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The JBA diff will support 4.88, but not 5.13.

I sold it because the V8 swap was supposed to compliment the SFA swap that I never received Rock Lizard took tens of thousands of dollars of my money and ran off with it without delivering a single thing. His excuse was that he needed to pay for legal fees for a child custody case (which...

Small world, indeed! My wife was the one who spotted the beast as we were driving down the road. It was a pleasure to meet you, Troy! Here's what's up with the V8 swap; it obviously can be done properly, but you have to be prepared to dedicate your KJ to becoming a full-time toy - which was...

You're not being mean. I totally agree. Had I been able to complete the SFA build like I had originally planned, I would've been a happy camper. But I didn't and now I've basically ruined a perfectly good Liberty. Nobody will buy it down there as gas is nearly $5/gal. It's not worth it in...

I'm glad everyone enjoyed the video. It took me long enough to get something decent posted, right? Anyway, there's the proof that the swap was successful and that it still runs after all this time (speedo stopped working but I don't think that will be too difficult to figure out). This is the...

Here's a better video. Warning: VERY loud at the last 5 seconds. http://youtu.be/C02fCXvs0Go

Burn outs? lol that thing is a tank!

http://youtu.be/b0OPHBe8L5o

Thanks bro. Unfortunately the SFA ship has sailed and I have zero desire to revisit it again. So that's that.

Very kind of you, Jbergun. Thanks.

I hope someone gives the 5.7 a shot. It will fit, but it will require the 545RFE transmission and TCM. Whoever does it will also have to cut nice size hole in the hood since it sits much taller than both the 3.7 and 4.7.

Haha. You picked up on that, huh? That was the result of some creative carving.

This is all that I've taken - it's not new or anything. I'll get some other videos posted when I get the chance, but this is pretty much all that I have that's worth looking at. https://www.youtube.com/watch?v=V_PwhhH20rk I had high hopes for the V8 SFA project, too. It truly was going...

I'd say the mileage with 4.56 gearing works out to a little over 12 mpg. Pretty bad and, no, it hasn't been tuned.

I'm still around guys and the V8 KJ is still on the road. I don't drive it very much since the original intent was to do a full SAS which unfortunately never happened since the person that I bought the kit from took my money and never delivered on anything. It's too powerful to take off-road...

Maxing fuel economy in a KJ? Wow, those were the days!

The front drive shaft will have to be lengthened to make up for the difference. No way around it unless you'd rather replace your fan with an electric slim and keep the engine position where it would be without moving it back. The mounts will have to be fabricated after you've decided how far...

Yeah I am definitely going to have to clean this up into something useful. I'll start work on it this week. Thinking that the V8 KJ write-up should probably get its own section rather than buried down in the General threads but that's not for me to decide. Mods/Admins, what do you think?

The latest. Need to change out the belt tensioner, and the speedometer sensor went bad. Unrelated to the swap. 4.7L HO KJ - YouTube

IT'S FINISHED!!! Took it home from the shop not earlier this afternoon and I have to say that this thing is absolutely amazing! There is a massive noticeable increase in power and that's just driving normally down the road. This, this right here, is how the KJ should have been released...