XJ6

I found a 267 small block bored and new heads and cam and im wantin to drop it in my jeep, what tranny will i need? My AX 5 aint gonna cut it

mdnov

Not trying to burst your bubble or enthusiasm, the 267 is, for lack of a better word, a boat anchor. Look at any small block building book, they say stay away from the 267. It does however have the same outer dimensions as all other Chevy small blocks. I would go with another engine. As far as the transmission, the AX 15 could work as long as you keep your foot out of the radiator.

mdnov

BTW. I had a 267 in a 1979 El Camino. Pontiac had a similar engine. The Pontiac 301. Another boat anchor.

cdhebert

Yep. Worst motor ever to do a sbc conversion with. Even a junkyard 305 would be a significantly better choice...

FYI - That 301 was about 100 horsepower normally aspirated. They made a turbo version of it in some of the "pace car" edition firebirds that was still a total piece of garbage.

cdhebert

Around that year range, they made some Malibu and El Camino "GT's" with the 267. I'm pretty sure they were sub-150hp also. Terrible...

cdhebert

Another note. Food for thought.
The 267 has a displacement of 4.3L. You can get the same displacement from a GM 4.3L V-6. Probably much easier to stuff 2 less cylinders in that engine bay if your are dead set on a swap.
You could stroke the 4.0 and get more displacement than a 267 and not have to fab or convert anything. Your Jeep will never be a race car anyway.
Good luck!

XJ6

It is a 267 bored to take a 327 piston with a 283 crank 58cc 400 heads 498/501 lift cam Holley 600cfm carb, i mean besides it being a boat anchor what is so bad i have a 2.5 with a stock carb it cant be worse than that

cdhebert

The 327 piston is a full .5" bigger than the 267's. That's a lot of metal removed from your block (depending on the year of the block, it might not even be possible). Also, the 283 has a shorter stroke than the 267 (by a lot). You would be effectively building a small journal 302, although the strangest way possible, I think. It would also have the terribly weak bottom end of a 267.
Unless you know this guy to be honest, I would do some serious digging into this engine before you trust those specs.
I'm not saying it can't be done - I would question, why?
You have so many options for upgrades from a 2.5 that wouldn't require nearly as much work.

XJ6

What more can be done to a 2.5?

canada_man

4.0 TB, Upgrade injectors, cold air intake, cat back exaust, etc. There are tons of upgrades you can make to your 2.5 to get more out of it. Just do some searching on the forum

XJ6

If it was fuel injected i'd fo that, thats how my newer wrangler is set up, my 85 cherokee is a carb buddy

Luke95

4.0 swap?

XJ6

Nah i mean i like the 4.0 reniux more than the HO version but i want something different, cause where im from every cherokee has a 4.0 practically and its nothing special its between the motor i mentioned and a 302

rollingstone

But since you have a 2.5, you have 4.10's in your differentials. I bet if you did the 4.0 swap, you'd be one of the only ones with a 4.0 and 4.10's.

XJ6

Okay come at.me with this, more power out of an 85 carb 2.5l. How can i achive this?