O.K. time for another 4.0 swap

[93 x]

ok i have a 86 ranger sas on 35's my tired old 2.9 is just about done. Im still searching for the right explorer but it will definitely be an explorer 91-94. I am an ase certified mechanic i have a full service of any tools i need, lifts and mitchell or alldata. so my main question is will my trans (5 speed) inputshaft work on this motor i know, i will need a 4.0 clutch and flywheel but will my input shaft, with the splines work? Any other tips will be appreciated. I will keep pictures posted soon enough. I hope i can swap everything without cutting and splicing any wiring. Also if anybody needs any specs wiring diagrams or anything let me know i can get them just cause im a nice guy!

 

[jd4242]

Yes the 2.9 bolts up to the 4.0 just fine.that's the combo i was planning on running as it has the lowest first gear out.

 

[snoranger]

Like JD said, yes it will bolt up.

The problem is that the FM145 (IIRC, but it might be a 146) isnt strong enough to last long term behind a 4.0l. It might get you by until you find a M5OD to swap in, but go easy on it.

 

[jd4242]

Like JD said, yes it will bolt up.

The problem is that the FM145 (IIRC, but it might be a 146) isnt strong enough to last long term behind a 4.0l. It might get you by until you find a M5OD to swap in, but go easy on it.

I wonder what FOXRACING is running with his 2.9 because he beats the hell outa his.i decided against the 5speed swap because i just hate wheeling a stick!!

 

[snoranger]

I wonder what FOXRACING is running with his 2.9 because he beats the hell outa his.i decided against the 5speed swap because i just hate wheeling a stick!!

My 2.9l destroyed 8 FM146s between me and the original owner. I swapped in a M5 and never had another problem.

 

[93 x]

So what is the weak link in that fm145 (i do have that one). The trans shop across the street can prob put a newer better whatever breaks all the time part? I just like the low 1st gear.

 

[93 x]

bump?

 

[snoranger]

So what is the weak link in that fm145 (i do have that one). The trans shop across the street can prob put a newer better whatever breaks all the time part? I just like the low 1st gear.

I cant tell you about the 145, but I can tell you about the 146. (which I believe is stronger.)
I broke an input shaft, an output shaft, ripped 4.5 teeth off 2nd gear, snapped the 3rd gear shift fork, and busted the 3-4 shift arm. All behind a 2.9l.

 

[93 x]

I cant tell you about the 145, but I can tell you about the 146. (which I believe is stronger.)
I broke an input shaft, an output shaft, ripped 4.5 teeth off 2nd gear, snapped the 3rd gear shift fork, and busted the 3-4 shift arm. All behind a 2.9l.

damn!! thats nuts the 145 has the trans pan right? so whats the difference on the 146?

 

[snoranger]

damn!! thats nuts the 145 has the trans pan right? so whats the difference on the 146?

IIRC, they both have a pan.

 

[mr cribb]

I wonder what FOXRACING is running with his 2.9 because he beats the hell outa his.i decided against the 5speed swap because i just hate wheeling a stick!!

Last I knew he had a 4.0 w/ a 2.9 5 speed (saw it in person).... unk if it was a 145 or 146 trans. All I know is he beats the piss out of his.