Hi, this is actually my first reply on here. I too have pondered installing a manual transmission on my 1991 hmmw. I still have much research to do, but so far I have read on various forums that a gm transmission will bolt to the engine. I know there will need to be a clutch assembly installed, and I don't know if there would be a need for different master cylinder components. If the switch for the high beam was moved the clutch petal can go there. I have many reasons for wanting to attempt the swap.
1. I prefer manual transmissions.
2. readily adds mores speeds over the current 3 speed auto transmission.
3. would remove the oil cooler, and the auto transmission maintenance.
As far as the differentials are concerned I thought it was the application of the hand brake that helped engage the differentials. if I am wrong I would like to be politely corrected.
If the torque and gearing is matched well then the motor won't stall that easy, esp if you are in 4 low.
so... I hope this was minutely helpful, if I do any further work on my hmmwv in regards to this I will surely start a post about it.
1. I prefer manual transmissions.
2. readily adds mores speeds over the current 3 speed auto transmission.
3. would remove the oil cooler, and the auto transmission maintenance.
As far as the differentials are concerned I thought it was the application of the hand brake that helped engage the differentials. if I am wrong I would like to be politely corrected.
If the torque and gearing is matched well then the motor won't stall that easy, esp if you are in 4 low.
so... I hope this was minutely helpful, if I do any further work on my hmmwv in regards to this I will surely start a post about it.