Proform Carburetor
#2062859
04/27/16 06:13 PM
04/27/16 06:13 PM
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Joined: Nov 2014
Posts: 32 Santa Barbara, California
Edahlke
OP
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OP
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Joined: Nov 2014
Posts: 32
Santa Barbara, California
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Hi All, I have a 68 Charger with a 440 stroker that I am looking to replace the carburetor on. I had heard a lot of good things about Proform, and was looking at the 67205 which is 750 cfm, has vacuum secondaries and no choke (where I live it's warm pretty much year round). - Proform 67205 Anyone have anything negative to say about this carb, or is it a fine choice? Also, on the order page from jegs is says "New designed throttle lever with integrated Ford A/T kickdown, GM 700-R4 mounting holes and ability to mount brackets for Chrysler vehicles (black series)", so it sounds like I'll need some extra brackets, or maybe I can just take off what is already on my existing holley? Thanks for any feedback!
Last edited by Edahlke; 04/27/16 08:04 PM.
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Re: Proform Carburetor
[Re: Edahlke]
#2063023
04/27/16 10:19 PM
04/27/16 10:19 PM
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Joined: Jan 2003
Posts: 3,920 Richmond, Indiana
19swinger70
master
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master
Joined: Jan 2003
Posts: 3,920
Richmond, Indiana
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I had a Proform 750 DP on my 340 for a few years. It ran fine - hit really hard when accelerating.
I currently have a Edelbrock on the car because I realized that I never took the car to the track, so having a carb without a choke and 50cc accelerator pumps was probably overkill.
I might put it back on though - the E-brock just doesnt give me the kick in the pants that the Proform/Holley did.
1970 340 swinger. sublime 1967 barracuda fastback BB 55 Plymouth Project
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Re: Proform Carburetor
[Re: crackedback]
#2063382
04/28/16 02:13 PM
04/28/16 02:13 PM
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Joined: Nov 2014
Posts: 32 Santa Barbara, California
Edahlke
OP
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OP
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Santa Barbara, California
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Thanks for all the replies! I should've said I don't take the car to the track, however I do like to stomp on the gas at a stoplight if there is an import next to me. So it mainly gets kinda conservative use, but I do get on it from time to time. So perhaps 750 cfm is too small? The only drawbacks of mechanical secondaries is slight/moderately worse gas mileage? Also, if I change to mechanical secondaries, should I also change my distributor to mechanical advance? And the blurb in the description about needing some extra brackets for kickdown should be no big deal? Thanks for the help... I really appreciate it. I'm kind of a newb with carburetors, most of my experience is with TBI.
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Re: Proform Carburetor
[Re: Edahlke]
#2063413
04/28/16 02:50 PM
04/28/16 02:50 PM
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Joined: Jan 2003
Posts: 28,067 Irving, TX
feets
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Senior Management
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Irving, TX
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The 750 will give you good throttle response around town due to the smaller bores than what you'd find in a monster carb. It's hard to get some people to understand that you're not looking for a max effort engine. When you say stroker their eyes light up and they go on the quest for 800 hp. You can build a fun powerful engine without giving up good street manners. Go with your plan for a street car with good manners. Tuning will be easier and it'll be more forgiving on the street with the mild carb. A DP or 1050 cfm monster is not needed in this situation and can actually make the car less enjoyable to drive despite a theoretical 20 hp improvement. Here's the throttle linkage they refer to. It's a very common part.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Proform Carburetor
[Re: crackedback]
#2063446
04/28/16 03:59 PM
04/28/16 03:59 PM
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Joined: Jan 2003
Posts: 28,067 Irving, TX
feets
Senior Management
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Senior Management
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Irving, TX
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Lots of bad info out there.
A properly tuned DP will NOT get worse mileage than a performance choking vacuum secondary carb. Most of the mileage is how you use your right foot! A vacuum secondary carb is friendlier on the streets than a DP. The DP was designed for racing, not cruising. That's where it performs best. The VS carb was designed for street use. There is nothing wrong with putting one on the street. Total hp with properly tuned VS and DP carbs of the same size will not be appreciably different. The differences will be noticed during aggressive throttle movements. The power difference I referred to would be between different size carbs.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Proform Carburetor
[Re: crackedback]
#2063624
04/28/16 09:55 PM
04/28/16 09:55 PM
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Joined: Jul 2004
Posts: 19,317 State of confusion
Thumperdart
I Live Here
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I Live Here
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Posts: 19,317
State of confusion
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Lots of bad info out there.
