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Holley 5200 carb

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old28racer
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Holley 5200 carb

Post #1 by old28racer » Sat Aug 10, 2019 5:44 pm

Guy over on the 240/300 site said I might be able to get some real time information on this 2bbl carb. Anyone using one? How is the gas mileage if you stay out of the secondary most of the time?
I am currently running a Holley 2300 350cfm that uses .061 jets & 8.5 power valve. My city mileage is real poor at 6-8 mpg, highway not to bad at 15.5 mpg flat ground at sea level. The motor is a fresh stock rebuild with headers and dual 2 1/2" exhaust. The carb is mounted on a 300 log intake manifold with a 2x1 adapter. The original 1bbl hole has been opened up some, maybe 25-35% but it is still very restrictive.
Bad Day Racing Is Better Than A Day In The Stands :mrgreen:

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chad
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Holley 5200 carb & potential MPGs ?(?on what?)?

Post #2 by chad » Sat Aug 10, 2019 6:14 pm

I don't C ur specifications in ur sig (truck? which one? rear gear/transmis?).
And think even if ona 240/300 ci - mi would B in the hi teens to low 20s? but can't say.

For the very low mileage U quote I'd say U have other issues than wrong carb match to motor/weight.
Some of us call that carb the Pinto carb (or Weber 32/36) as that's one of several places it wuz used. Also a Heep 6 (~250/4L).

As I recall 1 other guy tried to run a car carb on his truck (or wuz it U?). U may want to search his thread. I believe he tried different jets & other rebuilds w/o satisfaction.
Last edited by chad on Sun Aug 11, 2019 1:27 pm, edited 1 time in total.
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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Re: Holley 5200 carb

Post #3 by old28racer » Sat Aug 10, 2019 10:50 pm

3.73 gears, C4 trans, Standard long bed !971 F250, Run around empty 98% of the time. Truck runs great, 19" vacuum, Base timing at 17* btdc, Full on mechanical advance 34* btdc. I will be getting a new wideband AF unit next week to see where the carb/motor are right know.
Bad Day Racing Is Better Than A Day In The Stands :mrgreen:

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Re: Holley 5200 carb

Post #4 by papawsfalcons » Sat Aug 10, 2019 11:14 pm

Chad , do you know if the pinto webber 32/36 is rejetted or stock when used?

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Re: Holley 5200 carb

Post #5 by StarDiero75 » Sun Aug 11, 2019 3:04 am

I done heard about this before. I believe the Holley 5200 and the Weber 32/36 are a little underpowered for the 300. I currently run the weber on my 200 and I'm constantly fiddling with it and i cant ever seem to get the jets right. It runs lean when it should be rich, or rich when it should be lean.

May i ask why you haven't just got a 2bbl or 4bbl manifold (with 2bbl adapter if you wish)? You could easily go with an autolite 2100 with 1.08 or 1.14 Venturi and probably be fine.
--1965 Ranchero w/1966 200, dual friction diaphram 9" Modern Driveline clutch and billet flywheel all balanced, 1985 SVO WC T5 with front shift, 1966 2.8 Ford 8", Weber 32/26 with VI adapter, CRT Performance HEI.
--1961 Studebaker Lark VI, OHV 170 l6 in the process of being resurrected. But it lives
--Creator of the only Weber 32/36 conversion video.

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Holley 5200 carb ona truck

Post #6 by chad » Sun Aug 11, 2019 7:54 am

papawsfalcons wrote:Chad , do you know if the pinto webber 32/36 is rejetted or stock when used?


viewtopic.php?f=2&t=79610

stoped my search over there on page 4 or 5 w/the above (but just scrolled thru index pages). Not the right thread~
Search w/the Search Function'n carb name...
as stated he tried several diff jets & more...
:twisted:
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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Re: Holley 5200 carb

