Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech)
Sign in using an external account
Register Forgot Password?
Search


Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Weiand 8124 and 4100 carb

Reply
 
 
 
 
Thread Tools Search this Thread
Old 10-19-2009, 12:28 PM   #1
chewy1234
2nd Gear Member
 
Join Date: Jan 2008
Vehicle: 1965 Ford Mustang
Location: Utah
Posts: 152
Smile Weiand 8124 and 4100 carb

Does anyone have any experience with a Weiand 8124 and 4100 carb with 1.08. I am converting my 65 289 to 4V. I have a cast iron intake, but am leaning on the side of not using it.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
chewy1234 is offline   Reply With Quote
Old 10-19-2009, 12:36 PM   #2
jcthorne
1st Gear Member
 
Join Date: Apr 2008
Vehicle: 1965 Mustang GT
Location: Texas
Posts: 111
Default

You are headed in the right direction. The 4100 carb with 1.08 bores is an excellent carb that will get 98% of the possible performance out of a 289 and do it with better drivability than any of the aftermarket products.
jcthorne is offline   Reply With Quote
Old 10-19-2009, 01:50 PM   #3
67mustang302
6th Gear Member
 
Join Date: Apr 2007
Vehicle: 67 Mustang Coupe
Location: California
Posts: 10,419
Default

It'd be a good setup for a mild 289. If you're building bigger power than you might want a different carb with more tuning flexibility.
__________________
Who cares how much horsepower it has, all that matters is how fast it goes!

Untested 331, lots of suspension, chewing up corners.
67mustang302 is offline   Reply With Quote
Old 10-19-2009, 03:11 PM   #4
chewy1234
2nd Gear Member
 
Join Date: Jan 2008
Vehicle: 1965 Ford Mustang
Location: Utah
Posts: 152
Default

I will eventually do a rebuild but for the time being I want something reliable. Is the cast iron intake better than the weiand?
chewy1234 is offline   Reply With Quote
Old 10-19-2009, 04:09 PM   #5
longlive289s
3rd Gear Member
 
Join Date: Oct 2006
Vehicle: 1994, Ford, Cobra
Location: Kirkland, WA
Posts: 934
Default

i just did the 4v swap. went with weiand action + manifold (which i think is the Weiand 8124) and a holly street avenger 570cfm carb (289 .010 over). freakin love it. very easy to tune and i was able to re-jet it in 10 mins.

im assuming the cast iron is the stock intake, correct? id get something lighter. i pulled my 2v intake and weighed it. somethin like 41lbs. the new aluminum one is 12lb. lol

not a hard swap at all and trust me u dont need to pull the distributor out like manual says

before
Click the image to open in full size.

after
Click the image to open in full size.
__________________


-1994 Cobra: H/C/I, up's, smog del, fluidine cooling, carbon fiber clutch, short throw shifter, 3.55's, racing pan, 04 cobra interior, UPR front end, tubular k and a arms, coilovers, strut tower brace, full length subframe connectors, MAC control arms in the back, fr500's, drag radials, chipped and tuned by Horsepower Ranch. 327rwhp
-1966 Mustang: stripped.....ill get to it when i get some $$$
-2001 chevy pos

Last edited by longlive289s; 10-19-2009 at 11:37 PM.
longlive289s is offline   Reply With Quote
Old 10-19-2009, 09:53 PM   #6
Starfury
6th Gear Member
 
Join Date: Aug 2007
Vehicle: 1967 Ford Mustang Fastback
Location: Davis, CA
Posts: 5,654
Default

You don't have to pull the distributor, but it makes life a lot easier. Getting a 41lb 2V intake out from behind a distributor would be a PITA.

Go for the 8124. It's worth it in weight savings alone, but it also benefits from a more modern runner design for better throttle response and higher rpm flow.
__________________
Tad H.
'67 Fastback
331 stroker
Starfury is offline   Reply With Quote
Old 10-19-2009, 11:22 PM   #7
longlive289s
3rd Gear Member
 
Join Date: Oct 2006
Vehicle: 1994, Ford, Cobra
Location: Kirkland, WA
Posts: 934
Default

getting the intake out with the distributor wasnt that hard. break the seal the basically move the intake back then lift it up. seemed a lot easier than pulling the dizzy. simple

Click the image to open in full size.

