Slant six single, to slant six double.

[volaredon]

Spending a LOT on a /6 is not worth it in my opinion.....because at the end of the day it is still only a 6 cyl.....& still only 225 cubes.

I would put a 2bbl Weber carb on it. Racetep in Calif or Clifford Performance will have what you need & can probably supply the correct jets, emulsion tubes, etc to make it a bolt on deal.

We need the red X back
I actually put more into my last /6 because of all the V8 conversion parts I didn't have to buy and didn't have on hand.... Trans, motor mounts, exhaust and more.... I haven't had a "fast" car yet and at this point in life probably won't....
But I improved my/6 quite a bit over what it was originally... enough to notice for sure.
Would I want one for everything? No. I wouldn't want to try and pull my 28' camper with one, but for the daily grind back n forth to work it'll do the job just fine.

 

[Jim Kueneman]

We need the red X back
I actually put more into my last /6 because of all the V8 conversion parts I didn't have to buy and didn't have on hand.... Trans, motor mounts, exhaust and more.... I haven't had a "fast" car yet and at this point in life probably won't....
But I improved my/6 quite a bit over what it was originally... enough to notice for sure.
Would I want one for everything? No. I wouldn't want to try and pull my 28' camper with one, but for the daily grind back n forth to work it'll do the job just fine.

Agree, a nice running slant puts a smile on my face everytime. If I want a fast car I would not be looking at a classic car. Modern muscle cars do everything so much better and get better mileage than my slant!

 

[RustyRatRod]

Going to a two barrel is like going to a whorehouse and leaving your money at home. You won't get much out of it without upgrading the exhaust too.

 

[Cudafishboi]

Going to a two barrel is like going to a whorehouse and leaving your money at home. You won't get much out of it without upgrading the exhaust too.

The set up i went with came from clifford performance which included headers. So I hear ya

 

[Cruisingram]

See the car in my Avatar? That is what happens when you decide to go V8. It's never enough LOL. However, my four door 68 Dart is getting the treatment advised here as I type. Milled head, Oregon cams. Weber 2bl, exhaust manifold bored out to 2.5 inches and port matched along with intake. I have really tall gearing in the rearend I am probably just going to live with. Once I get it all together, I will take it over saddle road on the big island. If it cruises at 65 over the top to around 4500 feet after leaving from sea level, I am leaving it alone. It it won't, mild turbo. 6psi max. It's a fun new challenge for me- this is the perfect island getaway car for the wife and I, four door, can bring friends, wows everyone, super low miles (26k) , runs like a top. Main mods are the engine stuff I pointed out and AC. In the process of completely changing out the suspension right now. All big bolt patter and brake upgrade.

 

[michiganpat]

if it's the long runner aussiespeed hurricane manifold, I'm interested to find out how it works....I *think* all the aussiespeed 2bbl manifolds are a holley 2300 bolt pattern. my duster is all stock, 1bbl slant6, A833OD with 3.23's, and it keeps up with modern traffic just fine, but would like a little more pep while keeping the 6. if you want to go the decked block/head/cam route, you may want to just find another engine and do those mods to that, so then it's a couple day swap to minimize downtime with the car, vs. having the engine tore apart for a month+ where you can't drive it....

 

[slantsixdan]

clifford performance

Oof.

 

[Cudafishboi]

Oof.

Can't find an offy intake, as well as the 6=8 set up comes with dang near everything needed to do the conversation. Im not really seeing the issue

 

[MidnightSwinger]

Can't find an offy intake, as well as the 6=8 set up comes with dang near everything needed to do the conversation. Im not really seeing the issue

Summit has them too with free shipping

5270LK Dodge Slant Six Intake Manifold

The Clifford manifold has a very large plenum and is not conducive to a stock motor, especially with a stock cam and exhaust, running well.

 

[Cudafishboi]

Summit has them too with free shipping

5270LK Dodge Slant Six Intake Manifold

The Clifford manifold has a very large plenum and is not conducive to a stock motor, especially with a stock cam and exhaust, running well.

But I also dont want a barrel haaha just wanted a 2.

 

[RustyRatRod]

But I also dont want a barrel haaha just wanted a 2.

A lot of people use the 4 barrel intakes with a two barrel adapter.

 

[Cudafishboi]

A lot of people use the 4 barrel intakes with a two barrel adapter.

Oh I see, thank you.

Does anyone have a link to a Webber or carter 2 barrel carb?

 

[RustyRatRod]

Oh I see, thank you.

Does anyone have a link to a Webber or carter 2 barrel carb?

Well, That's kinda complicated. The Weber 32/36 progressive carburetor would be fantastic......if it was maybe a 40/42. But it's not. So it's really a hair too small for even a stock 225. A stock 170 and it would probably be a good match. There are plenty of other Webers, but IMO, a staged two barrel would just perform great.....but there are none really big enough. What I would do would be to run the Holley 2300 two barrel. Either the 350 for mild applications, or the 500 for more serious engines, such as turbos, higher compression, bigger cams, headers and such. You could also use a Carter BBD off a 318. That would be a good upgrade for a mild to moderate 225.

 

[RustyRatRod]

Just asking, but what do you have against a four barrel? You will ultimately get better efficiency and mileage with one, provided you don't have the gas pedal on the floor all the time. I have a Quick Fuel 450 VS on mine and it runs fantastic.

