65 Fury 318 Poly 4 bbl swap

[Jay Gibbs]

Hey guys,

Thanks for the welcome! I've got a 65 Fury III with the 318 poly that my grandfather bought new in 1965, he died in 1971. Car mostly sat til my grandmother died in 1988. I've had it since then...has a little over 40,000 miles! I've just done a COMPLETE suspension/brake/fuel system rebuild and added front and rear sway bars that transform the handling. Now I find I'm looking for a little more power to match the newfound sporty suspension. I'm trying to put a 4bbl intake and carb on it. The problem seems to be that the linkage is different for my current 2bbl stromberg. As it is now, the 2bbl linkage "pulls" from the top to increase rpm but the 4bbl carb seems to need a "push" from the bottom to increase rpm...I absolutely want to retain the original linkage setup and seem to need to pick a different carb to accomplish this. I'm looking for increased performance, not a "fuel efficient" carb...Maybe I have the wrong carb?? I have an intake with part # 2206384, and an NOS AFB carb # AO3131S. I Think I've heard of people using an edelbrock 1405, 1406 or 1806 AVS 650 cfm...what say ye?...

Thanks,

J.G.

 

[Davea Lux]

Hey guys,

Thanks for the welcome! I've got a 65 Fury III with the 318 poly that my grandfather bought new in 1965, he died in 1971. Car mostly sat til my grandmother died in 1988. I've had it since then...has a little over 40,000 miles! I've just done a COMPLETE suspension/brake/fuel system rebuild and added front and rear sway bars that transform the handling. Now I find I'm looking for a little more power to match the newfound sporty suspension. I'm trying to put a 4bbl intake and carb on it. The problem seems to be that the linkage is different for my current 2bbl stromberg. As it is now, the 2bbl linkage "pulls" from the top to increase rpm but the 4bbl carb seems to need a "push" from the bottom to increase rpm...I absolutely want to retain the original linkage setup and seem to need to pick a different carb to accomplish this. I'm looking for increased performance, not a "fuel efficient" carb...Maybe I have the wrong carb?? I have an intake with part # 2206384, and an NOS AFB carb # AO3131S. I Think I've heard of people using an edelbrock 1405, 1406 or 1806 AVS 650 cfm...what say ye?...

Thanks,

J.G.

They made the AFB carb that was native to the 318 poly in both a pusher and puller version depending on the year. They have different numbers on the rear of the base plate. This will take you to the parts list for your car, you can then look up the part number for the correct carb. (tools/reference section)
www.mymopar.com
If memory serves me correctly, I think they only offered the 318 poly with a 2BBL carb in 1965, so you might need to find one from another year that operates in the same direction as what you need.

Dave

 

[Jay Gibbs]

They made the AFB carb that was native to the 318 poly in both a pusher and puller version depending on the year. They have different numbers on the rear of the base plate. This will take you to the parts list for your car, you can then look up the part number for the correct carb. (tools/reference section)
www.mymopar.com
If memory serves me correctly, I think they only offered the 318 poly with a 2BBL carb in 1965, so you might need to find one from another year that operates in the same direction as what you need.

Dave

Thanks Dave...unfortunately the website only goes back to 1963...I think the last year for the Poly 4 bbl was 1961 or 62 so it isn’t listed...

J. G.

 

[Darter6]

I did my 64 Belvedere.Edelbrock 1406.Use their linkage adapter.You can reuse the kickdown linkage with a little bend here and there. Worked for me.

 

[Jay Gibbs]

That's great...could you possibly take a close up picture of the complete modified linkage assembly with the air cleaner off and post it so I can figure it out? Also, do you know the Edelbrock part number for the linkage adapter? I searched for a 1406 linkage adapter and couldn't find one...

Thanks,

J. G.

 

[Davea Lux]

Thanks Dave...unfortunately the website only goes back to 1963...I think the last year for the Poly 4 bbl was 1961 or 62 so it isn’t listed...

J. G.

66 poly went away in mid 1966.

Dave

 

[Jay Gibbs]

66 poly went away in mid 1966.

Dave

Yup...that's correct- poly went away in 66 but the last year you could get one from the factory with a 4 bbl carb was 61 or 62...

 

[Snotty]

As far as Polys go, I've always like this particular one!

 

[Darter6]

Sorry to say that car has been sold a good while ago.
Edelbrock lever adapter #EDL1481 at Summit.
Most auto part stores that carry Edelbrock products like Pep Boys,Autozone,O'rilley's have them in stock.

 

[Davea Lux]

As far as Polys go, I've always like this particular one!

View attachment 163998

The factory also produced a dual quad 318 poly in 1958 that put out 290hp which was a pretty good number in those days. Also did a 350 dual quad poly that year which put out 305hp. Both of them used the side draft air cleaners that Chrysler became famous for. Both went away in 1959 in favor of the 305hp 361 that produced 305hp with a single 4BBL setup which was more reliable and easier to tune although dual quads were again available in 1960 on the 361 rated at 310hp.

Dave

 

[Mr C]

66 poly went away in mid 1966.

Dave

Poly 318 was used in Canada through 67. Must've had a stockpile up North to burn through...

 

[Davea Lux]

Poly 318 was used in Canada through 67. Must've had a stockpile up North to burn through...

Either that or they shipped them north to get rid of them all in the same place. Didn't some of the Canadian varients also have a different displacement the the US ones?

Dave

 

[Mr C]

Either that or they shipped them north to get rid of them all in the same place. Didn't some of the Canadian varients also have a different displacement the the US ones?

Dave

I remember 303, 313, 318, 354 ...that's it I think.

 

[Davea Lux]

I remember 303, 313, 318, 354 ...that's it I think.

Those are most of the one's I remember. Not sure if that was a metric thing or just a different design element in Canada.

Dave

 

[Mr C]

Those are most of the one's I remember. Not sure if that was a metric thing or just a different design element in Canada.

Dave

Design element? You mean like our Plodges?

 

[Davea Lux]

Design element? You mean like our Plodges?

Sort of like when you put several teams of design engineers with the same concept to work and see what they come up with.

Dave

 

[Jay Gibbs]

I had thought about doing a dual quad 290 hp setup but had heard that they were difficult to get tuned "just right"...(I've also had a triple deuce setup gathering dust in my garage for 25 years that I figured would be a royal pain to set up and never did anything with)...

J. G.

 

[Davea Lux]

I had thought about doing a dual quad 290 hp setup but had heard that they were difficult to get tuned "just right"...(I've also had a triple deuce setup gathering dust in my garage for 25 years that I figured would be a royal pain to set up and never did anything with)...

J. G.

Those were one of those tune it today, tune it tomorrow and here ever after setups.
You could do that on the track, but for a street machine, it was very difficult to keep running right. Subtle changes in humidity, fuel octane and ambient temperature were among the various factors that made this combination a difficult beast.

Dave

 

[barnfind]

They have alot of cool factor to them

 

[Snotty]

Also did a 350 dual quad poly that year which put out 305hp.
Dave

Someone please correct me if I'm wring, but wasn't the 350 a B motor, a wedge and not a poly?