4DrSwingr
Member
Hey guys I need some help, I just replaced my intake and carb to a 4bbl in my 74 Dart, now I’m stumped on how to make the throttle linkage work. Any help will be much appreciated.
318 4bbl upgrade. Help
- Thread starter 4DrSwingr
- Start date
-
Read up. Lots of good information already posted here on the site. 2-Barrel to 4-Barrel Conversion
4DrSwingr
Member
Cheers, I’m very new, literally yesterday. Thanks.
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
- Joined
- Jan 19, 2014
- Messages
- 25,642
- Reaction score
- 12,927
As to factory parts
at the bare minimum, you will need ;
a different throttle cable and
a factory 4-bbl cable bracket
and a longer KD rod.
Plus, I can't tell what the bracket on the carb looks like, so whatever you need there.
at the bare minimum, you will need ;
a different throttle cable and
a factory 4-bbl cable bracket
and a longer KD rod.
Plus, I can't tell what the bracket on the carb looks like, so whatever you need there.
You can use your 2bbl linkage if you want to, i've done it more than I care to remember.
Here is a couple of videos from one of those youtuber Clutz's .....
The 2nd video is just as important as getting it hooked up!
and another.....
4DrSwingr
Member
You can use your 2bbl linkage if you want to, i've done it more than I care to remember.
Here is a couple of videos from one of those youtuber Clutz's .....
The 2nd video is just as important as getting it hooked up!
and another.....
Seriously thank you!!! Those two videos were exactly what I needed, I knew there had to be a way to use the old bbl linkage. Fabo is really an amazing group of people.
There are lots of old eyes here. The linkage in your picture might as well be a mile away.
This is a 318 2 to 4 bbl conversion. The throttle cable is aftermarket Spectre.
I believe the stock one would work but I didn't have one. I reused the 2bbl manifold bracket.
The kickdown is extended with a fine thread found at the local hardware store.
Relocated the kickdown return spring. Use the proper Edelbrock throttle adapter for Mopar.Works for me !
I believe the stock one would work but I didn't have one. I reused the 2bbl manifold bracket.
The kickdown is extended with a fine thread found at the local hardware store.
Relocated the kickdown return spring. Use the proper Edelbrock throttle adapter for Mopar.Works for me !
TrailBeast
AKA Mopars4us on Youtube
The cable throttle pressure setup simplifies the heck out of that part.
Then you can make your money back by selling the rods setup.
DartGTDan
'71 Dart GT Fan
My engine builder used Lokar throttle & "kickdown" cables on my Edelbrock 1406 on a LD4B.
4DrSwingr
Member
Man I wish I had the time and money! I have a parking spot and a love of classic cars. I actually fabricated a linkage bracket at work today out of aluminum. It is actually working, quite well so far. If I’m lucky I might be able to fire the engine tonight. Fingers crossed.
4DrSwingr
Member
Crafted with the best of intentions. Lol
The small spring needs to keep the kickdown lever against the pin.
4DrSwingr
Member
This is just a temporary mock up, still many adjustments to be made.
4DrSwingr
Member
So much to my dismay something is wrong. As soon as I start my engine it over revs like the throttle is wide open. This cars is going to be the death of me.
junkyardhero
Well-Known Member
throttle cable too short?
bracket in the wrong place?
bracket in the wrong place?
- Hook the springs up first, so the throttle plates are closed. Make sure they are closed.
- Hook up the throttle cable. This will verify it is long enough to reach the throttle lever without opening it up.
- Hook up kickdown linkage. Verify when throttle is wide open (engine off) that the kickdown is 98% all the way back.
- Also, you can verify the fast idle for the choke isn't for some odd reason turned way up.
4DrSwingr
Member
So I’m waiting on en electric choke so there isn’t one. No cable nothing. Would that make it act like the throttle is wide open?
When a car is in park, the throttle does not have to be open but a crack to rev to the moon. Again, verify they are closed (visual).
4DrSwingr
Member
There closed. I also put in a square to spread bore adapter just now. Maybe that’ll help.
4DrSwingr
Member
Turns out when I put the distributor back on I advanced it, set it back and now it’s running.
4DrSwingr
Member
I just want to say thank you to everyone who took the time to try and help me out, you guys are the best!!
OldmanRick
Well-Known Member
Cudos on the SP-2P. Got one on the shelf i'll probably never use...lol. Let us know how much better she runs when you get it sorted out.
-