edit....go juventas lol
__________________


-1994 Cobra: H/C/I, up's, smog del, fluidine cooling, carbon fiber clutch, short throw shifter, 3.55's, racing pan, 04 cobra interior, UPR front end, tubular k and a arms, coilovers, strut tower brace, full length subframe connectors, MAC control arms in the back, fr500's, drag radials, chipped and tuned by Horsepower Ranch. 327rwhp
-1966 Mustang: stripped.....ill get to it when i get some $$$
-2001 chevy pos

Last edited by longlive289s; 10-19-2009 at 11:31 PM.
longlive289s is offline   Reply With Quote
Old 10-20-2009, 12:11 AM   #8
matt_lamb_160
1st Gear Member
 
matt_lamb_160's Avatar
 
Join Date: Mar 2009
Vehicle: 1967, Ford, Fairlane
Location: Victoria, Australia
Posts: 54
Default

longlive289s, what carb was on your Mustang before you did the swap?

What was the difference in installed height between the two setups (to the top of the carb)?
matt_lamb_160 is offline   Reply With Quote
Old 10-20-2009, 01:29 AM   #9
Starfury
6th Gear Member
 
Join Date: Aug 2007
Vehicle: 1967 Ford Mustang Fastback
Location: Davis, CA
Posts: 5,654
Default

Quote:
Originally Posted by longlive289s View Post
getting the intake out with the distributor wasnt that hard. break the seal the basically move the intake back then lift it up. seemed a lot easier than pulling the dizzy. simple
Pulling the distributor takes 30 seconds. Timing it doesn't take much longer.
__________________
Tad H.
'67 Fastback
331 stroker
Starfury is offline   Reply With Quote
Old 10-20-2009, 04:19 AM   #10
longlive289s
3rd Gear Member
 
Join Date: Oct 2006
Vehicle: 1994, Ford, Cobra
Location: Kirkland, WA
Posts: 934
Default

ya the weiand 8124 is good. i was bouncing back and forth between the edelbrock air gap but was told multiple times the action + was just as good if not better than the air gap.

old carb was the stock autolite 2100. ive heard the motorcraft 4100 is pretty freakin good but funny thing is....its about $50 more than the holley. depending on where you wanna go with your build.....the street avenger is good but you can get bigger numbers from a double pumper or a demon carb, but expect to start shelling out benjemins. depending on your car your probably gonna have to re-jet the carb tho. with the street avenger it was -2 on the primaries and +2 on the 2nd's i think

height issues was somethin i was worried about and did about a million measurements before the actual swap. i had an k&n filter on the car that was actually for a truck (ie: bout a inch taller) and that still fit. i got a stock filter from a shop near me that specializes in older mustangs and the weiand and holley togeather is just about the same height as stock intake and carb so everything fits with room to spare

word of warning......you will have to completely redo you accelerator linkage. and that was my biggest PITA
__________________


-1994 Cobra: H/C/I, up's, smog del, fluidine cooling, carbon fiber clutch, short throw shifter, 3.55's, racing pan, 04 cobra interior, UPR front end, tubular k and a arms, coilovers, strut tower brace, full length subframe connectors, MAC control arms in the back, fr500's, drag radials, chipped and tuned by Horsepower Ranch. 327rwhp
-1966 Mustang: stripped.....ill get to it when i get some $$$
-2001 chevy pos

Last edited by longlive289s; 10-20-2009 at 05:05 AM.
longlive289s is offline   Reply With Quote
Old 10-20-2009, 05:06 AM   #11
kalli
6th Gear Member
 
Join Date: Oct 2006
Vehicle: 1964, Ford, Mustang
Location: Cork, Ireland
Posts: 6,414
Default

the airgap and rpm manifolds are for higher rpm range. not the best idea for a stocker.
I was well pleased with the weiand 8124 (which is the action+) and a 570 holley.
I had an autolite 2100 before that which is an awesome carb (i liked it) and the 4100 will do even better. It's a good choice for a stocker. even better when you use headers
__________________
1964 1/2
302ci, Edelbrock RPM heads, xe268h, 650 speed demon, Hooker Long Tube headers and Flowmaster 40s
Quick Performance Racing 9" rear, Moser axles, 3.5:1 trac-loc from FRPP and T5 transmission.
CSRP disc brakes front and FRPP discs back.
http://www.gascc.ie

kalli is offline   Reply With Quote
Old 11-17-2009, 05:05 PM   #12
matt_lamb_160
1st Gear Member
 
matt_lamb_160's Avatar
 
Join Date: Mar 2009
Vehicle: 1967, Ford, Fairlane
Location: Victoria, Australia
Posts: 54
Default

Are any linkage mods required when chnaging from a 2V setup to a 4100 and Weiand 8124? Will the automatic choke heat tube still bolt up ok?
matt_lamb_160 is offline   Reply With Quote
Old 11-18-2009, 06:21 AM   #13
kalli
6th Gear Member
 
Join Date: Oct 2006
Vehicle: 1964, Ford, Mustang
Location: Cork, Ireland
Posts: 6,414
Default

if the 2V is autolite 2100 and the 4V is autolite 4100 i don't see any problem with the linkage. the linkage is held in with a clip on both carbs (similar to a door lock rod).

