slant 6

Could anyone tell me if the slant 6 engine is good on gas. i am fixing to buy a dodge and i know nothing about it. i have always owned chevy's and ford's and haven't had good service with either one so i am hoping that the mopar world can be more reliable than the other two companys. thanks a head of time for the help.
Sincerly,
John T.

I had a slant6 in a 75' Dodge Dart. I beat the CRAP out of that car. I replaced a rear axle, radiator, and a few other smaller things. The motor ran flawlessly.... I can't recall gas mileage, but I know it was WAY better than the 77' Fury cop car (440-4bbl) I had next!!!

We had an old 80's Dodge pick, 1/2 ton short bed, at my first Squadron in the AF, It seemed to do well on gas....but we never went over 40 mph on base with it either.... Guess I wasn't too much help after all....

I had a mid 70's 1/2 ton 2wd with a 6 and 3speed on the colum. It got little better than 20 on the highway if you drove it nice. And yes, they will take any asskickin you can give them. We tried to blow one up once by putting cilica sand down the carb while it was running! It smokes really bad blue but it still runs to this day and that was prob 6-8 years ago.

I remember reading a story where a guy decided to blow up his slant 6. He put a brick on the gas pedal and went in the house. I can't remeber the exact amount of time, but I think it was something like 10 minutes he went outside and shut the car off, the engine still hadn't blown! Probably the most reliable engine Ma Mopar ever made.

The slant 6 should be better on fuel than a small 8 if the vehicle in question is not to heavy. My old Aspen R/T had one and I got better milage than my friends 81 Z/28 and I could stay with him on the highway.

Isn't it sad that they put a 225 in an "R/T"?

I used to own a 1977 Aspen s/w, slant 6. I can't remember the displacement, but I do remember the engine was solid, along with the transmission.

As for fuel economy, it wasn't too bad, I would drive it to school M-F and at first I had decent fuel economy. I then decided to do a tune up, and not knowing what I was doing, just put the spark plugs in the motor without gapping it correctly or torquing it correctly. My fuel economy plummeted after that.

The only thing that annoyed me about the engine was that it hated moist weather. Any kind of rain, snow, or even fog, the car would sputter and stall like crazy, until the engine warmed up anyways. I could drive it in dry weather without any problems, but when it came to wet weather, the car would stall.

Mine used to stall as well in damp weather. A quality dist cap would have probably helped I guess.
Hurricane my mistake, it was a SE not a R/t like i said.

Originally Posted by SPs 77 Dodge

Mine used to stall as well in damp weather. A quality dist cap would have probably helped I guess.
Hurricane my mistake, it was a SE not a R/t like i said.

I'm not sure, but I think chrysler carbs are super sensitive to moisture, especially the older ones like on the slant 6.

BTW, you said 'quality distributor', maybe I shouldn't have bought the stuff from Canadian Tire !

I have an 86 1/2 ton 2wd with the slant 6, and the automatic. If I drive about 55 on the highway, i can get about 22 mpg. A couple of quick runs at about 70, and I averaged about 16-17. Thats with no overdrive of course. The engine is very reliable (it was my highschool truck) and it got used and abused. With 190,000 on it, she still fires right up, and burns no oil. I have never had any problems with it. A little low on power for a full size truck, (pulling a trailer) but if ya give it time, it'll get er done.

Yeah, It's a shame that Chrysler didn't adapt the slant 6 to EFI...but I guess everyone had to go V6 at some point. I was reading on allpar.com that Chrysler did hame some variants of the slant six in the works back in the late 70's but never were built.

Originally Posted by Dodgevanman

Yeah, It's a shame that Chrysler didn't adapt the slant 6 to EFI...but I guess everyone had to go V6 at some point. I was reading on allpar.com that Chrysler did hame some variants of the slant six in the works back in the late 70's but never were built.

I agree, having the slant 6 as fuel injected would be sweet. I mucked around with that car alot, and many times without a manual, and it still kept on going.

I thought it was funny that when Jeep got rid of the 4.0 straight 6 Chev came out with a straight 5 cyl. for the trailblazer. I drove the crap out of my slant 6 and it would not die. I do see the odd one at car shows all fixed up that look good still. I have a pic of one with all Offenhauser parts that looked real good on my cardomain site..

I still love my slant-six. I call it the Leaning Tower Of Power. 29 years old, and still runs good. Very easy to work on if I need to. Unlike today's cars, you can not only see the engine, but you can see the ground underneath of it. I get about 18-19 mpg mainly driving around town. And still passes the emissions inspection every other year. Not bad for an engine originally designed in the late 50's.

Has anybody ever had this problem? Accelerating down the road goes through 1st,2nd,3rd and as you accelerate in 3rd it starts to sputter until you let off the gas then when you accelerate again it does the same thing. If you keep your foot on the gas it will eventually just kill. I was told it could be an old fuel line that is collapsing when more gas is passed through. PLEASE HELP!!!

Try replacing your fuel filter. You may have a piece of scale or dirt that is allowin flow at low speeds but is being sucked into the opening when you apply the gas. Also check that your choke is opening properly, it sounds almost like the vehicle is flooding.

ok i have a question.
i have a 1984 D100 full size pickup.slant 6, 3 spd auto 2wd.
i read on another site that in the mid 70's they improved it with a different intake, and the same 2 brrl carb from the 318, and called it the "super six"
how much of a difference would that realy make, as far as hrsp.

oh. i remembered the site. its
http://en.wikipedia.org/wiki/Chrysler_Slant_6_engine

Technically it's not exactly the same a 318 2bbl. because the jetting is different. The 225 was rated at 140 gross HP (at the flywheel) and with the 2bbl. you'd probably see a 10-15 HP increase and the torque would improve as well. If you want to swap over you need to go to a junkyard and get everything off of a Super Six car. I don't think trucks ever had the Super Six. The Super Six stuff is getting harder and harder to find because none of the parts are being reproduced and it's getting to be a popular swap.

The Super Six two bbl. originally came out on the the Aspen/Volare wagons and was rated at 10 more horsepower and 10 more pounds of torque than the one bbl. So 110 hp instead of 100 at about 3600 rpm's, and I think the torque was 180 instead of 170 for the one bbl.
If you can find one, make sure you get all the linkage from the carb to the transmission. But then again, it might not fit on a truck. You might want to check into that a little further.