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Think I have a handle on carb problems #1683129
10/07/14 06:30 PM
10/07/14 06:30 PM
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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B3422W5 Offline OP
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Portage,michigan
Just had a nice chat with Patrick@ pro systems. We used to work together years ago, was nice to see how he is doing.
Anyhow this pro form 950 that was " stuck" on my little engine masters 318 I suspect wasn't the dynocarb I was told it was, and having sat around likely for years, it seems to be full of gremlins.
Rather than buying a new carb, gonna have these folks go trough it stem to stern, set it in the ballpark for this engine, so I at least know the carb is fresh and in good working order.
Probably should have done this before I ever raced the car..... Blowing out dirty needles, leaks, etc,etc
Thought about buying a new carb, but it's a bunch cheaper to have this one refurbished, and calibrated to my combo


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: Think I have a handle on carb problems [Re: B3422W5] #1683130
10/07/14 07:38 PM
10/07/14 07:38 PM
Joined: Jul 2004
Posts: 19,317
State of confusion
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Thumperdart Offline
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State of confusion
I now check/correct every hole in all carbs I work on and the last 850 Pro Form Race Carb I went through had emulsion holes too small and a few not even drilled all of the way through including the rear kill bleeds. If they do it right it should be tuneable for you w/just a few(hopefully)tweeks of the bleeds, t-slot jets and ifr`s...........


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.....
Re: Think I have a handle on carb problems [Re: Thumperdart] #1683131
10/07/14 08:14 PM
10/07/14 08:14 PM
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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B3422W5 Offline OP
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Portage,michigan
Thanks, thump.
He said they redo the emulsion circuits, will pretty much replace everything. I told him a few basics I know about how the carb is currently setup, he said it wasn't remotely close to where it needs to be.
At least this way I will know it works correctly and have a known good working unit. Something I definately don't have now.
Kinda makes me mad the guy I bought the motor from gave me this junk carb that in no way was used and properly tuned on an engine masters dyno.
When I went back and read the article on this motor, I noted they used a Holley 950hp, this is a proform... So definately not the carb I was told it was.
It is what it is I guess. Otherwise the little motor seems fine


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: Think I have a handle on carb problems [Re: B3422W5] #1683132
10/07/14 08:36 PM
10/07/14 08:36 PM
Joined: Jul 2004
Posts: 19,317
State of confusion
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Thumperdart Offline
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First, people need to keep it real and be straight up on parts or whatever it is. 2nd, tuneable circuits and lowered ifr`s make it WAY more tuneable and sensitive once it starts comin around. Good luck..........

Last edited by Thumperdart; 10/07/14 09:46 PM.

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.....
Re: Think I have a handle on carb problems [Re: B3422W5] #1683133
10/08/14 08:52 AM
10/08/14 08:52 AM
Joined: Feb 2006
Posts: 969
OH--IO
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360904 Offline
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OH--IO
I bought a 1 year old 780 Pro Systems carb from a gentleman that had it built for his 377ci ? ford fox body. I ran it that season and it was a improvement but I sent it to Patrick with all my specs that winter and what a difference. Great customer service!!!!

Re: Think I have a handle on carb problems [Re: B3422W5] #1683134
10/08/14 09:56 AM
10/08/14 09:56 AM
Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
an8sec70cuda Offline
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Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
I'm sure Patrick will have it working good when you get it back. He's done some great work for me.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax






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