The automatic choke heat tube (heat riser) can be plugged to the autlite 4100 as well (i had one of those). The other end of heat riser is connected to exhaust manifold (which I believe you are not changing).
Even if you change to headers, there's a replacement part that you can get that you just clamp to the header

To sum it up stock intake with autolite 2100 to Weiand 8124 with autolite 4100 should be straight forward.

The only thing I can thhink off is that maybe the water temperature sensor threads are different in each intake. so check on that.

Kalli
__________________
1964 1/2
302ci, Edelbrock RPM heads, xe268h, 650 speed demon, Hooker Long Tube headers and Flowmaster 40s
Quick Performance Racing 9" rear, Moser axles, 3.5:1 trac-loc from FRPP and T5 transmission.
CSRP disc brakes front and FRPP discs back.
http://www.gascc.ie

kalli is offline   Reply With Quote
Old 11-18-2009, 08:16 PM   #14
matt_lamb_160
1st Gear Member
 
matt_lamb_160's Avatar
 
Join Date: Mar 2009
Vehicle: 1967, Ford, Fairlane
Location: Victoria, Australia
Posts: 54
Default

Thanks mate.
matt_lamb_160 is offline   Reply With Quote
Old 04-03-2014, 01:08 AM   #15
engineman
 
engineman's Avatar
 
Join Date: Mar 2014
Vehicle: 1967 mustang 2 2
Location: AL.
Posts: 13
Default

I have the 8124 street warrior on my 1976 F-100 with a Holley vacuum secondary's 600 CFM carb on a 76 302. That woke up the stock motor some what. I need a new fuel pump. The one that's on there is not working and the fuel tank only gravity feeds the carb. so go figure. I still have single exhaust, I bought a HEI for a 302 distributer. They calmed 25 + HP gain. Your 289 I think has 9.0:1 compression ratio. Do you have dual exhaust? or headers yet? Hope some way this helps.
engineman is offline   Reply With Quote
Old 04-03-2014, 01:58 AM   #16
engineman
 
engineman's Avatar
 
Join Date: Mar 2014
Vehicle: 1967 mustang 2 2
Location: AL.
Posts: 13
Smile Weiand intake, a four barrel carb, 289ci. engine

Quote:
Originally Posted by matt_lamb_160 View Post
Are any linkage mods required when chnaging from a 2V setup to a 4100 and Weiand 8124? Will the automatic choke heat tube still bolt up ok?
I had to order Holley's conversion kit, going from a two barrel to a four barrel, for the automatic trans. The throttle linkage had a extension for the trans kick down. The stock throttle linkage works good, you will have to turn the threaded rod out a few turns to snap the stock linkage back on the 4 barrel.

Have someone hold the carb to the floor, while you look for full throttle opening down in the carb. Do this before you prime the carb.
289 short stroke 2.87" if I can remember, high revving engine great for the street. Add a street cam, lifters and correct valve spring's, for a healthy small block with great low and mid range torque from the Weiand and autolite package.
engineman is offline   Reply With Quote
Old 04-03-2014, 02:04 AM   #17
engineman
 
engineman's Avatar
 
Join Date: Mar 2014
Vehicle: 1967 mustang 2 2
Location: AL.
Posts: 13
Default

Wait, wait, wait, this is a old, old, thread up's.... forgot to L@@K.
engineman is offline   Reply With Quote
Old 04-03-2014, 02:04 AM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
289, 4100, 4100carb, 66, 8124, accelerator, action, autolite, carb, intake, linkage, manifold, sale, vmp4100, weiand

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Woooo! Intake Manifold Swap finally done. remicks Classic Mustangs (Tech) 20 08-27-2009 04:15 PM
whats a good carb/ intake combo topher_csr Classic Mustangs (Tech) 9 05-05-2008 08:19 PM

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 06:43 AM.

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup