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Bronco Carb Options

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ledslinger29
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Bronco Carb Options

Post #1 by ledslinger29 » Sat Nov 23, 2019 9:30 pm

Hey Fellas,
I have a question for those of you with Bronco knowledge. I’ve grown tired of my 1100 on my 170. Have any of you put on a Weber 32/36? If so, did you have to modify the head at all, what did you do about the throttle cable, and did you have a problem with hood clearance? My carb has some issues that will cost me more to fix than it’s worth, and I’d like to get a little more go out of my little motor, but I don’t want to spend a pile of money on a dead end road. I’ve already got a DSII distributor from Bill.
68 Bronco Halfcab 170 wallered out .060 over, oversized valves, zero decked, 9:1 SCR, Autolite 1100 w/ Loadomatic/Pertronix, Schneider 248/56H cam

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chad
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Bronco Carb Options

Post #2 by chad » Sun Nov 24, 2019 11:03 am

I've enjoyed watchin ur build'n comments here over the yrs, not sure I have much to offer (beyond what I C here & experience in 37 yrs of bronk ownership). 1st off I would say - there is less need to ask bronk specific Qs. It's the same motor w/the same issues as a falcon, stang or any of the others - low hood (I do have some ideas gathered here 4 that), poor 'breathin', dyn0mite bottom end (ever have ur pan dwn to look @ those huge counter weights on the 170 crank) & so forth. The only reason I am in the process of a '69 250 swap is the cubes. I have not put on the RBS, am just now locating the motor in the frame & fabin the 250 'ring' to the 170 sump.

I choose the RBS as 1 of the 6 or 8 'low hood' wrk-a-rounds (W/advisement frm this site as a 215 cfm carb - possibly 'choke' ur 2.8L). U can look to the many threads here on the webber/holley progressive on any vehicle we address. There should B several on the current Index page (Ryan's most recent?) and those following, the Handbook & tech archive above. I seek tq & choices have tended toward largest i6 & largest 1V. I believe U want streetability and the webber seems a good choice (but tall & not a hi cfm for that optimal app - which is AFTER ALL - The primary Q 2 answ). ? Holley 4V 300 cfm ? I just DK~. Keep talkin, let us know how U do...
:thumbup:
Last edited by chad on Fri Dec 06, 2019 10:47 am, 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), '69 250ci, NV 3550 & DSII, "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

bmbm40
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Re: Bronco Carb Options

Post #3 by bmbm40 » Sun Nov 24, 2019 5:36 pm

I seem to remember that Weber carb needs an adapter so not sure about hood clearance problems. I have become interested in the Carter BBD carb it is a 2 barrel that can direct mount to the log head if you hog out the opening as some members have done and reported very good performance. They have not been made in years but a Chinese version is less than $100. I am considering it for my Bronco.
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 2v, power brakes, rear LS, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

Soldmy66
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Re: Bronco Carb Options

Post #4 by Soldmy66 » Sun Nov 24, 2019 5:54 pm

bmbm40 wrote:I seem to remember that Weber carb needs an adapter so not sure about hood clearance problems. I have become interested in the Carter BBD carb it is a 2 barrel that can direct mount to the log head if you hog out the opening as some members have done and reported very good performance. They have not been made in years but a Chinese version is less than $100. I am considering it for my Bronco.


Like this one?

https://www.amazon.com/Twilight-Garage- ... 3298&psc=1

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chad
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Bronco Carb Options

Post #5 by chad » Mon Nov 25, 2019 5:21 pm

"...BBD..."
thank you Seth...

but seems pretty tall, if going 4 it I'd rather the 2100.
Ck the cfm 4 these as they R 4 bigger motors...
"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), '69 250ci, NV 3550 & DSII, "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

bmbm40
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Re: Bronco Carb Options

Post #6 by bmbm40 » Tue Nov 26, 2019 9:34 am

Yep that is it. Apparently they are available in three cfm ratings. I will find the post from the member that has done this conversion and provide the link. I like it because you avoid expensive machine costs and leave head on vehicle. And down the road you can still direct mount other carbs if your plans change or put original carb on.
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 2v, power brakes, rear LS, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

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ledslinger29
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Re: Bronco Carb Options

Post #7 by ledslinger29 » Mon Dec 02, 2019 4:14 pm

bmbm40 wrote:Yep that is it. Apparently they are available in three cfm ratings. I will find the post from the member that has done this conversion and provide the link. I like it because you avoid expensive machine costs and leave head on vehicle. And down the road you can still direct mount other carbs if your plans change or put original carb on.

