View Full Version : 4.2 -4l swap

04-23-2007, 07:30 AM
want to swap a 4l to replace a 4.2.will the 4l bell housing bolt up to the 4.2 tranny? 5spd (crank trigger)just because the 4.2 is hooped and i have a good 4l layin around

Jeep Victim
04-23-2007, 08:10 AM
Yep did it this winter,keep your 4.2 crank and throw it in the 4.0

04-23-2007, 08:25 AM
If you are workin on a YJ the bell housing for the 4.2 should have the spot for the TDC sensor if it is a CJ the 4.0 bell housing will not fit any of the trannys that the CJ came with and the CJ bell housings will not have the spot for the TDC sensor you will have to customize your CJ bell housing

04-24-2007, 04:43 AM
tanks for the info