an additional 15-30 HP over my current 750 Holley HP. Was wondering if anyone is using their carburetors and what their opinions are related to performance and drivability. The new Carb they are specifying will be in the 830 CFM range. My current combo is- 418 Cubic Inch Small Block. RPM Air Gap INTAKE E-heads ported by Ryan Johnson. 621/624- 254/258 Roller camshaft. 10.4.1 Compression Ratio. 1-7/8 TTI headers into 3" exhaust. 727 transmission with 3500 stall PTC Converter. 29" tall tires and 430 Gears all in a 3520 lb Dart (With Driver). I feel the converter and Carb are holding this combo back (need 4800 stall ?) and would appreciate any advice you could provide. Best ET to date- 11.57 60�- 1.67 (not spinning) Previous 340 combo went 1.54 60' times on same chassis setup. 330- 4.777 1/8- 7.385 Mph 93.95 1000- 9.650 1/4 mile 11.57 @ 116.79 MPH

Re: Pro Systems Carbs. [Re: gtsdon] #1431218 05/06/13 11:28 AM 05/06/13 11:28 AM
Joined: Apr 2007 Posts: 2,028 Trumbull,CT. J jim sciortino top fuel
jim sciortino top fuel J Joined: Apr 2007 Posts: 2,028 Trumbull,CT.	I would think thatcombo should be good for AT LEAST 550hp, so something is way off.... Converter does sound tight and the 750 seems small.

Re: Pro Systems Carbs. [Re: gtsdon] #1431219 05/06/13 11:31 AM 05/06/13 11:31 AM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Don't know about that claim, but I have run their carbs for a few years now, both in a NA 408 motor and now in a 408 blown application - actually the same carb ( 950 that they modified for a blow threw application ). I have had good luck with them. Both were very close right out of the box. Fastest 300

Re: Pro Systems Carbs. [Re: gtsdon] #1431220 05/06/13 11:48 AM 05/06/13 11:48 AM
Joined: Jul 2012 Posts: 429 Washington skrews mopar
skrews mopar Joined: Jul 2012 Posts: 429 Washington	Something is off. That motor combo sounds strong. This ought to go low 11s as is IMO. The MPH is low, making me think that the motor isn't making the power it should or possibly trans problems / converter problems. Some time on the dyno might be revealing.

Re: Pro Systems Carbs. [Re: skrews] #1431221 05/06/13 04:44 PM 05/06/13 04:44 PM
Joined: Aug 2004 Posts: 2,128 sweden S sshemi top fuel
sshemi top fuel S Joined: Aug 2004 Posts: 2,128 sweden	I agree something is way off. I run 94mph in the 1/8 with my 408 with flat tappet, 3800lbs a fourspeed and a 750 carb. Untuned.

Re: Pro Systems Carbs. [Re: gtsdon] #1431222 05/06/13 04:53 PM 05/06/13 04:53 PM
Joined: Aug 2003 Posts: 43,274 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,274 Bend,OR USA	Did you build the motor? If so did you degree the cam in or align the dots? Have you tried changing the squirters yet? 1.67 is really slow 60 ft. times Are you foot stalling the converter as tight as it will go or are you flashing it from a specicfic RPM ? If not flashing try that at different RPM and see if it hurts or helps the car off of the line Same thing on the squirters, I've seen .08 60 ft. gains(1.54 to 1.46 ) by going from a #37 sqirters(both ends) to #31 Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Pro Systems Carbs. [Re: sshemi] #1431223 05/06/13 06:50 PM 05/06/13 06:50 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: I agree something is way off. I run 94mph in the 1/8 with my 408 with flat tappet, 3800lbs a fourspeed and a 750 carb. Untuned. 60 ft is definitely killing the Et and MPH is at least 4-5 too low. The 750 you are presently running is too small, but it's not your problem. Fuel system ( supply ) up to snuff? What are you running for timing and is the ignition system also up to par? Running a full exhaust? What is vacuum at idle? Try reading the plugs? What are you shifting at? Fastest 300

Re: Pro Systems Carbs. [Re: Cab_Burge] #1431224 05/06/13 08:07 PM 05/06/13 08:07 PM
Joined: Jan 2003 Posts: 412 Hampton Va gtsdon OP mopar
gtsdon OP mopar Joined: Jan 2003 Posts: 412 Hampton Va	Cab Burge, I did not build the motor. Ryan ported the heads and specked the combo. A local speed shop assembled the package. The cam was degreed in @ 104 per Bullets cam card. The car launches best around 1500 RPM, if I load the converter tighter than that the engine will 60� slower and will sometimes bog off the line. This is why I was pointing to the converter. I did bump the squirters up to 35s to get over a flat spot during street driving. I am currently running a FBO ignition and the Distributer was curved for this combo. Thanks for all the help and suggestions.

