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CheapXJ

LS4+TF904?

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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? :beerbang:

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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. 

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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:dunno:

 

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

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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.

 

 

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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!

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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.

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