replicaracer43
Grumpy Old Man
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Excellent work as allways! My vote is for the black air cleaner!
2-Barrel to 4-Barrel Conversion
- Thread starter 6pk2goDemon
- Start date
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ir3333
Well-Known Member
you can take a 318 throttle bracket
cut almost all the way through the fold on the carb side (hack saw)
bend it vertical and run a bead on the carb side
it'll be close enough
cut almost all the way through the fold on the carb side (hack saw)
bend it vertical and run a bead on the carb side
it'll be close enough
needsaresto
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What about a 360 4 bbl bracket? That should work..
Johnny Dart
Well-Known Member
And some of those readily available 340 parts won't work.
Hmm...
Ok Rob....Enlighten me.
Couch cough ... Sarcasm ..... Cough cough
I got a few parts in from Mancini for the above swap. Here's the list.
HFAX42 68-70 return spring bracket
HF0060 Small block 4 barrel throttle cable bracket
HF407 340-6 coil mounting bracket
1843 Edelbrock throttle lever adapter
for you automatic transmission fans, here's a handy adapter to extend the kick down linkage as needed.
Edelbrock 8004. (Last photo)
The return spring bracket sets a bit crooked but will work fine with a little tweak.
The throttle cable bracket looks like it will work perfect.
The throttle lever adapter fit good and should work fine
The Coil mounting bracket will need some grinding to fit simply because the intake runners on the LD4B are wider than the factory 340-6 runners.. If you spread the ears out to fit over the runners the bolt holes won't line up.
Mancini HFAX42 throttle spring bracket
Mancini HF0060 throttle cable/ kickdown lever bracket
Mancini 340-6 coil bracket
Edelbrock 8004 Kickdown lever extension.
Edelbrock 1843 Mopar throttle adapter fo most Edelbrock/Carter carbs. There are quite a few different ones. check to make sure there is one for your carb.
View attachment 20160206_144541.jpg
View attachment 20160206_144806.jpg
View attachment 20160206_144712.jpg
View attachment 20160206_144607.jpg
HFAX42 68-70 return spring bracket
HF0060 Small block 4 barrel throttle cable bracket
HF407 340-6 coil mounting bracket
1843 Edelbrock throttle lever adapter
for you automatic transmission fans, here's a handy adapter to extend the kick down linkage as needed.
Edelbrock 8004. (Last photo)
The return spring bracket sets a bit crooked but will work fine with a little tweak.
The throttle cable bracket looks like it will work perfect.
The throttle lever adapter fit good and should work fine
The Coil mounting bracket will need some grinding to fit simply because the intake runners on the LD4B are wider than the factory 340-6 runners.. If you spread the ears out to fit over the runners the bolt holes won't line up.
Mancini HFAX42 throttle spring bracket
Mancini HF0060 throttle cable/ kickdown lever bracket
Mancini 340-6 coil bracket
Edelbrock 8004 Kickdown lever extension.
Edelbrock 1843 Mopar throttle adapter fo most Edelbrock/Carter carbs. There are quite a few different ones. check to make sure there is one for your carb.
View attachment 20160206_144541.jpg
View attachment 20160206_144806.jpg
View attachment 20160206_144712.jpg
View attachment 20160206_144607.jpg
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^ ^ ^ Looks like you're about ready for the 4v swap. The extra oooomph is nice & makes a huge difference
You might need a longer throttle cable too.....
You might need a longer throttle cable too.....
Car was running great....What a noticeable difference going from a 2 to 4 barrel!!
Then a problem surfaced :banghead: :scratch:
Amazing what a couple pieces of crud found wedged between the needle & seat will cause
View attachment P1020813.jpg
Then a problem surfaced :banghead: :scratch:
Amazing what a couple pieces of crud found wedged between the needle & seat will cause
View attachment P1020813.jpg
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needsaresto
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Amazing what somehow sneeks in...
Car was running great....What a noticeable difference going from a 2 to 4 barrel!!
Then a problem surfaced :banghead: :scratch:
Amazing what a couple pieces of crud found wedged between the needle & seat will cause
How did you get a dime stuck in the needle and seat??? :banghead:
Awww crap...You didn't lose a page & I guess it's time to fess up with a HUGE mistake I made, but never mentioned!
It ultimately did turn out for the better in the long run IMO. Stay tuned....
Soooo, after getting everything freshly painted, assembled, torqued, etc. I took it for a drive...WooHoo it ran great!! Such an improvement. I was stoked to say the least!
When I returned home & checked it over, the rear of the intake was puking oil...ugh
I used a copper type gasket sealer that you can see in Post #35 on the intake. It NEVER hardened...Damn what a stupid dumbass move...Did I mention STOOOPID ??
When I returned home & checked it over, the rear of the intake was puking oil...ugh
I used a copper type gasket sealer that you can see in Post #35 on the intake. It NEVER hardened...Damn what a stupid dumbass move...Did I mention STOOOPID ??
Here's a link to a thread on how to set up a Holley 4 bbl carb to mount on a Mopar that goes well with this thread:
How to set up a Holley 4 bbl for a Mopar
How to set up a Holley 4 bbl for a Mopar
Thank you @krazykuda and @6pak2goDemon for starting this thread for all to use and enjoy
Thought this would be a good post to bring back for some of our newer members
Thought this would be a good post to bring back for some of our newer members
Good to send this to the front of the line. It reminded me that I needed to edit my last post with part numbers below each photo for clarification.
I'm with ya there. My ol' 2 barrel does a nice job. I have had a LD4B and a AVS2 for quite a few years. Haven't installed it yet.
Hey guys ..
As always, this site is a gold mine of information.
I had some flat stock kicking around so decided to build a bracket for the coil on my LD4B. I'm happy with the result.
As always, this site is a gold mine of information.
I had some flat stock kicking around so decided to build a bracket for the coil on my LD4B. I'm happy with the result.
Nicely done!
340 brackets arrived from Mancini... getting them painted up right now.
Puzzling on the kickdown linkage if there's some insight. Using the stock plate and linkage but not sure on the connection onto the carb. (?)
This is a 1971 318 with LD4B and Holley 4160
Thanks ahead of time for the feedback.
Puzzling on the kickdown linkage if there's some insight. Using the stock plate and linkage but not sure on the connection onto the carb. (?)
This is a 1971 318 with LD4B and Holley 4160
Thanks ahead of time for the feedback.
Nope. Te large hole is a GM thing. THey used a bushing for their throttle rod. Your kickdown is all wrong. It should look something like this. I can't guarantee these photos are correct. The pivot in the back goes on the post on the throttle bracket. THat transfers the horizontal movement to vertical that goes down behind the cylinder head.
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