How much Money would it be convert a fwd car to a awd car

This is another very open-ended question. The first way to approach this conversion would be to actually convert the existing drivetrain of the FWD car to AWD a component at a time. And this approach could be done in quite an amazing number of ways including from the single component up to assemblies and with components from any other cars. I wouldn't recommend this as it would be, while satisfying and challenging, unnecessarily complicated, difficult, time-consuming, duplicate the work of all the engineers who have designed and developed other AWD platforms and, frankly, dumb.

The better way, and, IMO, the practical way, would be to simply choose a car with FWD and AWD configuration models that share as many components as possible, get that AWD version from salvage or a used car dealer (a new one is pretty silly, since all you'd have to do is sell the FWD and use the AWD). Find the minimal number of different AWD components and swap as few as possible into the better-condition (I'd assume) FWD. This would be a bit of work, but, depending on the year, model and condition of the cars, much, much less expensive, easier and, due to it ending up with a configuration that the engineers have already designed and tested, more dependable. And likely a lot more resellable.

In my case, I worked on a Pontiac Montana that came in both FWD and AWD versions. The problem in that regard was that the AWD was an "extended" version that had many components that were beefier and very different from its FWD version. Getting under the vehicle, you could see the drastic differences in the drivetrain and suspension. When I first tore into that car, I was often frustrated by getting parts from the auto supply that didn't fit, because they would often assume I had the standard chassis and give me a lesser or smaller component, like a brake rotor that was significantly smaller and I had to make a trip back to the store. However, there are some vehicles where the FWD and AWD versions share quite a bit more specifications. The problem with this is that you have to do research. You can ask mechanics who have worked on your particular model. But the best way to do this today is to decide on a particular pair of vehicles that come in both versions, get tech specs and drawings from DIYAUTO or some such site, and look over the two descriptions for servicing the drivetrain component ts. Then put a list of parts together and get on any other sites and search for replacement parts for each subassembly. Look over the part numbers and see which are different. If you see two part number for the same part that are different for the two vehicles, check to see the part number of the part that it attaches to. If you find, say, a bigger axle assembly with a different number that bolts onto another part, like a body or body mount, that does NOT have a different part number, you're in business. If you find areas where the parts differ only slightly and you could saw or grind or torch or put in a bigger bolt or washer to make the two fit together, boom. Sometimes you might have to get into welding an entire new structure on, but I'd avoid that. It may be fun, but you might also end up with an undrivable (at least for what you need it for) or unserviceable (or difficult to service or find parts for without a lot more work) mess.

If you find a good candidate pair of vehicles at a reasonable cost, it then all comes down to planning and research. And you should definitely accept the occasional failure sitting at your computer then what I had to put up with before we had such stuff like databases and the web. I'd get some parts, get under the car with a wrench and torch or something and spend hours cursing at inanimate objects. I did end up with a '68 Caprice made up of almost 50 percent junkyard salvaged parts, but as a teenager, completing that monster, you'd think by my expression I was driving a brand-new Rolls. And after that experience today, when I look at a car, I've got that mental image of the Superman X-ray / Terminator Data window think going on in my head, knowing all the stuff that's inside it and feeling really, really smart :-) .