90xjguy

Im wanting to drop a 4.7 stroker in my 1990 XJ. Im thinking itll run at about 2g or so. What all am I looking at for the build? Also will it still pass smog? I know this isnt the first time someones done this. Give me a shout please! Also just outta curiosity mpg, hp torque. etc

victorlanda

i think this might help or at least they might have more info.
http://www.jeepstrokers.com/forum/

dpace7XJ

I did the stroker, 4.7, i paid about 3, but i went all out with high end parts and stuff. Mine passed smog ok, but not as easy!! I get about 17mpg, but i havent upgraded my injectors yet, so it is runnin pretty lean right now. Great power though, wish i could tell you exact specs, but i'm sure someone will chip in!

Bustedknuckle

CoffeeCommando has a 4.7 stroker as well. I rode in his a few months back, thing gets down and boogies.

Donnie_K

you'll need the crank and rods from a 4.2 and I think some .40 over pistons for the 4.0. The type of pistons you choose depends on the cam and how far you deck the block or mill the head. Most of the time people are having to have the machine shop remove some metal from the top of the pistons to get the compression ratio low enough to run pump gas. you will need the upgraded injectors... lean conditions are bad for motors, especially ones you just put a couple grand into.

Senate21

or do it this way. but this guy didn't seem to gain much power wise :\

http://www.rockcrawler.com/techrepor...er40/index.asp

90xjguy

now will my stock d35 axles be able to handle the power? I already planned on putting an 8.8 out of a ford explorer. I her its straight bolt up, stronger, and also disc brake conversion. But id like to not have to changethe front for a while

dpace7XJ

I did the 8.8, Not really a straight bolt up..gotta weld new perches and shock mounts, and you can get one with disc brakes!! It is an easy little swap though!

90xjguy

What would bemore preferably? that or d44s front and rear?

dpace7XJ

In my opinion, an 8.8 is way better than a 44 as far as strength. Plus 8.8 are out there everywhere, and i got mine for 150 at a jy with the disc brakes. Now if you wanna go full width, 2 44's arent a bad option, or even a 44 and a full width 8.8 which are a bit harder to find...It's all just what your preference is

UsmclovesXJ

what if i droped in a 350 small block engine? more hp and everything then a stoker....and cheeper

dpace7XJ

Pain in the butt, stroker is easy, wont have to mess with adapters and all that crap. Aaaand a 4.7 belts out just about as much torque as a 350 i've heard. Anyway, i just think its a perfect way to give some power to ur XJ

UsmclovesXJ

very very ture there..could always go snag a big block and drop it in there jk. i think strokeing the engine probly would be easyer.

dpace7XJ

Haha, yeah big block!!

Jeepjunky

im working on my stroker project right now, still need some things from my engine builder like the crank and rods. but he did the motor a year ago and im guna be using it pretty soon. it got bored over 0.030", Comp Cam. i still need the double roller timing set, roller rockers, hi-flow water pump, new pushrods, injectors and a mean green alternator