Post #7 by bubba22349 » Sun Aug 11, 2019 1:13 pm

old28racer wrote:Guy over on the 240/300 site said I might be able to get some real time information on this 2bbl carb. Anyone using one? How is the gas mileage if you stay out of the secondary most of the time?
I am currently running a Holley 2300 350cfm that uses .061 jets & 8.5 power valve. My city mileage is real poor at 6-8 mpg, highway not to bad at 15.5 mpg flat ground at sea level. The motor is a fresh stock rebuild with headers and dual 2 1/2" exhaust. The carb is mounted on a 300 log intake manifold with a 2x1 adapter. The original 1bbl hole has been opened up some, maybe 25-35% but it is still very restrictive.


That 2 X 1 adapter isn't helping you I think if you want better MPG I would just go back to a 1V carb like a Carter YF, a Holley 1940, or the best one for MPG a 1968 Autolite 1101. I ran the Holley 1940 and Autolite with a DuraSpark II ignition on my 1965 F350 300 / 4 speed NP435 / with 4.88 or 5.13 rear gears, 235 75 16 duely and got very good around town economy compared to your combo. Good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: Holley 5200 carb

Post #8 by old28racer » Sun Aug 11, 2019 3:24 pm

bubba22349 -- I am just trying to get information on different carbs that will work on a 300".
First I would like to see what best mileage I can get with my current setup (2x1 adapter, 300 log intake & Holley 2300). The current highway mileage at 15.6 is good for a "barn door 1971 f250". If I can't get my city mileage into the12-13 mpg range with the 2300 carb I will try a Edelbrock C intake.

The reason I liked the 5200 was that it has a small primary that I would cruise on 95% of the time. Maybe to small for a stock 300 motor? Do you know bore size of the 5200 primary & the YF/YFA carb?

If the manifold change does not work for the mileage I am looking for I will try the 5200, then the YF/YFA or the Autolite 1101.
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Re: Holley 5200 carb

Post #9 by bubba22349 » Sun Aug 11, 2019 6:55 pm

The Holley 5200 is based on the Weber 32 / 36 so it also has a primary bore of 32 MM or roughly 1.260 rounded off in inches, the secondary bore is 36 MM or 1.420 inches rounded off. Most of the Ford versions flow 270 CFM measured at 3" HG, Pri. Venturi measures in at 26 MM secondary is 27MM. There is one version said to only flow 235 CFM its Pri. Venturi measures 23 MM this is one to for sure stay away from for your 300 big six.

These carb's were found on the imported Mercury baged Capri in 1971 to 74 2.0l L4 and the V6 engines, plus 1977 to 82 2.3l L4 engines in Pinto's, US made Fox body Capri & Mustangs, Fairmont, Zepher, ect. It was also used on severial GM models with 2.5l L4 engines too. Like the 1973 Vega and the 1977 & 78 Chevy, Pontiac and Olds 2.5l L4 engines.

I don't have a Carter YF off to measure currently so my best guess is that they are around 1.500, 1.625, or maybe even up to 1.750 throdle bore size. Hope that is of some help to you, good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: Holley 5200 carb

Post #10 by Blairsville Ed » Sun Aug 11, 2019 9:15 pm

1958 F100. 240 4 on the tree. 3.70

I’m currently running a Holley 5200.
My question is..... has anyone installed a sync kit?
It would convert the carb to a standard 2 barrel without the extra cost and work of installing a Motorcraft 2100.
Just wondering if anyone has done this and how did it perform.

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Re: Holley 5200 carb

Post #11 by old28racer » Sun Aug 11, 2019 11:21 pm

bubba22349 --- Thanks for the information on the 5200 & YF/YFA sizes. Do you think a 5200 is to small cfm flow for a stock 300" motor? Remember this is just to improve city mileage.