A properly tuned DP will NOT get worse mileage than a performance choking vacuum secondary carb. Most of the mileage is how you use your right foot! EXACTLY, I had a guy on drag week, Ray(sixpackgut)even get 16+ mpg`s w/a 1050 Dominator I "fixed" for him and a few others as well. I don`t build/modify VS carbs myself only DP`s but I can and do get em damn near efi stable w/clean plugs n oil...........And agree a 750`s WAY small even for a streeter............THUMPERCARBS......760-900-3895
Last edited by Thumperdart; 04/28/16 09:57 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.....
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Re: Proform Carburetor
[Re: feets]
#2063890
04/29/16 11:11 AM
04/29/16 11:11 AM
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Joined: Oct 2003
Posts: 11,684 W. Kentucky
justinp61
I Live Here
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I Live Here
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W. Kentucky
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Lots of bad info out there.
A properly tuned DP will NOT get worse mileage than a performance choking vacuum secondary carb. Most of the mileage is how you use your right foot! A vacuum secondary carb is friendlier on the streets than a DP. The DP was designed for racing, not cruising. That's where it performs best. The VS carb was designed for street use. There is nothing wrong with putting one on the street. Total hp with properly tuned VS and DP carbs of the same size will not be appreciably different. The differences will be noticed during aggressive throttle movements. The power difference I referred to would be between different size carbs. Bull! A properly tuned double pumper will work as well as vacuum secondary. How you drive it will be the difference.
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Re: Proform Carburetor
[Re: DaveRS23]
#2064017
04/29/16 02:29 PM
04/29/16 02:29 PM
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Joined: Nov 2014
Posts: 32 Santa Barbara, California
Edahlke
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OP
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Santa Barbara, California
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OP isn't against tuning, just isn't nearly as experienced at it as everyone here. I'm not set on 750 CFM at all, if the board thinks that's clearly too small... no problem at all, I'm completely open to a larger one. That Street Demon does look pretty good though. I guess I should have just asked what everyone thought the best carb is for a 440 stoker with Edelbrock performer intake, and 3.55 gears that gets mostly mild mannered driving with the occasional WOT (for someone with limited tuning experience, but totally open to it). Again... I really appreciate the help.
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Re: Proform Carburetor
[Re: Edahlke]
#2064071
04/29/16 03:39 PM
04/29/16 03:39 PM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
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master
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Aurora, Colorado
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More info would be helpful. What size stroker? What compression ratio? What camshaft? What fuel (Pump gas? race gas? octane? E85?) What transmission Manual or automatic? If automatic, what stall speed converter? What rear gear and tire size? Is the intake a performer RPM or the smaller performer?
The deal with using a large carb, is it has less restriction and will make more power a WOT, but when driving on the street at 30 MPH, you will still be in the transition circuit, not the main metering circuit. This is not really a big deal if you know how to tune the transition circuit, but it is not something most people do.
A smaller carb will get into the main metering circuit sooner (more throttle angle at the same speed) and usually it is just tuned with a jet change.
What about the FiTech TBI EFI? Not that much more expensive and you don't have to pay extra for all the carb tuning parts (jets, bleeds, restrictions, power valves, accelerator pump cams, and nozzles, ect.) and gaskets.
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Re: Proform Carburetor
[Re: justinp61]
#2064159
04/29/16 06:31 PM
04/29/16 06:31 PM
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Joined: Jan 2003
Posts: 28,067 Irving, TX
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Senior Management
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Bull! A properly tuned double pumper will work as well as vacuum secondary. How you drive it will be the difference.
Are you going to tune it for him? Are you going to go back and retune it every time the weather changes? Instead of having a more difficult to tune carb he can run a VS and have an easier time. It's a street cruiser. The VS isn't going to hurt a thing.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Proform Carburetor
[Re: Edahlke]
#2064298
04/29/16 09:57 PM
04/29/16 09:57 PM
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Joined: Jan 2003
Posts: 12,025 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
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Posts: 12,025
Benton, IL.
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OP isn't against tuning, just isn't nearly as experienced at it as everyone here. I'm not set on 750 CFM at all, if the board thinks that's clearly too small... no problem at all, I'm completely open to a larger one. That Street Demon does look pretty good though. I guess I should have just asked what everyone thought the best carb is for a 440 stoker with Edelbrock performer intake, and 3.55 gears that gets mostly mild mannered driving with the occasional WOT (for someone with limited tuning experience, but totally open to it). Again... I really appreciate the help. It is likely that I will agree with many of the other respondents here that a 750 is a bit on the small side for a "440 stroker". But it would help a lot if we had the actual displacement of the engine and a couple of other pieces of info, too. Like which heads and what are the cam specs. You can get happy with either a vac secondary carb or mech secondary carb. The difference will probably be how much "tuning" one or the other will need to run the combo the best the way you drive. A couple more questions; how much "tuning" are you comfortable with? Do you have a wide band? And how much have you budgeted for a carb?
Master, again and still
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