That looks like a viable option, as I don’t want to have to modify the head if I can help it, and I can go back to the 1100 if I need to later. I’d like to see the post for sure, bmbm
68 Bronco Halfcab 170 wallered out .060 over, oversized valves, zero decked, 9:1 SCR, Autolite 1100 w/ Loadomatic/Pertronix, Schneider 248/56H cam

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Re: Bronco Carb Options

Post #8 by bmbm40 » Mon Dec 02, 2019 4:59 pm

Hi
Can’t copy link and post here on iPad for some reason but will be home tomorrow or check post from
Econoline on Saturday April 6 2019. Thanks
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 2v, power brakes, rear LS, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

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Re: Bronco Carb Options

Post #9 by ledslinger29 » Mon Dec 02, 2019 9:27 pm

bmbm40 wrote:Hi
Can’t copy link and post here on iPad for some reason but will be home tomorrow or check post from
Econoline on Saturday April 6 2019. Thanks

I found it. After reading that whole thread I’m not sure what to think!
68 Bronco Halfcab 170 wallered out .060 over, oversized valves, zero decked, 9:1 SCR, Autolite 1100 w/ Loadomatic/Pertronix, Schneider 248/56H cam

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Re: Bronco Carb Options

Post #10 by chad » Tue Dec 03, 2019 8:59 am

chad wrote:"...BBD..."
thank you Seth...

but seems pretty tall, if going 4 it I'd rather the 2100.
Ck the cfm 4 these as they R 4 bigger motors...

Isint he the one who brought it up? U lookin into the BBD? "Mr. Econoline"
here or Seth is very accommodating to inquiries - he sold me the 'early Mav mounts'
I'm usin to get the 250 in my bronk.
"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), '69 250ci, NV 3550 & DSII, "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: Bronco Carb Options

Post #11 by Econoline » Tue Dec 03, 2019 12:11 pm

It was 63falcon4drwagon who did this mod and first brought up using a BBD. At the time I was looking at this carb b/c of its size. I'm still planning to use the 2CG version of the Holley Sniper version of the BBD. I would guess you'd want the 6 cylinder jeep version of this carb for you're 170 if you can make the linkage work. If you have a small log on you're 170 I'm not sure there is enough pad to do his mod.

https://fordsix.com/viewtopic.php?f=1&t=79809&p=617769#p617769

https://fordsix.com/viewtopic.php?f=1&t=79820&p=620837&hilit=BBD#p620837

He also mounted a Monojet:

https://fordsix.com/viewtopic.php?f=1&t=79837&p=618049#p618049

Also, there have been several guys on my van forum that have installed those "universal" 1 barrels on their 170's and been pleased with the results. They have an adjustable main jet. And you can install a weber with the Vintage Inlines adapter if you have enough hood clearance.
Good luck. And then there is the LOM distributor issue.
It ain't gonna fix itself

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Re: Bronco Carb Options

Post #12 by bmbm40 » Wed Dec 04, 2019 7:55 pm

Yep and this one

viewtopic.php?f=1&t=79820

Good tip about the 170 head having enough pad to hog out.
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 2v, power brakes, rear LS, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

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Bronco Carb Options

Post #13 by chad » Wed Dec 04, 2019 9:24 pm

I like that we R getting threads for specific carbs.
WIsh there were ways to sticky them. But...
I feel the same abt "specific heads" ('early', 'hex', 170, 200, late, etc). Rear ends ina 60s, 70s ford'n more, Seems like
it would B a bear to slice'n dice into 'a table of contents' type listing. My bet is
it would enhance our usability as a site. How bout this?: I;m willing to do so for
"All posts on 2V carb mounts on all i6 sm block falcon oem heads."

U guys got me goin ta nite !
Did I subscribe to deeply inta rbohm's signature line ?
"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), '69 250ci, NV 3550 & DSII, "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: Bronco Carb Options

Post #14 by DoctorC » Thu Dec 05, 2019 1:18 pm

I put a 32/36 on my Mustang 200 recently. Let me find the posts on the issues I had and post them here for you.
I went with a kit from VI, spacer included. I'm super happy with it all.

Incorrect vacuum hookup to Carb
viewtopic.php?f=1&t=80154

Mechanical throttle linkage woes
viewtopic.php?f=1&t=80387&p=623809#p623809

Fuel pump comment
viewtopic.php?f=1&t=80321&p=623281#p623281

Vac line setup post Weber
viewtopic.php?f=1&t=80368&p=623618#p623618

DS2 Dizzy thread:
viewtopic.php?f=1&t=80088

MSD Wiring problem
viewtopic.php?f=1&t=80187
1967 Cherry Red Mustang
Weber 32/36,
MSD 6AL+MSD Coil,
Duraspark 2 dizzy

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chad
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Bronco Carb Options

Post #15 by chad » Thu Dec 05, 2019 2:13 pm

(sorry, didn't mean here, in this guy's thread, if that's what U R doin Doc....)
"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), '69 250ci, NV 3550 & DSII, "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: Bronco Carb Options