Blairsville Ed ---- If I may ask what size inline 6 motor are you running the 5200 on?
What kind of gas mileage do you get with your setup?
Bad Day Racing Is Better Than A Day In The Stands :mrgreen:

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Re: Holley 5200 carb

Post #12 by bubba22349 » Mon Aug 12, 2019 12:16 am

IN a way it's a bit small since its used on L4 engines that are about half the size of a 300 or 4.9l, but for strictly low speed city driving it could work out ok besides the Carter 1V isn't really all that big eigher. I do think that two or three 5200's might be interesting on a performance street 300. Good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: Holley 5200 carb

Post #13 by StarDiero75 » Mon Aug 12, 2019 6:22 am

I know they make 2bbl intakes for the 300 man, I'd just go that route and get a normal autolite 2100 man or keep using the 350cfm. The funnel doesn't do you any good, its not breathing like it should, especially for that big of an engine.

Think about it, minimum size on a 289 or 302 is a 2bbl, why did they not do that stock on the 300? Thats kinda screwy.
--1965 Ranchero w/1966 200, dual friction diaphram 9" Modern Driveline clutch and billet flywheel all balanced, 1985 SVO WC T5 with front shift, 1966 2.8 Ford 8", Weber 32/26 with VI adapter, CRT Performance HEI.
--1961 Studebaker Lark VI, OHV 170 l6 in the process of being resurrected. But it lives
--Creator of the only Weber 32/36 conversion video.

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Re: Holley 5200 carb

Post #14 by drag-200stang » Mon Aug 12, 2019 8:45 am

StarDiero75 wrote:I know they make 2bbl intakes for the 300 man, I'd just go that route and get a normal autolite 2100 man or keep using the 350cfm. The funnel doesn't do you any good, its not breathing like it should, especially for that big of an engine.

Think about it, minimum size on a 289 or 302 is a 2bbl, why did they not do that stock on the 300? Thats kinda screwy.

Plus ,the suck pulse of a 302 is about 38 ci. and a 300 is is 50...Makes for a good argument for the two barrel.
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Holley 5200 carb

Post #15 by chad » Mon Aug 12, 2019 10:52 am

Blairsville Ed wrote:...I’m currently running a Holley 5200.
My question is..... has anyone installed a sync kit?
It would convert the carb to a standard 2 barrel...
Just wondering if anyone has done this and how did it perform.

Yes, and got assembly of jets, swapped around it still was not right. Didn't mess w/other prts tho.

The owner ('82 or whenever they put the 6 ina Toy heep) had a previous person tie the two together. This meant the 2 were all ways "on". No longer progressive. I kept my eye on it cuz its same displacement as my falcon 250/4L...

Ran fine, plenty power - just stunk, slightly perceptible smoke - too rich (up on jets, dwn - never right). I wasn't gunna mess beyond jets, he was happy. To me they (2v) need to go thru that smooth transition. Put it back the way its designed or get it outta the shop. He went home happy (not me)...
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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Re: Holley 5200 carb

Post #16 by old28racer » Mon Aug 12, 2019 12:29 pm

Don't know why any one would tie the progressive together to make direct all on linkage, not how it is to operate. Might as well run a 2100/2150 if that is what he wanted. I think the small primary to cruise around on most of the time would work out well if you can get the right jet combination setup.

Do you know what the stock jetting were?
Is there a separate jet for the Primary & one for the secondary?
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Re: Holley 5200 carb

Post #17 by Blairsville Ed » Mon Aug 12, 2019 2:18 pm

1968 F100. 240

It’s a 1968 F100 with a 240. I have put in the Chevy rocker arms, milled the deck to zero, milled the head .030, three angle valve job with some minor porting, efi exhaust, milled the intake and made an adapter plate.
Gas mileage ... 15-16, the same as I got with the Carter YF.
I think I’ll make the parts necessary to sync the Holley 5200. I’m already using the 5200 so it will be a no cost trial. If it performs well, I may convert to a 2100.

