Lason Posted May 5, 2006 Share Posted May 5, 2006 Got a '73 240Z and Im about to drop a LS1 into it. I just recently decided Im going to go megasquirt on the LS1 instead of the factory crap but that leaves my 4l60E with no computer to run it. Its the weak link anyway so Im thinking about putting a th400 in to take care of that problem but am unsure about if it will fit physically or not. Quote Link to comment Share on other sites More sharing options...
Z-Gad Posted May 5, 2006 Share Posted May 5, 2006 I have the TH400 that is adapted to a 2JZGTE motor. The original bell housing was cut off and adapted to a 2JZGTE bell housing... anyway, the body of the transmission fit fine without any cutting or trimming of the transmission tunnel in my 71 240z ... Mike Quote Link to comment Share on other sites More sharing options...
wheelman Posted May 5, 2006 Share Posted May 5, 2006 Have you thought about uising a 700R4 instead of the TH400? It's basically the same as the 4L60E but without the computer control. Gives you an overdrive tranny without requiring the computer. May I ask why you want to go MegaSquirt rather than using the LS1 PCM? Seems to me it would be much easier to use the factory computer and probably cheaper in the long run as well. Wheelman Quote Link to comment Share on other sites More sharing options...
Lason Posted May 5, 2006 Author Share Posted May 5, 2006 Have you thought about uising a 700R4 instead of the TH400?It's basically the same as the 4L60E but without the computer control. Gives you an overdrive tranny without requiring the computer. May I ask why you want to go MegaSquirt rather than using the LS1 PCM? Seems to me it would be much easier to use the factory computer and probably cheaper in the long run as well. Wheelman I refuse to use a 700r4 because I have blown way too many "built" 700's up behind mild motors. I was going to use the 4l60E only because I had it already but planned on switching over to a th350/400 later on after I grenaded the 4l60E. I decided on megasquirt for 2 reasons. First off it is cheaper. To build the latest version which is the MSII on the 3.0 board will cost me about $250 for the ecm, $40 for the relay board and about $50-80 for wiring. My new harness will be at least 1/4 of the size and complexity of the original. JUST to get the original harness trimmed down and get rid of the emmisions, a/c, gauges, etc etc will cost a minimum of $400 plus another $150-500 to get the ECM reprogrammed with no emmisions. I will then have to get a prgram like HPTuners or EFILive to tune the LS1 from there on out so that will be another 650-900 JUST for the software to do my own programming. Second reason is the stock ECM can only do so much, especially considering I have a '98 ECM/harness. Even with the aftermarket programming I cant run a speed density setup unless I go to a '99+ ECM and harness, which is more $$$. The megasquirt can do all that plus can control nitrous, boost, etc etc. Only problems with MS is as of right now it cant run the coil on plug setup found on the LS1's. I have researched it and will be running a EDIS 36-1 trigger wheel, coils and ignition module found on 4.6 ford motors to overcome that. Other problem as I said before was it cant control the tranny but they also have a add on card to control tranny's coming in a few months. So in short, Im going with MS for simplicity, added features and cost Thanks for the info Zgad, thats at least some relief and congrats on your recent good times in that thing. That thing is FLYING!! Quote Link to comment Share on other sites More sharing options...
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