CheapXJ Posted January 30, 2019 Share Posted January 30, 2019 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? Link to comment Share on other sites More sharing options...
dasbulliwagen Posted January 31, 2019 Share Posted January 31, 2019 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. Link to comment Share on other sites More sharing options...
mjeff87 Posted January 31, 2019 Share Posted January 31, 2019 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. Link to comment Share on other sites More sharing options...
strictlyxjs Posted February 1, 2019 Share Posted February 1, 2019 Bob salemi from ri runs a tf904 in his drag commanche with the stroker. Link to comment Share on other sites More sharing options...
mnkyboy Posted February 1, 2019 Share Posted February 1, 2019 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. Link to comment Share on other sites More sharing options...
CheapXJ Posted February 3, 2019 Author Share Posted February 3, 2019 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! Link to comment Share on other sites More sharing options...
strictlyxjs Posted February 4, 2019 Share Posted February 4, 2019 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. Link to comment Share on other sites More sharing options...
CheapXJ Posted February 27, 2019 Author Share Posted February 27, 2019 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. Link to comment Share on other sites More sharing options...
mnkyboy Posted February 27, 2019 Share Posted February 27, 2019 That's good to know, I've seen home made brackets but nothing that was being produced. Link to comment Share on other sites More sharing options...
CheapXJ Posted March 1, 2019 Author Share Posted March 1, 2019 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. Link to comment Share on other sites More sharing options...
mnkyboy Posted March 1, 2019 Share Posted March 1, 2019 I found them on Ebay looks easy enough to make, but he's only asking $95 for the kit. Link to comment Share on other sites More sharing options...
IDMJ Posted March 1, 2019 Share Posted March 1, 2019 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. Link to comment Share on other sites More sharing options...
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