I actually got better gas mileage with the engine in stock form with the Carter YF. About 18 mpg.
The carb came with 140 primary barrel main jet, 132 secondary barrel main jet
#50 idle jet on both barrels
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Re: Holley 5200 carb

Post #18 by THE FRENCHTOWN FLYER » Mon Aug 12, 2019 2:43 pm

I have an air filter / flame arrestor for one of those carbs if anybody is interested PM me.

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Re: Holley 5200 carb

Post #19 by old28racer » Tue Aug 13, 2019 2:38 pm

I know where you guys are going with the small engines the 5200 was used on. I really think that this carb jetted correctly from a Air Fuel Wideband Gauge would be great for around town 35-45 mph cruising that I do 95% of the time. When you kick the secondary in it will provide the extra acceleration you need. With the throttle kicked in & both Pri/Sec open you will have more cfm air flow than with a YF 1bbl. This would be done on an open 4bbl intake with a 2x4 adapter so it will flow all the air the carb can pull in.
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Holley 5200 carb v Webber 32/36

Post #20 by chad » Tue Aug 13, 2019 7:24 pm

that's the theory, good luck on the execution.
Try what the brothers have said, get back to us.
We all need more info on these carbs~
:thumbup:
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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Re: Holley 5200 carb

Post #21 by old28racer » Wed Aug 14, 2019 1:45 pm

Blairsville Ed --- Thanks for the pictures of the 5200 carb mounted. If you have some pictures of the modified log intake while being built I sure would like to see them. Also do you have some closeup of the mechanical choke mount & the throttle mount? They would sure be of help. That is a real clean setup.
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Re: Holley 5200 carb

Post #22 by Blairsville Ed » Wed Aug 14, 2019 8:15 pm

heres a few pics
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Re: Holley 5200 carb

Post #23 by Blairsville Ed » Wed Aug 14, 2019 8:22 pm

I had to reverse the linkage lever on the carb, which put the pin on top. I then made an extension rod for the stock linkage.
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Re: Holley 5200 carb

Post #24 by old28racer » Wed Aug 14, 2019 10:45 pm

Do the two bolts that hold the adapter you made to the intake manifold seal the adapter to the intake without any other bolts? Do you use some ATV for a sure seal with no vacuum leaks?

Did you have to weld material into the 1bbl hole area as you opened it up to a 2bbl slot? Or was this a grind & open procedure?

Did you make the choke cable bracket? The throttle setup looks easy even though my stock linkage has been changed because I am running a Holley 2300 350 cfm carb currently.
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Re: Holley 5200 carb

Post #25 by Blairsville Ed » Thu Aug 15, 2019 7:19 pm

There’s a 3/8 stud on the opposite side with a backing plate on the bottom. I used standard 1/32 gasket material to seal. No additional sealer was needed.
The cutout in the manifold was milled. No welding was needed. The 2 bolt holes are already there, you’ll need to install the threaded inserts. Internal thread is 3/8-16.
The choke mechanism was home made. It’s a copy of a Dorman manual choke kit 55101.

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Re: Holley 5200 carb

Post #26 by old28racer » Fri Aug 16, 2019 12:43 am

Thanks for the additional information. Do you have any pictures of the intake while you were opening it up that you could post on this tread?
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Re: Holley 5200 carb

Post #27 by Blairsville Ed » Fri Aug 16, 2019 8:28 am

I should have taken some pics but I did not.
There were some pics on the Ford truck blog showing a guy milling the head. That’s where I got the idea from.

I have 2 mounting blocks available if anyone is interested. The one on the left is for a Carter YF, the one in the middle is for the Holley 5200. I currently using the thin one on the right.
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Re: Holley 5200 carb

Post #28 by old28racer » Sat Aug 17, 2019 2:38 pm

Blareville Ed --- Sent you a PM about the 5200 adapter.
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Re: Holley 5200 carb

Post #29 by old28racer » Sun Aug 18, 2019 7:38 pm

Blairsville Ed --- Sent another PM to you on the adapter.
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