How much does it cost to stroke a 302 to a 347?

1992 ford mustang 302 5.0 and I want to stroke it to a 347. Is it possible to do this without boring? How hard is it to do for a person who has never done it before but has some mechanic experience? Can I switch it to a carburetor rather than fuel injection?

Engine stroke is not related to the bore. You could stroke the engine to 347 without boring it. The cylinders would at least need a hone, have a machine shop measure the current bore and determine if it can just be honed or if it needs to be bored. Also have the shop magnaflux the block to check for any cracks and balance the rotating assembly. Building a long block is very precise, you can tackle it with a good amount of know how, a good set of feeler gauges, a good torque wrench etc. You can always switch from fuel injection to carb if you really want to.

Nothing will need to be ground to clear the counterweights of the new rotating assembly. A 347 is no less reliable versus the 331. Issues that the 347 once had have since been fixed with new stroker kits.

At the very least, have a shop magnaflux the block, bore it if it needs, and balance the rotating assembly. The rest of it you can do yourself but you are going to spend some $ on a few good reliable tools and have fun learning as you build…

As for cost… It will vary a huge amount depending on what you want. I beam rods, H beam rods, forged pistons etc etc. You could probably pick up a basic crank, rods and pistons for $1000. You need to know what your long term plan is for the engine before you start buying parts. Will it have forced induction eventually? High or low compression? The list goes on and on. Have fun

Depends on the condition of the bore. You will have do a little grinding to clear the new crank's counterweights.

Personality, I would rather do a 331 if the Mustang is street car. A 347 to me reduces reliability of motor.

Edit: Can carb it if it's legal where you live.

Changing the stroke (crankshaft and connecting rods) does not increase the bore size. But engine build up is not for the faint hearted. As it has to stay surgery clean throughout the whole engine build up.

remember to put in some new piston rings at the same time.

and now they go up to 363ci if you don't feel up toi building it, a engine builder can do the job for you.

To increase an engines stroke, we replace the crankshaft and the connecting rods (and often pistons, rings, and bearings), which requires a rebuild. Boring out and induction are different matters, and can go either way you prefer. Parts will be about $1500. You can do it yourself but a machine shop can balance things as they go and they can get everything just right, so it may be worth it to have a good machine shop do the work.

Here's some stroker kits.
http://www.coasthigh.com/Ford-302-based-engine-kits-s/1304.htm

Maybe check out some mustang forums to see what others do successfully with their 302's.