40 build

[AllenAllen]

I would like to get some feed back on my build. I have a 40, and I have a rolled 97 ZJ grand Cherokee. The 40 has zero powertrain. Pretty much a rolling frame and body. My point is, I wanna put the EFI 4.0 Auto trans and t-case, in the 40. I also wanted to swap the Dana 30 and 35 4 link set ups off of it to the 40.

Any of you think it would be worth the time? Doing the work is not a prob for me. Just would like some input.

Thx,
Allen

[brokenparts]

I'd search for at least some LC drivetrain... the dana 30 and 35 are a downgrade from the LC junk.... especially if you can find some 60 series stuff.

[AllenAllen]

the only draw backis if I have LC axles I cant use my jeep eng, trans and T-case. Pumpkins r on diff sides

[fj40forlife]

Get a t case. thats pass side drop and a center rear end from a pick up. But i would never evne put does jeep axles under a fj40

[Hottrod81]

I think you would be highly disappointed.

[LCOwner]

The 4.0 is not such a bad engine once they put the EFI on. And the auto is as good as any other. If you dead set on doing this I'd look for a Dana 300 and put that in rather than the 241 (or what ever it is). Keep the LC axles if you can they're way better and can be upgraded to beyond what that 4.0 can put out.

[Tapage]

Originally Posted by LCOwner

The 4.0 is not such a bad engine once they put the EFI on. And the auto is as good as any other. If you dead set on doing this I'd look for a Dana 300 and put that in rather than the 241 (or what ever it is). Keep the LC axles if you can they're way better and can be upgraded to beyond what that 4.0 can put out.

Same idea .. I would choose the engine and tranny, adapter to a junkyard split case and run the toy axles .. maybe your fab skills are good enought to run coils from the ZJ onto the 40 .. ( I thought should be more less the same weight )

Believe the t-case on the ZJ it's a 231 . ?

[Isotel]

i think your better off selling the jeep whole, and building it with that money..

Although it would be nice to Piss off the Purists with an all jeep FJ40, LOL..

The issue with the jeep suspension is its all week, Brackets are week, Links are week, Steering is Junk, Axles are week, all that stuff will start breaking if you wheel it decently hard on 33's

You could adapt the 4.0 and auto to a Dana 300 and use FJ60 Toyota Axles, or go up to one tons. then just build your suspension to suit.. Leaf springs in the front Sprung over, and some sort of linked rear setup!

[LC_Hamma]

The issue with the jeep suspension is its all week, Brackets are week, Links are week, Steering is Junk, Axles are week, all that stuff will start breaking if you wheel it decently hard on 33's

So very true speaking from someone who's analyzed all the stock brackets closely. I adapted a coil suspension, similar to a TJ, & had the same frame of mind that I could save a bunch of time just swapping out most of the link/ coil brackets onto my 40 axles. After buying all the used brackets all I eventually used was the lower front coil buckets & rear top & bottom coil buckets. Everything else was, as mentioned above, too light of a guage of metal for real world wheelin. Don't even think the short, thin walled, too small dia. link mat'l. & bushings used are adequate either. Happy buildin dude!