Re: Pro Systems Carbs. [Re: Crizila] #1431225 05/06/13 08:16 PM 05/06/13 08:16 PM
Joined: Jan 2003 Posts: 412 Hampton Va gtsdon OP mopar
gtsdon OP mopar Joined: Jan 2003 Posts: 412 Hampton Va	I am shifting the car at 6200. It pulls clean and hard after the launch. Currently running a holley blue pump with 7 psi. The exhaust is 3" and turns out in front of the rear tires. Timing is currently 22 initial and 34 total.

Re: Pro Systems Carbs. [Re: gtsdon] #1431226 05/06/13 08:43 PM 05/06/13 08:43 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: I am shifting the car at 6200. It pulls clean and hard after the launch. Currently running a holley blue pump with 7 psi. The exhaust is 3" and turns out in front of the rear tires. Timing is currently 22 initial and 34 total. Speed might not be too far off depending on exhaust restriction. 60' should be in the 1.40 range though. Tire dia., gear, convertor all look good to me. Carb jetting close to factory settings? What is fuel pressure through the lights? Floats set properly? Can you run it without the exhaust system to see if that makes a big difference? How do the plugs look? You could also try going up about 4 sizes in the jetting to see if that makes a difference ( depending on plug readings ). Running a compression check might be in order also. I do this with a new engine and at regular intervals ( every 20 passes or so ) just to verify all is well. Fastest 300

Re: Pro Systems Carbs. [Re: gtsdon] #1431227 05/06/13 09:29 PM 05/06/13 09:29 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut Drag Week Mod Champion
sixpackgut Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	Quote: Cab Burge, I did not build the motor. Ryan ported the heads and specked the combo. A local speed shop assembled the package. The cam was degreed in @ 104 per Bullets cam card. The car launches best around 1500 RPM, if I load the converter tighter than that the engine will 60� slower and will sometimes bog off the line. This is why I was pointing to the converter. I did bump the squirters up to 35s to get over a flat spot during street driving. I am currently running a FBO ignition and the Distributer was curved for this combo. Thanks for all the help and suggestions. while I wont argue with Don about ignitions, I am willing to bet your timing curve is to slow but even so, your still down on power. have you done any tuning or are you just aching to spend money on a carb with the hopes of it being perfect out of the box? Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: Pro Systems Carbs. [Re: sixpackgut] #1431228 05/07/13 07:56 PM 05/07/13 07:56 PM
Joined: Jan 2003 Posts: 412 Hampton Va gtsdon OP mopar
gtsdon OP mopar Joined: Jan 2003 Posts: 412 Hampton Va	Im not aching to spend money on a carb. I was simply asking for opinions between the HP 750 I already have compared to a 830 cfm larger throttle blade/ smaller venturi Pro System carbs. If my current carb is too small it could be contributing to why the motor is down on power. Just looking for others who have a similar engine combo and hoping to find out what is working for them.

Re: Pro Systems Carbs. [Re: gtsdon] #1431229 05/07/13 08:28 PM 05/07/13 08:28 PM
Joined: Oct 2009 Posts: 1,267 North, Alabama D-50 pro stock
D-50 pro stock Joined: Oct 2009 Posts: 1,267 North, Alabama	I think the 750 cfm is too small for your combo.. 7697561-CIMG0081.JPG (66 downloads) 1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...

Re: Pro Systems Carbs. [Re: D-50] #1431230 05/07/13 10:43 PM 05/07/13 10:43 PM
Joined: Jul 2010 Posts: 2,422 Pittsburgh PA Eric top fuel
Eric top fuel Joined: Jul 2010 Posts: 2,422 Pittsburgh PA	I may take my 850 Ray Murray off the Arrow...if I do you are welcome to try it...if it works for you we can talk.. 5.53 @ 125 1/8th on the launch control..more left in her!

