87 Ranger won't move help

[Storm1987]

I have an 87 Ranger xlt 4x4 that dies when the clutch is let up in 1st or reverse in 2 hi or 4hi but will move in 4 low but idles rough.

Truck was an automatic but previous owner put in a 5 speed

It's a 2.9 that idles good and revs good

Truck just won't move more than a couple feet with out dieing

Welcoming any ideas and thanks for any help

 

[Storm1987]

Ok as soon as I let up on the clutch the rpms drop and it won't take gas. But if I get the rpms up to around 2000 and let out on the clutch it trys to move but rpms still drop and it dies