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The date on the block is 7-1-1970.

I'm looking at possibly purchasing a 1971 340 motor, the seller has it listed as "*Motor is cast in 70 but marked as a 71 block" . So I what exactly does that mean. I want to installed it on a 1971 Demon. Thanks.

Good afternoon; I have a 1971 H code 340 4 speed Demon, all original execept it has a 1969 stock 340 motor. My question is would it be worth looking for a 1971 340 knowing its still will not be numbers matching but correct year or leave it with the 69 motor.? Thank you.

I'm thinking I would have to add a power brake booster and all that goes with that.

is the spacers that you are referring to; are those going to give the look like if the tires are sticking out of the wheel well. Don't care for the doughnut type of appearance on a car.

so all of the drum brake mopars are small bolt?

1971 Demon 340 4 speed, no power brakes drums all around, want to convert to big bolt pattern and stay with drum brakes. What is involved and where is the best places to get the parts...salage yards, auto parts etc. Thank you. El Diablo.

ok guys, driving my 1971 Demon on the interstate after swapping rear ends, went from a 3:91 to a 3:23 it has a 340 4 speed anyway I had the phone with a speed odometer ap showing the actual speed and from 0 to about 20 MPH the speed were pretty even but as a picked up speed the reading became...

Has anybody order any exhaust parts from Classic Industries? I'm looking to order both left and right head pipes 2 1/4 inches for my1971 Demon 340 4 spd with original manifolds. Would like to see any positive or negatives inquires about them. Thank you all. El Diablo.

1971 Dodge Demon 340 have original manifolds on it, the left side down pipe is 2 inches and it seems very titght around the clutch and starter in fact who ever had it before me looks like they had to smash and squeese around that area to make it work, the right side is 2.25. what is the original...

just swap my center chunk on my 1971 Demon from 3:91 to a 3:23, everything went good, question I have is what determines when I would need to adjust the axles? Thank you El Diablo.

Toolmanmike, i appreciate the quick response.

Thank you ToolMike, another thing i forgot to ask, how much does it take...I have read before that it takes a gallon???

1971 340 Demon 4 speed, want to change oil on my 4 speed, what oil do you guys recommend? Thank you. El Diablo.

if the belts are still available i would like to go ahead and arrange getting the belts from you.

Awesome web site, thank you!!!

Looking for the front bucket seat belt buckles for a 1971 Demon, the ones in the back seat have a number 600-1 stamp on the metal, don't have a the label on the fabric, color is balck. Any one selling a set of them let me know?? Thank you.:blob:

looking to replace the current exhaust on my 1971 340 Demon from the originals manifolds back to the mufflers, do you guys recomend a kit and if so which one? thank you

I got your reply telling me your asking price of $140.00, can you tell me how much for shipping?

IT was hard to tell, are the seat belts black? what kind of shape are they? how much for the seat belts.

do you still have the sway bar? :D

3:91 now, soon 3:23

getting ready to swap center section on my 71-340 Demon, going from 3:91 to 3:23 sure grip. I have decided to use synthetic but not sure on the viscosity, 85W140 OR 75W90, the car is stock and I live Georgia. Any suggestions??? I will add a bottle of the sure grip additive. Thank you.

trying to remove the rear spoiler on my 71 Demon, i remonved the thru bolts that attaches it to the brackets, don't want to force it bit it is not pulling off, do i need to remove the hinges from the wing?

my 1971 Demon has the rear wing, when I bought the car the wing is slightly bowed almost like if it has been pushed on to close the trunk for a while. Is there a way to straighten the wing? Thank you

looking for a head light / dash dimmer switch for a 1971 340 demon. When i turned it it seems to just work on a small band of travel, barely can see the dash lights. :burnout: Thank you

Used to have a 1970 340 Cuda, always noticed that the dash lights were very dim even after turning the light switch to full bright; also the driving lights would dim in idle, now to the present, my 1971 340 Demon does the same thing....any suggestions , thoughts ????:banghead:

Thank you Trail Beast.

good afternoon, looking to replace the points on my 71 demon 340, I think I decided on the pertronix ignition II, can I use my original coil? Thank you

Ok, I will look into those and see what I can come up with, I think the small to large combination u- joint should work. Thank you