Re: Pro Systems Carbs. [Re: gtsdon] #1431231 05/07/13 10:49 PM 05/07/13 10:49 PM
Joined: Jan 2007 Posts: 437 south central pa bdaz smblk mopar
bdaz smblk mopar Joined: Jan 2007 Posts: 437 south central pa	Quote: Currently trying to work the bugs out of my new motor combo and have narrowed it down to the Carb and converter. Pro systems claims their 4150 custom built unit is worth an additional 15-30 HP over my current 750 Holley HP. Was wondering if anyone is using their carburetors and what their opinions are related to performance and drivability. The new Carb they are specifying will be in the 830 CFM range. My current combo is- 418 Cubic Inch Small Block. RPM Air Gap INTAKE E-heads ported by Ryan Johnson. 621/624- 254/258 Roller camshaft. 10.4.1 Compression Ratio. 1-7/8 TTI headers into 3" exhaust. 727 transmission with 3500 stall PTC Converter. 29" tall tires and 430 Gears all in a 3520 lb Dart (With Driver). I feel the converter and Carb are holding this combo back (need 4800 stall ?) and would appreciate any advice you could provide. Best ET to date- 11.57 60�- 1.67 (not spinning) Previous 340 combo went 1.54 60' times on same chassis setup. 330- 4.777 1/8- 7.385 Mph 93.95 1000- 9.650 1/4 mile 11.57 @ 116.79 MPH we built a motor real close to yours and it has a 950hp and a 4,600 conv with 275 radials and will run in the high 10's with pump gas.If u do buy a carb do yourself a favor and check out apd carbs.I myself have had 4 prosystems and only one of them was worth talking about.I bought a apd and didn't have to touch it. 3120lb, small block, 10.5" tire, NA, through exhaust, full int, WITH 83/4 REAR, 9.0 at 150mph

Re: Pro Systems Carbs. [Re: bdaz smblk] #1431232 05/08/13 12:33 AM 05/08/13 12:33 AM
Joined: Apr 2009 Posts: 3,421 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,421 Toronto	I wouldn't buy anything from Patrick Lames if you paid me...but thats just me

Re: Pro Systems Carbs. [Re: mshred] #1431233 05/08/13 12:38 AM 05/08/13 12:38 AM
Joined: Mar 2005 Posts: 867 Bellevue, NE C Charger453 super stock
Charger453 super stock C Joined: Mar 2005 Posts: 867 Bellevue, NE	Pro Systems built me an E85 950 and it seems to work really well. Starts up easily, idles great, is very responsive and works well at the track. I even put in a wideband and the numbers were pretty good there too.

Re: Pro Systems Carbs. [Re: Charger453] #1431234 05/08/13 07:22 AM 05/08/13 07:22 AM
Joined: Mar 2003 Posts: 1,629 pa 572charger top fuel
572charger top fuel Joined: Mar 2003 Posts: 1,629 pa	pro systems on my hemi ,( dominator) picked up 2 tenths and 2 mph over my reworked 9375 dom ?? they work out of the box 606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back

Re: Pro Systems Carbs. [Re: 572charger] #1431235 05/08/13 08:33 AM 05/08/13 08:33 AM
Joined: May 2004 Posts: 12,410 Taxes & Virus's R-US, NY Dragula I Live Here
Dragula I Live Here Joined: May 2004 Posts: 12,410 Taxes & Virus's R-US, NY	Quote: pro systems on my hemi ,( dominator) picked up 2 tenths and 2 mph over my reworked 9375 dom ?? they work out of the box I like that whole engine combination you have...Might have to copy that on my next go around.... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Pro Systems Carbs. [Re: bdaz smblk] #1431236 05/08/13 08:56 AM 05/08/13 08:56 AM
Joined: Jan 2003 Posts: 412 Hampton Va gtsdon OP mopar
gtsdon OP mopar Joined: Jan 2003 Posts: 412 Hampton Va	bdazsmblk, What does your car weigh? If I could get mine to run low 11s I would be happy. By the way, I met you and your family at the MIR Mopar show a few years back. You guys have some awesome cars. Thanks for posting what worked for your combo.

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