dragginr35
+1y
Hey guys, just recently acquired an 89 R3500. From all I can tell it is dropped 6"+ in the rear (flip kit) and 4" in the front with a bitchin system.
Question: Looking for a 4spd w/ O/D, did a search and turned up ideas for 4l80e's with a Baumann controller, 700R-4s, or an O/D conversion for the current TH400.
Anyone have any real world numbers of MPG increase or any reason to do a trans swap or any particular reason to leave it alone and just do an O/D mod?