so i have a 1967 dodge dart 4 door and it has the original 225 slant 6 engine with around 998000 original miles still runs but needs new choke. i was wondering how hard it would be to eaither swap the engine with an 86 dodge 360 v8 or some smaller diesel engine any comments will help thanks

 

360 is a breeze when you visit here....http://www.engine-swaps.com/

and remember...more power means front disc brakes are recommended...tranny upgrade...new drive shaft and at least an 8 1/4 rear end...not a 7 1/4..

 

998,000 miles, or 98,000? I mean, I know they say the slant 6's run forever, but.... :-)

 

998,000 miles....

 

yeah 998000!!!!!

 

also thanks for the comments

 

The ease of the swap "is going to depend."

Motor mounts are actually the easy part. You either have to change the entire front crossmember, known as the "K" member because of it's shape, which will allow factory type mounts, or get aftermarket "engine swap" mounts. Schumaker makes them and seems to be the authority. Schumaker mounts will allow you to keep the /6 K member

http://www.engine-swaps.com/

The radiator may not be big enough, and the outlet on the bottom may be on the wrong side, I've forgotten. (273 engines had the lower outlet on the opposite side of later 318/ 360s, too)

Obviously, you'll have to deal with exhaust. The van manifolds may not fit. You'll either have to run down --probably just a left side-- manifold, or buy headers.

If the car has power steering, you'll have to either adapt the /6 pump to the engine, or adapt the 360 pump--if it has one--to the steering hoses in the car. OR it might just be a good time to consider swapping to a manual steering box. You'll have to either change the steering column shaft (different length) or buy an aftermarket adapter coupler for the purpose

You'll need the transmission with the 360, and these engines are "externally balanced" so you'll need a 360 torque converter. Your existing /6 transmission will NOT fit any other engine series.

The rear axle will most probably be the meager 7 1/4 axle, you'll want to look for an 8 1/4 or 9 3/4. Depending on whether the 360 has an A904 or 727 transmission, you will have to obtain a different drive shaft or at least slip yoke, the two transmissions are different. You may have to have a shaft shortened to fit.

Consider the brakes. It probably has 9/10" brakes, at least only 9" on the rear. If you upgrade the rear axle, it will probably at least have 10" brakes on the rear.

There are a couple of ways to upgrade the front brakes. If you don't drive it too hard, you might get by with 10" on the front if they are right up to snuff.

Otherwise, consider upgrading the front to disk brakes. This gets to be a dilemma / project all by itself. Your 67 has the earlier "small bolt pattern." If you buy the control arms/ disk parts off a later 73 or so Duster, it will bolt on, but the wheel pattern will be the later 4 1/2 circle, standard on all of the larger cars, and the later A Bodies. If you score a rear axle out of the same car/ same year with front disk, the rear of course will also now have the larger pattern.

If you don't decide to go with the larger bolt pattern, and if you find a larger rear axle out of a "small bolt pattern" car, you can get aftermarket disk brake kits that convert to disk, and keep your original "small" wheel bolt pattern. One of these is sold routinely on Ebay called "Thunderbird"