Am i able to use a different type of trans say a c4 or fmx in my 92 5.0 with smart lock and efi?
My one appears to need a bit of work.
I've got a workshop manual so i was also thinking of giving the current trans a bit of a service and adjust bands etc to see if that clears the problem.
Are these trans easy to work on or are they a bugger?
Looks easy enough in the book but then most stuff looks and sounds easy in them and then it turns into a night mare hahaha

OK so i took it for another drive and it isn't changing past 2nd. if i manually change it wont select 2nd but once its put in 3rd or d its OK but doesn't get 3rd or 4th.
would this be the selector or the solenoids?
i guess either way the box has to come out.
Can i run a c4 or fmx type trans behind my 5.0 with smart lock if this trans is stuffed??

yes, you can fit a c4 or similar..
the trans is controled by the ecu, but has no effect on smartlock ect..

there is a possability you may need a j3 chip to change the ecu into a manual ecu so the auto ecu dont go into limp mode or torque safe mode...

Are the standard trans reasonably easy to work on or is it best left to the pros?
Where would i find parts such as solenoids etc?