Post #16 by DoctorC » Thu Dec 05, 2019 10:43 pm

Naw, just tryin to be helpful to the bloke. Links make life easier. =)
1967 Cherry Red Mustang
Weber 32/36,
MSD 6AL+MSD Coil,
Duraspark 2 dizzy

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Re: Bronco Carb Options

Post #17 by ledslinger29 » Sun Dec 15, 2019 10:20 am

Thanks for all of the input everyone. I’ve got some reading to do
68 Bronco Halfcab 170 wallered out .060 over, oversized valves, zero decked, 9:1 SCR, Autolite 1100 w/ Loadomatic/Pertronix, Schneider 248/56H cam

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Re: Bronco Carb Options

Post #18 by bmbm40 » Sun Dec 15, 2019 5:19 pm

Re: Carter BBD
Report this post
Quote
Post #19 by 63falcon4drwagon » Thu Apr 11, 2019 1:20 pm
Want a 250 cfm carb that will bolt on a large log head?
1968 and 1969 Camaro six-cylinder engines (the standard 230ci/140hp and the optional 250ci/155hp), received the Rochester "Monojet" (1MV) one-barrel carburetors rated at 250 CFM.
1-11/16" throttle bore with 1-1/2" venturi = 250 cfm
$96.99 on Amazon.
It has the same 75mm stud spacing as the Carter YFA which is a bolt on to a 1978 large log Ford carb adapter.

And this giant one barrel is pretty interesting. I was talking to a friend the other day and he was telling me about his high school era 250ci Camaro with this carb presumably and he mentioned the performance and drivability were very good.
66 Bronco-1970 250, NV3550, DSII, 4 turn ps, uncut, 1" bl, 2.5" sl, front disc, twin stick D 20, 30 x 9.50
NEXT- direct mount 2v, power brakes, rear LS, 3G, electric fan, electric upgrades, custom curved DSII, header, 31" tires

New guy? Get the Falcon Performance Handbook and Ford six high performance parts from https://vintageinlines.com

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chad
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Bronco Carb Options

Post #19 by chad » Sun Dec 15, 2019 8:13 pm

not sure bout the Monojet but BBD is on 80s fox (3.8L not 4.1L or 3.3L) a bent6 w/all that 'extra' stuff' from the era.
"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), '69 250ci, NV 3550 & DSII, "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: Bronco Carb Options

Post #20 by ledslinger29 » Fri Jan 03, 2020 6:27 pm

I think I’m just gonna stick with a UREMCO rebuilt 1100 from Summit, I’ve looked into all of these options, and I don’t have the time to work through any major mods, and I just rebuilt the motor last year. I suppose I should have paid a little more attention to carb options and had the bore hogged out while I had the head off, and I don’t have the will to pull it right now. The one on Summitt is only 177 bucks, and should be a direct replacement for what I have. The two barrel upgrade is just gonna have to wait til later I reckon.
68 Bronco Halfcab 170 wallered out .060 over, oversized valves, zero decked, 9:1 SCR, Autolite 1100 w/ Loadomatic/Pertronix, Schneider 248/56H cam

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Bronco Carb Options

Post #21 by chad » Fri Jan 03, 2020 7:15 pm

or
just geta head (the optimal 1) make a more informed plan, work the plan - 4 later bolt on...
:nod:
"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), '69 250ci, NV 3550 & DSII, "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: Bronco Carb Options

Post #22 by Econoline » Fri Jan 03, 2020 9:26 pm

That's a good move if you have a 1/4" drive distributor imo. It's better and easier to just go to a 200 if you want a non LoM setup. Is the 1100 replacement carb a 200 carb or a 170 carb? You could try a 240 LoM 1100 carb as well. If you need to make or modify an adapter it will be relatively easy, or you can just buy it from Vintage Inlines. My 170 would run out of breath with it's 1100 at about 65-68 mph with a 3.5:1 rear axle. Somewhere around 3800-4200 rpm depending on conditions. You could put your foot in it and hear it when you reached it's limits, it just couldn't move anymore air. It wanted to, but that carb and small log have their limits.

One of these days Holley is going to release a 1 barrel sniper. I think they'd sell. Esp if you could run how ever many in series.
It ain't gonna fix itself

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Re: Bronco Carb Options

Post #23 by ledslinger29 » Sat Jan 04, 2020 2:23 pm

Econoline wrote:That's a good move if you have a 1/4" drive distributor imo. It's better and easier to just go to a 200 if you want a non LoM setup. Is the 1100 replacement carb a 200 carb or a 170 carb? You could try a 240 LoM 1100 carb as well. If you need to make or modify an adapter it will be relatively easy, or you can just buy it from Vintage Inlines. My 170 would run out of breath with it's 1100 at about 65-68 mph with a 3.5:1 rear axle. Somewhere around 3800-4200 rpm depending on conditions. You could put your foot in it and hear it when you reached it's limits, it just couldn't move anymore air. It wanted to, but that carb and small log have their limits.

