Good morning all. Just to give a quick background, I had a '94 4Runner with the 3.0 V6, 3" body lift, 33x14.50x15 tires on mags, no cat, dual Flowmaster 40 series mufflers, just a fun truck, then 4 weeks ago the engine blew on I-75 while I was on my way to Georgia for work, with my wife and kids, that was a bad day. That week I found a '93 Grand Cherokee in my price range, so I bought it, the down side is though it has a straight 6, it has 211,000 miles on it, it's got a rough idle, vibrates everything at a stop, runs good and smooth when driving though. I'm pretty sure it's the ignition coil, distributor cap and rotor, or the TPS. I plan on replacing them all anyway, but ultimately, I'm not a fan of fuel injection, and I'd like to drop a carbureted 318 in it. Here come the questions. Will a 318 bolt straight in? What models came with the 318 standard in the carbureted days? And anything else anyone can add in?

 

I appreciate the replies to the post. I considered the option of keeping the 4.0, but I am really not much of a fan of electronicly run engines. I may only be 29, but I'm much more of a fan of carburetors and V8's. I've heard a lot about this engine, and I have heavily considered keeping it, which I will for a while, at least until I can afford a swap. I've done most of a tune-up, just need the coil, cap and rotor, and I believe a new TPS. I changed the oil to run high mileage mobile 1, with mobile 1 filter, and a quart of marvel mystery oil, and I've been concentrated fuel system treatment in with every fill up, and I'm happy getting 21 mpg at the moment.

 

I will take that into consideration.

 

I definitely haven't over done it, after the third fill-up with a bottle in each, I've stopped adding the treatments. Considering I'm getting 21.5 mpg now that I've treated everything the way I did, and it's running better now by far, I think it'll do me good. I put 3,000 miles on it in this first month I've had it, and it's running better and better every day, just need to get a few more things done with it here, but that'll have to wait til it's paid-off. I like it thus far, but I still have the itch to pull the engine and drop in a rebuilt, carbureted 318. No matter what happens, I'm gonna probably do it, and keep the 4.0 to rebuild and have as a spare, or sell it rebuilt, considering there are so many people who love that engine in particular, but that will be many months away, I ggotta get my motorcycle first.