 

[Cudafishboi]

Just asking, but what do you have against a four barrel? You will ultimately get better efficiency and mileage with one, provided you don't have the gas pedal on the floor all the time. I have a Quick Fuel 450 VS on mine and it runs fantastic.

I mean im not against it.
I think I just dont know enough about all this to do it?

Just a little back story im a strike officer in the navy so engines arent my primary wheel house.

Anyhow, I just thought the kit from clifford performance would be the easiest as far as mild upgrades. If I went the 4 barrel route what would I ABSOLUTELY have to change?
1. The intake
2. The carb
3. The exhaust
4. The linkage

If its just those things then yeah absolutely will go 4 barrel. I think in my head I was like im not trying to do 100+ down the highway. However if it gives me a serious kick in power for the same price of a 2 barrel conversation why wouldn't I.

 

[RustyRatRod]

I mean im not against it.
I think I just dont know enough about all this to do it?

Just a little back story im a strike officer in the navy so engines arent my primary wheel house.

Anyhow, I just thought the kit from clifford performance would be the easiest as far as mild upgrades. If I went the 4 barrel route what would I ABSOLUTELY have to change?
1. The intake
2. The carb
3. The exhaust
4. The linkage

If its just those things then yeah absolutely will go 4 barrel. I think in my head I was like im not trying to do 100+ down the highway. However if it gives me a serious kick in power for the same price of a 2 barrel conversation why wouldn't I.

That about sums it up. Plus of course tuning everything to work together, which is necessary no matter how many barrels you have. Don't let me talk you into something. If you have a plan, go for it. There are no wrong answers.

 

[Cudafishboi]

That about sums it up. Plus of course tuning everything to work together, which is necessary no matter how many barrels you have. Don't let me talk you into something. If you have a plan, go for it. There are no wrong answers.

I mean after reading the plethora of reviews in here about clifford im definitely hesitant.

I can sus out what carburetor and such probably go with a 400 cfm like a holley slayer.

How did you sort out the linkage for yours?

 

[RustyRatRod]

I mean after reading the plethora of reviews in here about clifford im definitely hesitant.

I can sus out what carburetor and such probably go with a 400 cfm like a holley slayer.

How did you sort out the linkage for yours?

Clifford's products are good. Their customer service is so poor that it makes you want to look elsewhere. I just swapped to the early A V8 gas pedal that uses a cable instead of solid linkage. Very simple.

 

[Cudafishboi]

Clifford's products are good. Their customer service is so poor that it makes you want to look elsewhere. I just swapped to the early A V8 gas pedal that uses a cable instead of solid linkage. Very simple.

Oh ok sweet.

Well definitely have some thinking to do. Currently rebuilding the engine so now is good as a time as any.

 

[Bewy]

I gave you the Weber link in post #25. Racetep in Calif. They have EVERTYTHING Weber & great to deal with. I live in Australia. When US suppliers hear that, many do not want to do business because it is too much trouble with shipping etc. With RaceTep, it was no trouble.

 

[slantsixdan]

Can't find an offy intake, as well as the 6=8 set up comes with dang near everything needed to do the conversation. Im not really seeing the issue

…then you might not have read the linked post, and the links it contains.
I hope it all works out for you just the way you want, but.

 

[halfafish]

If it helps your thought process...

The slant in my truck is a low-to-middlin' build. About 8.2 compresssion, oversize valves, head cut .060 with a light pocket port job. Offy 4-barrel with an AVS2 500 carb, Clifford shorties to a single 2.5" exhaust. 833OD with 3.55 gears and 28" tires. It will very much get up and go if you want it to, even in a heavy non-aerodynamic vehicle. YMMV of course, but this thing is a hoot to drive.

 

[RustyRatRod]

If it helps your thought process...

The slant in my truck is a low-to-middlin' build. About 8.2 compresssion, oversize valves, head cut .060 with a light pocket port job. Offy 4-barrel with an AVS2 500 carb, Clifford shorties to a single 2.5" exhaust. 833OD with 3.55 gears and 28" tires. It will very much get up and go if you want it to, even in a heavy non-aerodynamic vehicle. YMMV of course, but this thing is a hoot to drive.

Non slant people will never understand the instant off idle torque of a 4.125" stroke crank. It is indeed a hoot. lol

 

[RustyRatRod]

I gave you the Weber link in post #25. Racetep in Calif. They have EVERTYTHING Weber & great to deal with. I live in Australia. When US suppliers hear that, many do not want to do business because it is too much trouble with shipping etc. With RaceTep, it was no trouble.

There are no links in post #25.

 

[RustyRatRod]

Oh ok sweet.

Well definitely have some thinking to do. Currently rebuilding the engine so now is good as a time as any.

Anyway, this is my 64 Valiant, Vixen. 225, 3 on the tree with 3.23 gears. She doesn't weigh much over 2800 pounds and may be under that a little bit. As I told you via private message, this engine in this incarnation was an accident due to the head slipping off the broach at the machine shop and being milled crooked. I had to take it to another shop with a different style machine to get it back straight, where all the chambers were the same size. It went from 58cc to 34cc chambers. So, I had to have a camshaft with no less than a 66 degree intake closing event, so I went 70 for good measure and it runs fine on pump gas. I did have some detonation issues early on, but have long since tuned those out. I have been driving this daily sometimes since about 2019.