One of these days Holley is going to release a 1 barrel sniper. I think they'd sell. Esp if you could run how ever many in series.

I’m not sure which one it is, but there are multiple available. You think I’d do better with a 240 or 200? I imagine they are higher CFM and jetted differently, which might help with power a bit.
Chad, after all the time and money I spent on this build, putting a new head on isn’t an option right now. Plus, I’m pretty happy with the motor, just replacing the carb because I have an air leak around the throttle plate shaft and I can’t get the carb tuned the way I want with an air leak, and getting it fixed is more than 177 bucks. Also, when I park for a a few minutes the throttle sticks, something to do with the accelerator pump vent shaft that is very frustrating. 177 dollar bolt on replacement is worth a shot. But perhaps a new head is in the distant future.
68 Bronco Halfcab 170 wallered out .060 over, oversized valves, zero decked, 9:1 SCR, Autolite 1100 w/ Loadomatic/Pertronix, Schneider 248/56H cam

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Bronco Carb Options

Post #24 by chad » Sat Jan 04, 2020 5:38 pm

"...new head on isn’t an option right now..."
yes, sorry, not a clear writer. I meant
"...in the (distant) future."
There have been re-bush kits to stop that leak in fleebay.

How bout a new acc. pump same time?
"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), '69 250ci, NV 3550 & DSII, "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: Bronco Carb Options

Post #25 by wsa111 » Sat Jan 04, 2020 6:38 pm

chad wrote:"...new head on isn’t an option right now..."
yes, sorry, not a clear writer. I meant
"...in the (distant) future."
There have been re-bush kits to stop that leak in fleebay.

How bout a new acc. pump same time?

Check out this link. It pertains for the autolite 2100, but its an option.
https://www.jalopyjournal.com/forum/thr ... r.1168283/
67 mustang,C-4, with mod. 80 hd, custom 500 cfm carb with annular boosters, hooker headers, dual exh.-X pipe, flowmaster mufflers, DSII dist. MSD-6425CL & MSD-Blaster 8252 Coil. Engine 205" .030" over with offset ground crank & 1.65 roller rockers. 9.5 comp., Isky 262 cam.
2003 Ford Lightning daily driver. Recurving Distributors. billythedistributorman@live.com
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Bronco Carb Options

Post #26 by chad » Sat Jan 04, 2020 8:41 pm

Thnx Bill,
FF, our bud from the 300/4.9 crowd is right on top of it (inc a vendor) but would leave off the 'stone the plates' step.
"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), '69 250ci, NV 3550 & DSII, "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: Bronco Carb Options

Post #27 by Econoline » Sat Jan 04, 2020 8:57 pm

ledslinger29 wrote:I’m not sure which one it is, but there are multiple available. You think I’d do better with a 240 or 200? I imagine they are higher CFM and jetted differently, which might help with power a bit.


Yeah, the venturi's get larger as they go up the engine line. The jet's are available from mikes carb and maybe elsewhere if the larger 1100 is jetted to rich for the 170. It sounds like you are just frustrated with 'this' carb you have and just want to stop fiddling with the damned thing. I get the sentiment. It goes along with using carbs this old and modern fuel doesn't help either.
It ain't gonna fix itself

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Re: Bronco Carb Options

Post #28 by ledslinger29 » Sun Jan 05, 2020 11:28 am

Econoline wrote:
ledslinger29 wrote:I’m not sure which one it is, but there are multiple available. You think I’d do better with a 240 or 200? I imagine they are higher CFM and jetted differently, which might help with power a bit.


Yeah, the venturi's get larger as they go up the engine line. The jet's are available from mikes carb and maybe elsewhere if the larger 1100 is jetted to rich for the 170. It sounds like you are just frustrated with 'this' carb you have and just want to stop fiddling with the damned thing. I get the sentiment. It goes along with using carbs this old and modern fuel doesn't help either.


That about sums it up!
68 Bronco Halfcab 170 wallered out .060 over, oversized valves, zero decked, 9:1 SCR, Autolite 1100 w/ Loadomatic/Pertronix, Schneider 248/56H cam

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170 Carb Options

Post #29 by chad » Sun Jan 05, 2020 3:13 pm

oneada rules of thumb we use here is - the bigger the 1v, the more tq (I don't seek HP).

Some (inc Econo above) have got into the ford BBD (a 3.8L or 233ci made) carb. Chevy made a big'un for their 250, the Monojet (Camaro i6 carb.). I think the Carter may B too hi (from a Ford 300/4.9 - YF, YAF) for our hood but am not sure...

I'd wrk what I have rather than abandon it, but that's just 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), '69 250ci, NV 3550 & DSII, "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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