LS4+TF904?

[CheapXJ]

although nothing special, I've had good experience with the tf904 (behind early 2.5/2.8 in XJs and MJs)

 

there were adapters available to mate it to a SBC.

 

ls4 is a modern 5.3L chevy LS v8 with a 60 degree bolt pattern that will bolt up to this trans...

 

 

anyone know how much boost the 904 can handle yet?

[dasbulliwagen]

The 904 is a light duty version of the TF727. go to www.allpar.com and search that trans and youll get a to of articles about history and performance mods. 

[mjeff87]

My buddy had a 904 behind a 2.5 in a YJ and he grenaded it.......we ended up swapping in an AX5 and a clutch pedal.  Not sure why the 904 died, though.  I'd be a bit concerned putting it behind an LS

 

Take that for what it's worth though, I'm not an auto trans guy.  Voodoo boxes, I call them.

[strictlyxjs]

Bob salemi from ri runs a tf904 in his drag commanche with the stroker.

[mnkyboy]

Something to consider, although the LS4 will bolt up to the bell housing it does not have any starter provisions.

 

The LS4 was designed to use a bellhousing mounted starter,  2.5l/2.8l Jeeps use a block mounted starter so fabrication and some creativity will be necessary to mount a starter on it,  this is a big reason that you don't see a lot of LS4 swaps.

 

 

[CheapXJ]

On 1/31/2019 at 9:37 PM, strictlyxjs said:

Bob salemi from ri runs a tf904 in his drag commanche with the stroker.

 

Now there's a name I haven't heard in years!

 

Glad the drag comanche is still kickin!

[strictlyxjs]

23 hours ago, CheapXJ said:

 

Now there's a name I haven't heard in years!

 

Glad the drag comanche is still kickin!

Yea bob is still fixin up old xjs and selling then on the side as a hobby/extra income. He comes by our shop now and again for parts.

[CheapXJ]

On 2/1/2019 at 8:09 AM, mnkyboy said:

Something to consider, although the LS4 will bolt up to the bell housing it does not have any starter provisions.

 

The LS4 was designed to use a bellhousing mounted starter,  2.5l/2.8l Jeeps use a block mounted starter so fabrication and some creativity will be necessary to mount a starter on it,  this is a big reason that you don't see a lot of LS4 swaps.

 

 

the fiero guys made a bracket to swap the LS4 stock starter to pretty much anything and you make a 3"x3" square hole in your bellhousing where the bracket bolts on.

[mnkyboy]

That's good to know, I've seen home made brackets but nothing that was being produced.

[CheapXJ]

i guess it's semi homemade... random dude on a fiero forum is making and selling them.

 

design is simple and can be cloned fairly easily.

[mnkyboy]

I found them on Ebay looks easy enough to make, but he's only asking $95 for the kit.

 

 

[IDMJ]

I’m running a 904 behind a Cadillac shortstar in my crawler. Running a reverse manual valvebody. Haven’t had any problems with it. Wonder if you could come up with a starter that would mount on the bellhousing. Mine has the caddy starter with notched bellhousing.